[c-nsp] HSRP aware PIM not working

Mon Sep 1 09:50:22 EDT 2014

Hi,

I try to implement PIM ina  HSRP setup, following this guidelines:
http://www.cisco.com/en/US/docs/ios-xml/ios/ipmulti_pim/configuration/15-2s/imc_hsrp_aware.html#GUID-1294B212-466A-4D8D-AB20-D8DE0B3645CD

On the MC_Router-FW there was a static route to the HSRP address, however
RPF check failed, as the the PIM neigbors are announced via the physical
Interface-IP (.252 and .253).
I could not catch any additonal PIM-hellos nor was an additional
PIM-neigborship listed as described.

As soon as Implement routes to the physical interfaces it works.

*MC_Router_FW#sh run | i ip route*
* no ip route-cache*
*ip route 0.0.0.0 0.0.0.0 10.16.146.252*
*ip route 0.0.0.0 0.0.0.0 10.16.146.253 200*

What I am missing ?
Any hints appreciated, cheers keti

Setup:

                                                                     ------
1941 (1)
 Receiver    ---- 3560X       ----         HSRP IP
----  HSRP IP---      Source
                  RP                                               ------
1941 (2)

FW-LEFT .252
 10.16.146.10 ---- MC_Router_FW ---- 10.16.146.254               ----
 10.16.156.254--- 10.16.156.20
                          RP 44.44.44.44
 FW-RIGHT .253

Config-snipplets:
**** FW-LEFT#
i*nterface GigabitEthernet0/1.830*
* encapsulation dot1Q 830*
* ip address 10.16.146.252 255.255.255.0*
* ip pim redundancy 830 hsrp dr-priority 110*
* ip pim sparse-mode*
* standby version 2*
* standby 830 ip 10.16.146.254*
* standby 830 timers 1 3*
* standby 830 priority 50*
* standby 830 preempt*
*!*
*interface GigabitEthernet0/1.850*
* encapsulation dot1Q 850*
* ip address 10.16.156.252 255.255.255.0*
* ip pim redundancy 850 hsrp dr-priority 110*
* ip pim sparse-mode*
* standby version 2*
* standby 850 ip 10.16.156.254*
* standby 850 timers 1 3*
* standby 850 priority 110*
* standby 850 preempt*

* FW-LEFT#sh standby brief *
*                     P indicates configured to preempt.*
*                     |*
*Interface   Grp  Pri P State   Active          Standby         Virtual IP*
*Gi0/1.830   830  50  P Standby 10.16.146.253   local
10.16.146.254*
*Gi0/1.850   850  110 P Active  local           10.16.156.253
10.16.156.254*

!

**** FW-RIGHT#
i*nterface GigabitEthernet0/1.830*
* encapsulation dot1Q 830*
* ip address 10.16.146.253 255.255.255.0*
* ip pim redundancy 830 hsrp dr-priority 110*
* ip pim redundancy 850 hsrp dr-priority 90*
* ip pim sparse-mode*
* standby version 2*
* standby 830 ip 10.16.146.254*
* standby 830 timers 1 3*
* standby 830 priority 90*
* standby 830 preempt*
*!*
*interface GigabitEthernet0/1.850*
* encapsulation dot1Q 850*
* ip address 10.16.156.253 255.255.255.0*
* ip pim redundancy 850 hsrp dr-priority 110*
* ip pim sparse-mode*
* standby version 2*
* standby 850 ip 10.16.156.254*
* standby 850 timers 1 3*
* standby 850 priority 90*
* standby 850 preempt*

* FW-RIGHT#sh standby brie*
*                     P indicates configured to preempt.*
*                     |*
*Interface   Grp  Pri P State   Active          Standby         Virtual IP*
*Gi0/1.830   830  90  P Active  local           10.16.146.252
10.16.146.254*
*Gi0/1.850   850  90  P Standby 10.16.156.252   local
10.16.156.254*

*MC_Router_FW#SH IP MROUTe   *
*IP Multicast Routing Table*
*Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C -
Connected,*
*       L - Local, P - Pruned, R - RP-bit set, F - Register flag,*
*       T - SPT-bit set, J - Join SPT, M - MSDP created entry, E -
Extranet,*
*       X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,*
*       U - URD, I - Received Source Specific Host Report, *
*       Z - Multicast Tunnel, z - MDT-data group sender, *
*       Y - Joined MDT-data group, y - Sending to MDT-data group, *
*       G - Received BGP C-Mroute, g - Sent BGP C-Mroute, *
*       N - Received BGP Shared-Tree Prune, n - BGP C-Mroute suppressed, *
*       Q - Received BGP S-A Route, q - Sent BGP S-A Route, *
*       V - RD & Vector, v - Vector, p - PIM Joins on route, *
*       x - VxLAN group*
*Outgoing interface flags: H - Hardware switched, A - Assert winner, p -
PIM Join*
* Timers: Uptime/Expires*
* Interface state: Interface, Next-Hop or VCD, State/Mode*

*(10.16.156.20, 239.255.255.250), 00:00:43/00:02:16, flags: sTI*
*  Incoming interface: Vlan830, RPF nbr 10.16.146.252*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:00:43/00:02:16*

*(10.16.156.20, 239.5.5.3), 00:01:29/00:02:55, flags: sTI*
*  Incoming interface: Vlan830, RPF nbr 10.16.146.252*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:00:43/00:02:16*

*(10.16.156.20, 239.5.5.9), 00:00:43/00:02:16, flags: sTI*
*  Incoming interface: Vlan830, RPF nbr 10.16.146.252*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:00:43/00:02:16*

*(10.16.156.20, 239.5.5.8), 00:00:43/00:02:16, flags: sTI*
*  Incoming interface: Vlan830, RPF nbr 10.16.146.252*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:00:43/00:02:16*

*(*, 233.56.56.57), 00:01:28/stopped, RP 44.44.44.44, flags: SJC*
*  Incoming interface: Null, RPF nbr 0.0.0.0*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:01:28/00:02:16*

*(10.16.156.20, 233.56.56.57), 00:01:28/00:02:55, flags: JT*
*  Incoming interface: Vlan830, RPF nbr 10.16.146.252*
*  Outgoing interface list:*
*    Vlan831, Forward/Sparse, 00:01:28/00:02:16*

*MC_Router_FW#sh ip pim neig*
*PIM Neighbor Table*
*Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,*
*      P - Proxy Capable, S - State Refresh Capable, G - GenID Capable*
*Neighbor          Interface                Uptime/Expires    Ver   DR*
*Address
 Prio/Mode*
*10.16.146.252     Vlan830                  00:49:37/00:01:19 v2    1 / S P
G*
*10.16.146.253     Vlan830                  00:51:01/00:01:24 v2    1 / DR
S P G*
*MC_Router_FW#*