Displaying the SA check information

Use the following procedure to display the peer information from which the router accepts SA originating from the RP. The following procedure also checks if the specified (S,G,RP) will be accepted from the peer.

Procedure

  1. Enter Privileged EXEC mode:

    enable

  2. Display the SA check information:

    show ip msdp sa-check source {A.B.C.D} group {A.B.C.D} rp {A.B.C.D} [peer {A.B.C.D}] [vrf WORD<0-16>] [vrfids WORD<0-512>]

Example

Switch:#enable
Switch:1#show ip msdp sa-check source 10.10.10.1 group 225.1.1.1 rp 172.16.10.13 peer 3.3.3.1
                          MSDP SA Check - GlobalRouter
============================================================================

RPF peer information for (172.16.10.13)
RPF peer: (172.16.121.10)
RPF route/mask: 172.16.0.0/255.255.0.0
RPF rule: Peer is IGP next hop of best route
RPF type: unicast (ospf)
(10.10.10.1, 225.1.1.1, 172.16.10.13) - SA Accepted

Switch:1#show ip msdp sa-check source 5.5.5.1 group 225.1.1.1 rp 172.16.10.13 vrf msdpvrf
============================================================================
                          MSDP SA Check- VRF msdpVrf
============================================================================
RPF peer information for (172.16.10.13)
RPF peer: (172.16.121.10)
RPF route/mask: 172.16.0.0/255.255.0.0
RPF rule: Peer is IGP next hop of best route
RPF type: unicast (ospf)
(5.5.5.1, 225.1.1.1, 172.16.10.13) - SA Filtered by IN
filter route-policy abc


Switch:1#show ip msdp sa-check source 5.5.5.1 group 225.1.1.1 rp 59.59.59.1 peer 3.3.3.1
============================================================================
                          MSDP SA Check - GlobalRouter
============================================================================
(5.5.5.1, 225.1.1.1, 172.16.10.13) - SA not accepted due
to RPF peer mismatch

Variable definitions

The following table defines parameters for the show ip msdp sa-check command.

Variable

Value

group {A.B.C.D}

Specifies the group IP address.

peer {A.B.C.D}

Specifies the MSDP peer IP address.

rp {A.B.C.D}

Specifies the RP IP address.

source {A.B.C.D}

Specifies the source IP address.

vrf WORD<0–16>

Displays configuration information for a particular VRF.

vrfids WORD<0–512>

Displays configuration information for a particular VRF ID.