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Multicast
Chapter
13
In this chapter
•
•
•
IGMP
The multicast feature allows packets to be simultaneously transmitted to a selected set of destinations, such one or more multicast groups. Refer to the configuration guide for a product for details on the features discussed in this chapter.
The Internet Group Membership Protocol (IGMP) allows Layer 3 Switches to limit the multicast of
IGMP packets to only those ports on the Layer 3 Switch that are identified as IP Multicast members. Devices support IGMP versions 1 and 2. The Layer 3 Switch actively sends out host queries to identify IP Multicast groups on the network, inserts the group information in an IGMP packet, and forwards the packet to IP Multicast neighbors.
Objects for IGMP are presented in the following sections:
•
“General IGMP objects” on page 164
•
“IGMP interface table” on page 164
•
“IGMP static group MIB table” on page 165
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IGMP
General IGMP objects
The following general IGMP objects are available in all devices.
Object Name and Number snIgmpQueryInterval brcdIp.1.2.6.1.1
Syntax: Integer snIgmpGroupMembershipTime brcdIp.1.2.6.1.2
Syntax: Integer
Access Description
Read-write
Specifies how often the
Layer 3 Switch sends out IGMP host query packets to query an interface for group membership.
Valid values: 1 – 3600 seconds.
Default: 60 seconds
For a Layer 3 Switch, the object
must have been set to “enabled(1)” before this object can be written.
For a Layer 2 Switch, the object
must have been set to “enabled(1)” and the object
must have been set to “querier(1)” before this object can be written.
Read-write Specifies how many seconds an IP Multicast group can remain on a Layer 3 Switch interface in the absence of a group report.
Valid values: 1 – 7200 seconds.
Default: 60 seconds
For a Layer 3 Switch, the object
must have been set to “enabled(1)” before this object can be written.
For a Layer 2 Switch, the object
must have been set to “enabled(1)” before this object can be written.
IGMP interface table
The IGMP Interface Table contains the group membership information of a port.
Object Name and Number Access snIgmpIfTable brcdIp.1.2.6.1.3
snIgmpIfEntry brcdIp.1.2.6.1.3.1
snIgmpIfEntryIndex brcdIp.1.2.6.1.3.1.1
Syntax: Integer32 snIgmpIfPortNumber brcdIp.1.2.6.1.3.1.2
Syntax: Integer32 snIgmpIfGroupAddress brcdIp.1.2.6.1.3.1.3
Syntax: IpAddress snIgmpIfGroupAge brcdIp.1.2.6.1.3.1.4
Syntax: Integer32
None
None
Read only
Read only
Read only
Read only
Description
The IGMP Interface Table.
An entry in the IGMP Interface Table.
The table entry index.
Shows the port number (interface) on which the group was learned.
Shows the group’s IP address learned from the interface.
Specifies how many seconds the Layer 3 Switch will wait for an IGMP response from an interface before concluding that the group member on that interface is down. The switch will then begin to remove the interface from the group.
Valid values: 1 – 10 seconds
Default: 5 seconds
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IGMP static group MIB table
The table contains a list of IGMP static group entries. This table is available when IP Multicast
Traffic Reduction is enabled on a Layer 2 Switch. The snSwGroupIpMcastMode MIB object enables or disables IP Multicast using SNMP.
By default, Layer 2 Switches forward all IP multicast traffic out of all ports except the port on which the traffic was received. To reduce multicast traffic through the Layer 2 Switch, you can enable IP
Multicast Traffic Reduction. This feature configures the Layer 2 Switch to forward multicast traffic only on the ports attached to multicast group members. The Layer 2 Switch determines the ports that are attached to multicast group members based on entries in the IGMP table. Each entry in the table consists of an IP multicast group address and the Layer 2 Switch ports from which the
Layer 2 Switch has received Group Membership reports for that group.
After you enable IP Multicast Traffic Reduction, when the Layer 2 Switch receives traffic for an IP multicast group, the Layer 2 Switch looks in the IGMP table for an entry for that group. If the Layer
2 Switch finds an entry, the Layer 2 Switch forwards the group traffic out the ports listed in the group entry. If the table does not contain an entry for the group, the Layer 2 Switch broadcasts the traffic.
The IGMP table is populated by receipt of Group Membership messages from IP multicast group members. Each Group Membership message contains the member’s IP address and the group address.
Access
None
Description
The IGMP Static Group Table
Name, OID, and Syntax snIgmpStaticGroupTable brcdIp.1.2.6.1.4
snIgmpStaticGroupEntry brcdIp.1.2.6.1.4.1 snIgmpStaticGroupIfIndex brcdIp.1.2.6.1.4.1.1
Syntax: Integer snIgmpStaticGroupAddress brcdIp.1.2.6.1.4.1.2
Syntax: IpAddress snIgmpStaticGroupPortList brcdIp.1.2.6.1.4.1.3
Syntax: OctetString snIgmpStaticGroupRowStatus brcdIp.1.2.6.1.4.1.4
Syntax: Integer
None
Read only
Read only
An entry in the IGMP static group. Each entry contains membership information.
Shows the interface for which the group was configured.
Shows the IP address for the group.
Read-write Contains a list of ports that are members of the static group. Each port contains a 16-bit integer ifIndex.
Read-write Controls the management of the table rows. The values that can be written are:
• delete(3) – Delete the row
• create(4) – Create a new row
• modify(5) – Modify an existing row
If the row exists, then a SET with a value of create(4) returns a
"bad value" error. Deleted rows are removed from the table immediately.
The following values can be returned on reads:
• other(1) – Row is inoperative
• valid(2) – Row exists and is valid
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PIM
PIM
The sections below describe the SNMP support for Protocol-Independent Multicast (PIM).
The products listed below support RFC 2934, except for pimIpMRouteTable, pimIpMRouteNextHopTable, and pimComponentTable.
The products listed above also support the proprietary scalar MIBs discussed in the section
“Common PIM objects” on page 166
.
SNMP support for PIM on other products are discussed in the following sections:
•
“PIM virtual interface table” on page 167
•
“PIM neighbor table” on page 168
•
“PIM virtual interface statistics table” on page 169
•
Common PIM objects
The following table presents objects that are common to all PIM interfaces.
Name, OID, and Syntax Access Description snPimEnable brcdIp.1.2.9.1.1
Syntax: Integer snPimNeighborRouterTimeout brcdIp.1.2.9.1.2
Syntax: Integer snPimHelloTime brcdIp.1.2.9.1.3
Syntax: Integer snPimPruneTime brcdIp.1.2.9.1.4
Syntax: Integer
Read-write Determines if PIM is enabled on this Layer 3 Switch:
• disabled(0)
• enabled(1)
Default: disabled(0)
The remaining object applies only if this object is set to enabled(1).
Read-write Specifies the number of seconds the PIM Layer 3 Switch waits before it considers a neighbor to be absent. Absence of PIM hello messages from a neighboring Layer 3 Switch indicates that a neighbor is not present.
Valid values: 60 – 8000 seconds
Default: 180 seconds
Read-write Specifies the number of seconds that periodic hellos are sent out on PIM interfaces. Layer 3 Switches use hello messages to inform neighboring Layer 3 Switches of their presence.
Valid values: 10 – 3600 seconds
Default: 60 seconds
Read-write Specifies the number of seconds that a PIM Layer 3 Switch will maintain a prune state for a forwarding entry.
The first multicast that the Layer 3 Switch receives from an interface is forwarded to all other PIM interfaces on the Layer 3
Switch. If there is no presence of groups on that interface, the leaf node sends a prune message upstream and stores a prune state.
This prune state travels up the tree and installs a prune state.
A prune state is maintained until the prune timer expires or a graft message is received for the forwarding entry.
Valid values: 10 – 3600 seconds
Default: 180 seconds
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Name, OID, and Syntax snPimGraftRetransmitTime brcdIp.1.2.9.1.5
Syntax: Integer snPimInactivityTime brcdIp.1.2.9.1.6
Syntax: Integer
Access Description
Read-write Defines the number of seconds between the transmission of graft messages.
A graft message is sent by a Layer 3 Switch to cancel a prune state.
When a Layer 3 Switch receives a graft message, the Layer 3
Switch responds with a Graft ACK (acknowledge) message. If this
Graft ACK message is lost, the Layer 3 Switch that sent the graft message will resend it.
Valid values: 10 – 3600 seconds
Default: 180 seconds
Read-write Defines how long a forwarding entry can remain unused before the
Layer 3 Switch deletes it. The Layer 3 Switch deletes a forwarding entry if the entry is not used to send multicast packets.
This object is used only to keep the forwarding entries for the active sessions.
Valid values: 10 – 3600 seconds
Default: 180 seconds
PIM virtual interface table
The PIM Virtual Interface Table lists the PIM virtual interfaces on a Layer 3 Switch.
Name, OID, and Syntax Access Description snPimVInterfaceTable brcdIp.1.2.9.1.7
snPimVInterfaceEntry brcdIp.1.2.9.1.7.1
snPimVInterfaceVifIndex brcdIp.1.2.9.1.7.1.1
Syntax: Integer snPimVInterfaceType brcdIp.1.2.9.1.7.1.2
Syntax: Integer snPimVInterfaceLocalAddr ess brcdIp.1.2.9.1.7.1.3
Syntax: IpAddress snPimVInterfaceLocalSub netMask brcdIp.1.2.9.1.7.1.4
Syntax: IpAddress snPimVInterfaceRemoteAd dress brcdIp.1.2.9.1.7.1.5
Syntax: IpAddress snPimVInterfaceDR brcdIp.1.2.9.1.7.1.6
Syntax: IpAddress
None
None
The PIM Virtual Interface Table.
An entry in the PIM Virtual Interface Table.
Read only The ifIndex value of this PIM virtual interface. There can be up to 48 entries.
Read-write Indicates the type of PIM virtual interface the row represents:
• tunnel(1)
• subnet(2) or a physical interface
Read-write Indicates the IP address of the local end of the interface being configured.
IP tunneling must also be enabled and defined on the destination Layer
3 Switch interface as well.
Read only Shows the network mask for the IP address of the PIM virtual interface.
For a tunnel, this should be 0.0.0.0.
Read-write Shows the IP address of the remote end of this PIM virtual interface.
Read only Defines the designated Layer 3 Switch on this PIM virtual interface. For point-to-point interfaces, this object has the value 0.0.0.0.
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PIM
Name, OID, and Syntax snPimVInterfaceTtlThresh old brcdIp.1.2.9.1.7.1.7
Syntax: Integer snPimVInterfaceStatus brcdIp.1.2.9.1.7.1.8
Syntax: Integer snPimVInterfaceMode brcdIp.1.2.9.1.7.1.9
Syntax: Integer
Access Description
Read-write Determines the minimum time-to-live value to forward the packets out of this interface.
Valid values: 1 – 31
Default: 1
Read-write Controls the management of the table rows. The values that can be written are:
• delete(3) – Delete the row
• create(4) – Create a new row
• modify(5) – Modify an existing row
If the row exists, then a SET with a value of create(4) returns a “bad value” error. Deleted rows are removed from the table immediately.
The following values can be returned on reads:
• noSuch(0) – No such row
• invalid(1) – Row is inoperative
• valid(2) – Row exists and is valid
Read-write Shows the configured mode of this PIM interface:
• dense(1) – Traffic is initially flooded to all PIM interface neighbors.
Branches that do not want the data are pruned.
• sparse(2) – PIM interface neighbors must join the multicast group if they want to receive the traffic.
PIM neighbor table
The PIM Neighbor Table is a conceptual table that lists the Layer 3 Switch’s PIM neighbors.
Name, OID, and Syntax snPimNeighborTable brcdIp.1.2.9.1.8
snPimNeighborEntry brcdIp.1.2.9.1.8.1
snPimNeighborEntryIndex brcdIp.1.2.9.1.8.1.1
Syntax: Integer32 snPimNeighborVifIndex brcdIp.1.2.9.1.8.1.2
Syntax: Integer32 snPimNeighborAddress brcdIp.1.2.9.1.8.1.3
Syntax: IpAddress snPimNeighborUpTime brcdIp.1.2.9.1.8.1.4
Syntax: Time ticks snPimNeighborExpiryTime brcdIp.1.2.9.1.8.1.5
Syntax: Time ticks
Access
None
None
Description
The PIM Neighbor Table
An entry in the PIM Neighbor Table
Read only The table entry index.
Read only Shows the value of VifIndex for the virtual interface used to reach this
PIM neighbor.
Read only Shows the IP address of the this PIM neighbor.
Read only Indicates the last time when this PIM neighbor became a neighbor of the local Layer 3 Switch.
Read only Displays the time remaining before this PIM neighbor will be aged out.
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PIM virtual interface statistics table
The PIM Virtual Interface Statistics table lists the Layer 3 Switch’s PIM virtual interface statistical counters.
Name, OID, and Syntax Access Description snPimVIfStatTable brcdIp.1.2.9.1.9
snPimVIfStatEntry brcdIp.1.2.9.1.9.1
snPimVIfStatVifIndex brcdIp.1.2.9.1.9.1.1
Syntax: Integer snPimVIfStatInJoinPkts brcdIp.1.2.9.1.9.1.2
Syntax: Counter32
None
None
Read only
The PIM Virtual Interface Statistics Table.
An entry in the PIM Virtual Interface Statistics Table.
The ifIndex value of this PIM virtual interface. There can be up – 32 entries. snPimVIfStatOutJoinPkts brcdIp.1.2.9.1.9.1.3
Syntax: Counter32 snPimVIfStatDiscardJoinPkts brcdIp.1.2.9.1.9.1.4
Syntax: Counter32 snPimVIfStatInPrunePkts brcdIp.1.2.9.1.9.1.5
Syntax: Counter32 snPimVIfStatOutPrunePkts brcdIp.1.2.9.1.9.1.6
Syntax: Counter32 snPimVIfStatDiscardPrunePkts brcdIp.1.2.9.1.9.1.7
Syntax: Counter32 snPimVIfStatInAssertPkts brcdIp.1.2.9.1.9.1.8
Syntax: Counter32 snPimVIfStatOutAssertPkts brcdIp.1.2.9.1.9.1.9
Syntax: Counter32 snPimVIfStatDiscardAssertPkts brcdIp.1.2.9.1.9.1.10
Syntax: Counter32 snPimVIfStatInHelloPkts brcdIp.1.2.9.1.9.1.11
Syntax: Counter32 snPimVIfStatOutHelloPkts brcdIp.1.2.9.1.9.1.12
Syntax: Counter32
Read only Shows the number of Join/Prune messages sent or received on the interface.
NOTE: Unlike PIM dense, PIM Sparse uses the same messages for
Joins and Prunes.
Read only Indicates the number of join packets that have been sent on the
PIM virtual interface.
Read only Shows the number of join packets that have been discarded by the
PIM virtual interface.
Read only Shows the number of prune packets that have arrived on the PIM virtual interface.
Read only Shows the number of prune packets that have been sent on the
PIM virtual interface.
Read only Shows the number of prune packets that have been discarded by the PIM virtual interface.
Read only Shows the number of assert packets that have arrived on the PIM virtual interface.
Read only Shows the number of assert packets that have been sent on the
PIM virtual interface.
Read only Shows the number of assert packets that have been discarded by the PIM virtual interface.
Read only Shows the number of hello packets that have arrived on the PIM virtual interface.
Read only Shows the number of hello packets that have been sent on the PIM virtual interface.
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PIM
Name, OID, and Syntax snPimVIfStatDiscardHelloPkts brcdIp.1.2.9.1.9.1.13
Syntax: Counter32 snPimVIfStatInGraftPkts brcdIp.1.2.9.1.9.1.14
Syntax: Counter32 snPimVIfStatOutGraftPkts brcdIp.1.2.9.1.9.1.15
Syntax: Counter32 snPimVIfStatDiscardGraftPkts brcdIp.1.2.9.1.9.1.16
Syntax: Counter32 snPimVIfStatInGraftAckPkts brcdIp.1.2.9.1.9.1.17
Syntax: Counter32 snPimVIfStatOutGraftAckPkts brcdIp.1.2.9.1.9.1.18
Syntax: Counter32 snPimVIfStatDiscardGraftAckP kts brcdIp.1.2.9.1.9.1.19
Syntax: Counterv32
Access Description
Read only Shows the number of hello packets that have been discarded by the PIM virtual interface.
Read only Shows the number of graft packets that have arrived on the PIM virtual interface.
Read only Shows the number of graft packets that have been sent on the PIM virtual interface.
Read only Shows the number of graft packets that have been discarded by the PIM virtual interface.
Read only Shows the number of graft acknowledge packets that have arrived on the PIM virtual interface.
Read only Shows the number of graft acknowledge packets that have been sent on the PIM virtual interface.
Read only Shows the number of graft acknowledge packets that have been discarded by the PIM virtual interface.
PIM-SM
The following tables are available for the PIM Sparse feature.
•
“PIM sparse: candidate BSR table” on page 170
•
“PIM RP set table” on page 171
•
“PIM RP candidate table” on page 172
Name, OID, and Syntax snPimJoinPruneInterval brcdIp.1.2.9.2.1
Syntax: Integer
Access Description
Read-write Determines the number of seconds when periodic PIM Spare
Join/Prune messages are to be sent. These messages inform other PIM
Sparse Layer 3 Switches about clients who want to become receivers
(Join) or stop being receivers (Prune) for PIM Sparse groups.
Valid values: 10 – 3600 seconds
Default: 60 seconds
PIM sparse: candidate BSR table
The Candidate Bootstrap Router (BSR) Table contains information about BSRs that can are candidates to be the active BSR for the domain. The Bootstrap Router (BSR) distributes
Rendezvous Point (RP) information to the other PIM Sparse routers within the domain. Each PIM
Sparse domain has one active BSR. For redundancy, you can configure ports on multiple routers as candidate BSRs. The PIM Sparse protocol uses an election process to select one of the candidate
BSRs as the active BSR for the domain. The BSR with the highest BSR priority is elected. If the priorities result in a tie, then the candidate BSR interface with the highest IP address is elected.
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Name, OID, and Syntax snPimCandidateBSRTable brcdIp.1.2.9.2.2
snPimCandidateBSREntry brcdIp.1.2.9.2.2.1
snPimCandidateBSRPortID brcdIp.1.2.9.2.2.1.1
Syntax: Integer32 snPimCandidateBSRIPAddress brcdIp.1.2.9.2.2.1.2
Syntax: IpAddress snPimCandidateBSRHashMaskLen brcdIp.1.2.9.2.2.1.3
Syntax: Integer snPimCandidateBSRPreference brcdIp.1.2.9.2.2.1.4
Syntax: Integer
Access
None
None
Description
The Candidate Bootstrap Router Table.
An entry in the Candidate Bootstrap Router Table.
Read-write Identifies the IP address of the PIM interface:
•
Bit 0 to bit 7 – Port number.
•
Bit 8 to bit 11– Slot number.
Read only Shows the unicast address of the candidate BSR.
Valid values: 1 – 32.
Read-write Indicates the hash mask value for this Layer 3 Switch as a candidate bootstrap router.
Read-write Indicates the preference value for this Layer 3 Switch as a candidate bootstrap router.
Valid values: 0 – 255
Default: 100
PIM RP set table
The PIM RP Set Table contains information about candidate Rendezvous Points (RPs) for IP multicast groups. When the local Layer 3 Switch is the BSR, this information is obtained from the advertisements received from the Candidate-RP. When the local Layer 3 Switch is not the BSR, this information is obtained from the received RP-Set messages.
Name, OID, and Syntax snPimRPSetTable brcdIp.1.2.9.2.3
snPimRPSetEntry brcdIp.1.2.9.2.3.1
snPimRPSetGroupAddress brcdIp.1.2.9.2.3.1.1
Syntax: IpAddress snPimRPSetMask brcdIp.1.2.9.2.3.1.2
Syntax: IpAddress snPimRPSetIPAddress brcdIp.1.2.9.2.3.1.3
Syntax: IpAddress snPimRPSetHoldTime brcdIp.1.2.9.2.3.1.4
Syntax: Integer
Access
None
None
Description
The PIM RP Set Table
An entry in the PIM RP Set Table
Read only Shows the IP multicast group address. This object plus the snPimRPSetGroupMask, form the group prefix for the Candidate-RP.
Read only Shows the IP multicast group address. This object plus the
object form the group prefix for the
Candidate-RP.
Read only Shows the IP address of the Candidate-RP.
Read only Shows the holdtime, in seconds, of a Candidate-RP. If the local router is not the BSR, this value is 0.
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DVMRP
PIM RP candidate table
The PIM Rendezvous Point Table listing the IP multicast groups for which the local router is to advertise itself as a Candidate-RP. If this table is empty, then the local router will advertise itself as a Candidate-RP for all groups snPimEnable must be "enabled" before this table is read or written.
Name, OID, and Syntax snPimCandidateRPTable brcdIp.1.2.9.2.4
snPimCandidateRPEntry brcdIp.1.2.9.2.4.1
snPimCandidateRPGroupAddress brcdIp.1.2.9.2.4.1.1
Syntax: IpAddress snPimCandidateRPMask brcdIp.1.2.9.2.4.1.2
Syntax: IpAddress snPimCandidateRPIPAddress brcdIp.1.2.9.2.4.1.3
Syntax: IpAddress snPimCandidateRPRowStatus brcdIp.1.2.9.2.4.1.4
Syntax: Integer
Access
None
None
Description
The PIM RP Candidate Table
An entry the PIM RP Candidate Table
Read only Shows the IP multicast group address. This object combined with the snPimCandidateRPGroupMask object forms the group prefix for which the local router will advertise itself as a Candidate-RP.
Read only Shows the multicast group address mask. This object combined with snPimCandidateRPGroupMask forms the group prefix for which the local router will advertise itself as a Candidate-RP.
Read-write Indicates the unicast IP address of the interface that will be advertised as a Candidate-RP.
Read-write Controls the management of the table rows. The values that can be written are:
• delete(3) – Delete the row
• create(4) – Create a new row
• modify(5) – Modify an existing row
If the row exists, then a SET with a value of create(4) returns a
"bad value" error. Deleted rows are removed from the table immediately.
The following values can be returned on reads:
• noSuch(0) – No such row
• invalid(1) – Row is inoperative
• valid(2) – Row exists and is valid
DVMRP
172
Distance Vector Multicast Routing Protocol (DVMRP) is one of the multicast routing protocol supported in Layer 3 Switches.
The objects in this section apply to the DVMRP feature, if that feature is enabled in the Layer 3
Switch. For additional information on DVMRP, refer to the configuration guide for a product.
The following sections present the objects and tables for configuring DVMRP:
•
“Global DVMRP objects” on page 173
•
“DVMRP virtual interface table” on page 174
•
“DVMRP neighbor table” on page 175
•
“DVMRP route table” on page 176
•
“DVMRP routing next hop table” on page 177
•
“DVMRP virtual interface statistics table” on page 178
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Global DVMRP objects
Name, OID, and Syntax snDvmrpVersion brcdIp.1.2.5.1.1
Syntax: DisplayString snDvmrpEnable brcdIp.1.2.5.1.2
Syntax: Integer snDvmrpGenerationId brcdIp.1.2.5.1.3
Syntax: Integer32 snDvmrpProbeInterval brcdIp.1.2.5.1.4
Syntax: Integer snDvmrpReportInterval brcdIp.1.2.5.1.5
Syntax: Integer snDvmrpTriggerInterval brcdIp.1.2.5.1.6
Syntax: Integer snDvmrpNeighborRouterTi meout brcdIp.1.2.5.1.7
Syntax: Integer snDvmrpRouteExpireTime brcdIp.1.2.5.1.8
Syntax: Integer snDvmrpRouteDiscardTim e brcdIp.1.2.5.1.9
Syntax: Integer snDvmrpPruneAge brcdIp.1.2.5.1.10
Syntax: Integer
Access
Read only
Description
Shows the DVMRP version in the Layer 3 Switch. There can be up to
255 characters in this object.
Read-write Indicates if DVMRP is enabled on this Layer 3 Switch:
• disabled(0)
• enabled(1)
Default: disabled(0)
Read only Shows the generation identifier for the routing process. This is used by neighboring Layer 3 Switches to determine if pruning information should be resent.
Read-write Defines how often neighbor probe messages are sent to the
ALL-DVMRP-ROUTERS IP multicast group address. A Layer 3 Switch’s probe message lists those neighbor DVMRP routers from which it has received probes.
Valid values: 5 – 30 seconds
Default: 10 seconds
Read-write Defines how often Layer 3 Switches propagate their complete routing tables to other DVMRP neighbor routers.
Valid values: 10 –2000 seconds
Default: 60 seconds
Read-write Defines how often trigger updates, which reflect changes in the network topology, are sent. For example, changes in a network topology, including router up or down, or changes in the metric, would cause trigger updates to be sent.
Valid values: 5 –30 seconds
Default: 5 seconds
Read-write Specifies the how long a router waits before it determines that an attached DVMRP neighbor router as down.
Valid values: 40 – 8000 seconds
Default: 180 seconds
Read-write Defines how long a route is considered valid in the absence of the next route update.
Valid values: 20 – 4000 seconds
Default: 200 seconds
Read-write Defines how long a router waits before it deletes a route.
Valid values: 40 – 8000 seconds
Default: 340 seconds
Read-write Defines how long a prune state will remain in effect for a source-routed multicast tree. After the prune age period expires, flooding will resume.
Valid values: 20 – 3600 seconds
Default: 180 seconds
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DVMRP
Name, OID, and Syntax Access Description snDvmrpGraftRetransmitTi me brcdIp.1.2.5.1.11
Syntax: Integer snDvmrpDefaultRoute brcdIp.1.2.5.1.12
Syntax: IpAddress
Read-write Defines how long a router that is sending a graft message will wait for a the first graft acknowledgement from an upstream router before re-transmitting that message. Subsequent retransmissions are sent at an interval twice that of the preceding interval.
Valid values: 5 – 3600 seconds
Default: 10 seconds
Read-write This is the IP address of a router that is connected to one of the directly attached subnet. If a multicast route is not present on the local router, this default route will be used for multicast forwarding.
must be set to “enabled” before this object can be written.
DVMRP virtual interface table
The DVMRP Virtual Interface Table contains the router’s DVMRP virtual interfaces.
Name, OID, and Syntax Access Description snDvmrpVInterfaceTable brcdIp.1.2.5.1.13
snDvmrpVInterfaceEntry brcdIp.1.2.5.1.13.1
None The DVMRP Virtual Interface Table
None An entry in the The DVMRP Virtual Interface Table.
This row augments ipMRouteInterfaceEntry in the IP Multicast
MIB, where the threshold object resides.
Read only The ifIndex value of this DVMRP virtual interface. snDvmrpVInterfaceVifIndex brcdIp.1.2.5.1.13.1.1
Syntax: Integer snDvmrpVInterfaceType brcdIp.1.2.5.1.13.1.2
Syntax: Integer snDvmrpVInterfaceOperState brcdIp.1.2.5.1.13.1.3
Syntax: Integer snDvmrpVInterfaceLocalAddress brcdIp.1.2.5.1.13.1.4
Syntax: IpAddress snDvmrpVInterfaceRemoteAddress brcdIp.1.2.5.1.13.1.5
Syntax: IpAddress snDvmrpVInterfaceRemoteSubnet
Mask brcdIp.1.2.5.1.13.1.6
Syntax: IpAddress
Read-write Indicates the type of this DVMRP virtual interface:
• tunnel(1) – Tunnel interface, for which the interface is a querier.
• subnet(3) – Physical interface, for which the interface is not a querier.
Read only
Read-write
Shows the current state of this DVMRP virtual interface:
•
• up(1) down(2)
Shows the IP address of the local end of this DVMRP virtual interface.
Read-write Shows the IP address of the remote end of this DVMRP virtual interface.
For a tunnel, enter the IP address of the neighboring router.
For a subnet, enter the subnet address.
Read only Shows the subnet mask for a directly connected subnet. For a tunnel, this should be 0.0.0.0.
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Name, OID, and Syntax snDvmrpVInterfaceMetric brcdIp.1.2.5.1.13.1.7
Syntax: Integer snDvmrpVInterfaceTtlThreshold brcdIp.1.2.5.1.13.1.8
Syntax: Integer snDvmrpVInterfaceAdvertiseLocal brcdIp.1.2.5.1.13.1.9
Syntax: Integer snDvmrpVInterfaceEncapsulation brcdIp.1.2.5.1.13.1.10
Syntax: Integer snDvmrpVInterfaceStatus brcdIp.1.2.5.1.13.1.11
Syntax: Integer
Access Description
Read-write Defines the distance metric for this DVMRP virtual interface.
The router uses the metric when establishing reverse paths to some networks on directly attached interfaces.
Valid values: 1 – 31 hops
Default: 1
Read-write Defines the minimum value required in a packet in order for the packet to be forwarded out of the interface. For example, if the TTL for an interface is set at 10, then only those packets with a TTL value of 10 or more are forwarded. Likewise, if an interface is configured with a TTL Threshold value of 1, all packets received on that interface are forwarded.
Valid values: 1 – 64
Default: 1
Read-write Determines if advertising of this local route is enabled:
• disabled(0)
• enabled(1)
Default: enabled(1)
Read-write Indicates if the encapsulation of the DVMRP control packets when using IPINIP encapsulation is enabled:
• disabled(0)
• enabled(1)
Default: disabled(0)
Read-write Controls the management of the table rows. The values that can be written are:
• delete(3) – Delete the row
• create(4) – Create a new row
• modify(5) – Modify an existing row
If the row exists, then a SET with a value of create(4) returns a
"bad value" error. Deleted rows are removed from the table immediately.
The following values can be returned on reads:
• noSuch(0) – No such row
• invalid(1) – Row is inoperative
• valid(2) – Row exists and is valid
DVMRP neighbor table
The DVMRP Neighbor Table lists the router’s DVMRP neighbors, as discovered by the receiving
Neighbor Probe messages.
Name, OID, and Syntax snDvmrpNeighborTable brcdIp.1.2.5.1.14
snDvmrpNeighborEntry brcdIp.1.2.5.1.14.1
snDvmrpNeighborEntryIndex brcdIp.1.2.5.1.14.1.1
Syntax: Integer32
Access
None
None
Description
The DVMRP Neighbor Table.
An entry in the DVMRP Neighbor Table.
Read only The table entry index.
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Name, OID, and Syntax snDvmrpNeighborVifIndex brcdIp.1.2.5.1.14.1.2
Syntax: Integer32 snDvmrpNeighborAddress brcdIp.1.2.5.1.14.1.3
Syntax: IpAddress snDvmrpNeighborUpTime brcdIp.1.2.5.1.14.1.4
Syntax: Time ticks snDvmrpNeighborExpiryTime brcdIp.1.2.5.1.14.1.5
Syntax: Time ticks snDvmrpNeighborGenerationId brcdIp.1.2.5.1.14.1.6
Syntax: Integer32 snDvmrpNeighborMajorVersion brcdIp.1.2.5.1.14.1.7
Syntax: Integer snDvmrpNeighborMinorVersion brcdIp.1.2.5.1.14.1.8
Syntax: Integer snDvmrpNeighborCapabilities brcdIp.1.2.5.1.14.1.9
Syntax: Integer32
Access Description
Read only The value of VifIndex for the virtual interface used to reach this
DVMRP neighbor.
Read only Shows the IP address of the DVMRP neighbor for which this entry contains information.
Read only Shows the last time since this DVMRP neighbor became a neighbor of the local router.
Read only Shows the number of seconds remaining before this DVMRP neighbor will be aged out.
Read only Shows the neighboring router’s generation identifier.
Read only Shows the neighboring router’s major DVMRP version number.
Valid values: 0 – 255
Read only Shows the neighboring router’s minor DVMRP version number.
Valid values: 0 – 255
Read only Describes the neighboring router’s capabilities. The following shows the position of each bit:
Bit position and Meaning
3: trace bit. If on, neighbor can handle mtrace requests
2: generationID bit. If on, the neighbor sends its generationID in Probe messages
1: prune bit. If on, the neighbor supports pruning
0: leaf bit. If on, the neighbor has only one interface with other neighbors
DVMRP route table
DVMRP uses a routing table instead of the unicast routing table. The DVMRP Route Table contains information on the DVMRP source and destination routes.
Name, OID, and Syntax snDvmrpRouteTable brcdIp.1.2.5.1.15
snDvmrpRouteEntry brcdIp.1.2.5.1.15.1
snDvmrpRouteEntryIndex brcdIp.1.2.5.1.15.1.1
Syntax: Integer32 snDvmrpRouteSource brcdIp.1.2.5.1.15.1.2
Syntax: IpAddress
Access
None
None
Description
The DVMRP Route Table
An entry in the DVMRP Route Table
Read only The table entry index.
Read only Shows the network address of the source. This object plus the
value of the “snDvmrpRouteSourceMask” object identifies the
sources of this entry.
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Name, OID, and Syntax snDvmrpRouteSourceMask brcdIp.1.2.5.1.15.1.3
Syntax: IpAddress snDvmrpRouteUpstreamNeighbor brcdIp.1.2.5.1.15.1.4
Syntax: IpAddress snDvmrpRouteVifIndex brcdIp.1.2.5.1.15.1.5
Syntax: Integer32 snDvmrpRouteMetric brcdIp.1.2.5.1.15.1.6
Syntax: Integer32 snDvmrpRouteExpiryTime brcdIp.1.2.5.1.15.1.7
Syntax: Time ticks
Access Description
Read only Shows the network mask of the source. This object plus the value
object identifies the sources of this entry.
Read only Shows the address of the upstream neighbor (for example, RPF neighbor) from which IP datagrams were received.
Read only The value of snDvmrpVInterfaceVifIndex for the virtual interface on which IP datagrams sent by these sources are received.
Read only Shows the number of hops to the source subnet.
Read only Shows the amount of time remaining before this entry will be aged out.
DVMRP routing next hop table
The DVMRP Routing Next Hop Table contains information on the next hop for routing IP multicast datagrams.
Name, OID, and Syntax snDvmrpRouteNextHopTable brcdIp.1.2.5.1.16
snDvmrpRouteNextHopEntry brcdIp.1.2.5.1.16.1
snDvmrpRouteNextHopSource brcdIp.1.2.5.1.16.1.1
Syntax: IpAddress snDvmrpRouteNextHopSourceMask brcdIp.1.2.5.1.16.1.2
Syntax: IpAddress snDvmrpRouteNextHopVifIndex brcdIp.1.2.5.1.16.1.3
Syntax: Integer32 snDvmrpRouteNextHopType brcdIp.1.2.5.1.16.1.4
Syntax: Integer
Access
None
None
Read only
Read only
Read only
Read only
Description
The DVMRP Routing Next Hop Table
An entry the DVMRP Routing Next Hop Table.
Shows the network mask of the source. This object plus the
“snDvmrpRouteNextHopSourceMask” object identify the
source of the next hop.
Shows the network mask of the source. This object plus the
object identify the sources of the next hop.
The snDvmrpVInterfaceVifIndex value of the virtual interface for the outgoing interface for this next hop.
Identifies the type of router for the next hop:
• leaf(1) – There are no neighbors at the next hop
• branch(2) – Neighbors are attached to the next hop
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DVMRP virtual interface statistics table
The DVMRP Virtual Interface Statistics Table provides information about the DVMRP routes.
Name, OID, and Syntax Access Description snDvmrpVIfStatTable brcdIp.1.2.5.1.17
snDvmrpVIfStatEntry brcdIp.1.2.5.1.17.1
snDvmrpVIfStatVifIndex brcdIp.1.2.5.1.17.1.1
Syntax: Integer snDvmrpVIfStatInPkts brcdIp.1.2.5.1.17.1.2
Syntax: Counter32 snDvmrpVIfStatOutPkts brcdIp.1.2.5.1.17.1.3
Syntax: Counter32 snDvmrpVIfStatInOctets brcdIp.1.2.5.1.17.1.4
Syntax: Counter32 snDvmrpVIfStatOutOctets brcdIp.1.2.5.1.17.1.5
Syntax: Counter32 snDvmrpVIfStatInProbePkts brcdIp.1.2.5.1.17.1.6
Syntax: Counter32 snDvmrpVIfStatOutProbePkt s brcdIp.1.2.5.1.17.1.7
Syntax: Counter32 snDvmrpVIfStatDiscardProbe
Pkts brcdIp.1.2.5.1.17.1.8
Syntax: Counter32 snDvmrpVIfStatInRtUpdateP kts brcdIp.1.2.5.1.17.1.9
Syntax: Counter32 snDvmrpVIfStatOutRtUpdate
Pkts brcdIp.1.2.5.1.17.1.10
Syntax: Counter32 snDvmrpVIfStatDiscardRtUp datePkts brcdIp.1.2.5.1.17.1.11
Syntax: Counter32
None
None
The DVMRP Virtual Interface Statistics Table
An entry in the DVMRP Virtual Interface Statistics Table
Read only The ifIndex value of this DVMRP virtual interface.
Read only Shows the number of packets that have arrived on the DVMRP virtual interface.
Read only Shows the number of packets that have been sent on the DVMRP virtual interface.
Read only Shows the number of octets that have arrived on the DVMRP virtual interface.
Read only Shows the number of octets that have been sent on the DVMRP virtual interface.
Read only Shows the number of probe packets that have arrived on the DVMRP virtual interface.
Read only Shows the number of probe packets that have been sent on the
DVMRP virtual interface.
Read only Shows the number of probe packets that have been discarded by the
DVMRP virtual interface.
Read only Shows the number of route update packets that have arrived on the
DVMRP virtual interface.
Read only Shows the number of route update packets that have been sent on the DVMRP virtual interface.
Read only Shows the number of route update packets that have been discarded by the DVMRP virtual interface.
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Name, OID, and Syntax snDvmrpVIfStatInGraftPkts brcdIp.1.2.5.1.17.1.12
Syntax: Counter32 snDvmrpVIfStatOutGraftPkts brcdIp.1.2.5.1.17.1.13
Syntax: Counter32 snDvmrpVIfStatDiscardGraft
Pkts brcdIp.1.2.5.1.17.1.14
Syntax: Counter32 snDvmrpVIfStatInGraftAckPk ts brcdIp.1.2.5.1.17.1.15
Syntax: Counter32 snDvmrpVIfStatOutGraftAck
Pkts brcdIp.1.2.5.1.17.1.16
Syntax: Counter32 snDvmrpVIfStatDiscardGraft
AckPkts brcdIp.1.2.5.1.17.1.17
Syntax: Counter32 snDvmrpVIfStatInPrunePkts brcdIp.1.2.5.1.17.1.18
Syntax: Counter32 snDvmrpVIfStatOutPrunePkt s brcdIp.1.2.5.1.17.1.19
Syntax: Counter32 snDvmrpVIfStatDiscardPrun ePkts brcdIp.1.2.5.1.17.1.20
Syntax: Counter32
Access Description
Read only Shows the number of graft packets that have arrived on the DVMRP virtual interface.
Read only Shows the number of graft packets that have been sent on the
DVMRP virtual interface.
Read only Shows the number of graft packets that have been discarded by the
DVMRP virtual interface.
Read only Shows the number of graft acknowledge packets that have arrived on the DVMRP virtual interface.
Read only Shows the number of graft acknowledge packets that have been sent on the DVMRP virtual interface.
Read only Shows the number of graft acknowledge packets that have been discarded by the DVMRP virtual interface.
Read only Shows the number of prune packets that have arrived on the DVMRP virtual interface.
Read only Shows the number of prune packets that have been sent on the
DVMRP virtual interface.
Read only Shows the number of prune packets that have been discarded by the
DVMRP virtual interface.
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