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New Member

multicast RP selection

hi guys.

i'm facing this strange issue, where the router is not seeing/showing the priority of the RP. and hence selecting the wrong RP.

The device with issue

show ip pim rp mapping

PIM Group-to-RP Mappings

Group(s) 224.0.0.0/4

  RP 10.97.255.1 (?), v2

    Info source: 10.87.255.1 (?), via bootstrap

         Uptime: 2w1d, expires: 00:01:32

  RP 10.87.255.1 (?), v2

    Info source: 10.87.255.1 (?), via bootstrap

         Uptime: 2w1d, expires: 00:01:34

it is not showing the priority, hence it is selecting the one with highest IP. BUT the design is other way around. a working router has the following output

show ip pim rp mapping

PIM Group-to-RP Mappings

Group(s) 224.0.0.0/4

  RP 10.87.255.1 (?), v2

    Info source: 10.87.255.1 (?), via bootstrap, priority 10, holdtime 150

         Uptime: 7w2d, expires: 00:01:58

  RP 10.97.255.1 (?), v2

    Info source: 10.87.255.1 (?), via bootstrap, priority 20, holdtime 150

         Uptime: 7w2d, expires: 00:01:56

show versoin of the not working correctly device

show ver

Cisco Internetwork Operating System Software

IOS (tm) MSFC Software (C6MSFC-JSV-M), Version 12.1(26)E8, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2006 by cisco Systems, Inc.

Compiled Fri 29-Dec-06 08:35 by hqluong

Image text-base: 0x60008F90, data-base: 0x61C8A000

ROM: System Bootstrap, Version 12.0(3)XE, RELEASE SOFTWARE

BOOTLDR: MSFC Software (C6MSFC-JSV-M), Version 12.1(26)E8, RELEASE SOFTWARE (fc1)

RCHOU505A uptime is 4 years, 47 weeks, 1 day, 19 hours, 18 minutes

System returned to ROM by processor memory parity error at PC 0x601E3954, address 0x0 at 12:57:09 UTC Wed Sep 24 2008

System restarted at 12:58:13 UTC Wed Sep 24 2008

System image file is "bootflash:c6msfc-jsv-mz.121-26.E8.bin"

cisco Cat6k-MSFC (R5000) processor with 114688K/16384K bytes of memory.

Processor board ID SAD035101KE

R5000 CPU at 200Mhz, Implementation 35, Rev 2.1

Last reset from power-on

Bridging software.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

TN3270 Emulation software.

73 Virtual Ethernet/IEEE 802.3  interface(s)

123K bytes of non-volatile configuration memory.

4096K bytes of packet SRAM memory.

16384K bytes of Flash internal SIMM (Sector size 256K).

Configuration register is 0x2102

i Suspect it is IOS issue.

2 REPLIES
Cisco Employee

multicast RP selection

Hi Sulaiman,

The IOS you are currently use on this device is really old. I agree with you that the issue is most probably software related. I would suggest you upgrade to some more recent IOS.

Regards

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México 
Paseo de la Reforma 222 Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

multicast RP selection

Hi,would there be any document highlighting that? i tried to look but couldn't find.

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