RIP v2 advertisement causes crash

Unanswered Question
Feb 15th, 2007

Hi,

I have had a major problem this evening. I have a vpn router that connects to the rest of the world. we use BGP to share routes and redistribute them into rip. Rip v1 is currently announced and our core router is only set up to receive v2. When I enabled RIPv2 it caused the network to crash and the flexwan module went down. The following is the syslog output:

Feb 15 17:17:45 dublin-msfc1 1809: *Feb 15 16:09:45 gmt: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial8/0/0, changed state to down Feb 15 17:18:04 dublin-msfc1 1810: *Feb 15 16:10:04 gmt: %OIR-6-REMCARD: Card removed from slot 8, interfaces disabled Feb 15 17:18:04 dublin-msfc1 1811: *Feb 15 16:10:04 gmt: %OIR-6-REMCARD: Card removed from slot 8, interfaces disabled Feb 15 17:18:13 dublin-msfc1 1812: *Feb 15 16:10:12 gmt: %CWAN_RP-3-KEEPFAIL: The WAN module in slot 8/0 is not responding to keepalives Feb 15 17:18:29 dublin-msfc1 1813: *Feb 15 16:10:29 gmt: %CWAN_RP-6-CARDRELOAD: Module reloaded on slot 8/1 Feb 15 17:18:32 dublin-msfc1 1814: *Feb 15 16:10:32 gmt: %CWAN_RP-6-CARDRELOAD: Module reloaded on slot 8/0 Feb 15 17:18:59 dublin-msfc1 1815: *Feb 15 16:10:58 gmt: %CWAN_RP-6-CARDRELOAD: Module reloaded on slot 8/1 Feb 15 17:19:02 dublin-msfc1 1816: *Feb 15 16:11:01 gmt: %CWAN_RP-6-CARDRELOAD: Module reloaded on slot 8/0 Feb 15 17:19:06 dublin-msfc1 1817: *Feb 15 16:11:05 gmt: %LINK-3-UPDOWN: Interface Serial8/0/0, changed state to up Feb 15 17:19:06 dublin-msfc1 1818: *Feb 15 16:11:06 gmt: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial8/0/0, changed state to up

why would rip v2 cause this crash. i disabled sending rip v2 straight away and the routing table reconverged. As you can see from the output the flexwan came back up after i did this.

1,000,000 point rating for the answer :)

Gavin

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sundar.palaniappan Thu, 02/15/2007 - 11:32

Gavin,

Quick question. What model router/switch is this and very importantly, what's the IOS version it's running?

Sundar

gavin.mckee Thu, 02/15/2007 - 13:53

Hi Sundar,

The model is 6509 running in Hybrid mode. here is the output from a command on the MSFC.

Cisco Internetwork Operating System Software IOS (tm) MSFC2 Software (C6MSFC2-PSV-M), Version 12.1(13)E9, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1) TAC Support: http://www.cisco.com/tac Copyright (c) 1986-2003 by cisco Systems, Inc.

Compiled Sun 13-Jul-03 00:49 by hqluong

Image text-base: 0x40008C00, data-base: 0x41880000

ROM: System Bootstrap, Version 12.1(11r)E1, RELEASE SOFTWARE (fc1)

BOOTLDR: MSFC2 Software (C6MSFC2-PSV-M), Version 12.1(13)E9, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

itge-dublin-msfc1 uptime is 2 years, 46 weeks, 3 days, 6 hours, 45 minutes System returned to ROM by power-on System image file is "bootflash:c6msfc2-psv-mz.121-13.E9.bin"

cisco Cat6k-MSFC2 (R7000) processor with 114688K/16384K bytes of memory.

Processor board ID SAL0708D90B

R7000 CPU at 300Mhz, Implementation 39, Rev 3.3, 256KB L2, 1024KB L3 Cache Last reset from power-on Channelized E1, Version 1.0.

X.25 software, Version 3.0.0.

Bridging software.

2 FlexWAN controllers (3 Serial).

19 Virtual Ethernet/IEEE 802.3 interface(s)

3 Serial network interface(s)

509K bytes of non-volatile configuration memory.

32768K bytes of Flash internal SIMM (Sector size 512K).

Configuration register is 0x102

Hope you can help.

Regards

Gavin

gavin.mckee Thu, 02/15/2007 - 19:34

Hi Sundar,

The show version on the switch module shows

itge1-dcat6509> (enable) show version

WS-C6509 Software, Version NmpSW: 8.2(1) Copyright (c) 1995-2003 by Cisco Systems NMP S/W compiled on Dec 18 2003, 17:45:00

System Bootstrap Version: 7.1(1)

System Web Interface Version: Engine Version: 5.3.4 ADP Device: Cat6000 ADP Version: 5.0 ADK: 40 System Boot Image File is 'bootflash:BTSYNC_cat6000-sup2cvk8.8-2-1.bin'

System Configuration register is 0x2102

Hardware Version: 3.0 Model: WS-C6509 Serial: SAL0728GKM9

PS1 Module: WS-CAC-1300W Serial: ABC07422301

PS2 Module: WS-CAC-1300W Serial: ABC07322309

Mod Port Model Serial Versions

--- ---- ------------------- ----------- --------------------------------------

1 2 WS-X6K-SUP2-2GE SAL0735L0GG Hw : 4.3

Fw : 7.1(1)

Fw1: 6.1(3)

Sw : 8.2(1)

Sw1: 8.2(1)

WS-X6K-SUP2-2GE SAL0735L0GG Hw : 4.3

Sw :

2 2 WS-X6K-SUP2-2GE SAL0710A0UC Hw : 4.2

Fw : 7.1(1)

Fw1: 6.1(3)

Sw : 8.2(1)

Sw1: 8.2(1)

WS-X6K-SUP2-2GE SAL0710A0UC Hw : 4.2

Sw :

3 48 WS-X6148-GE-TX SAD074706WF Hw : 4.0

Fw : 7.2(1)

Sw : 8.2(1)

4 48 WS-X6148-RJ-45 SAL0739M79R Hw : 1.3

Fw : 5.4(2)

Sw : 8.2(1)

5 48 WS-X6148-RJ-45 SAL0739M7AK Hw : 1.3

Fw : 5.4(2)

Sw : 8.2(1)

6 48 WS-X6148-RJ-45 SAL0739M7JD Hw : 1.3

Fw : 5.4(2)

Sw : 8.2(1)

8 0 WS-X6182-2PA SAD074705C1 Hw : 1.6

Fw : 12.1(13)E9

Sw : 12.1(13)E9

9 0 WS-X6182-2PA SAD074705G8 Hw : 1.6

Fw : 12.1(13)E9

Sw : 12.1(13)E9

15 1 WS-F6K-MSFC2 SAL0734KKTT Hw : 2.5

Fw : 12.1(13)E9

Sw : 12.1(13)E9

16 1 WS-F6K-MSFC2 SAL0708D90B Hw : 2.5

Fw : 12.1(13)E9

Sw : 12.1(13)E9

DRAM FLASH NVRAM

Module Total Used Free Total Used Free Total Used Free

------ ------- ------- ------- ------- ------- ------- ----- ----- -----

2 131072K 76748K 54324K 32768K 20369K 12399K 512K 355K 157K

Uptime is 1055 days, 11 hours, 23 minutes

Hope this can help

Regards

Gavin

sundar.palaniappan Fri, 02/16/2007 - 14:11

Gavin,

I am suspecting it might be an IOS bug. It's difficult to imagine any other issue causing the flexwan to crash when enabling RIP v2. I did a quick search for bugs with similar symptoms and didn't find one. You may want to try another code, if that's an option. If it is not then you may have open TAC case to get answers.

HTH

Sundar

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