ATM pvc wierd behaviour!

Unanswered Question
Mar 25th, 2008

I have the following config:

interface ATM12/0/0.78 point-to-point

bandwidth 40000

ip address 10.10.10.1 255.255.255.252

cdp enable

pvc 0/78

abr 40000 40000

oam-pvc manage

encapsulation aal5snap

max-reserved-bandwidth 90

service-policy out xxxxxxx

For any reason (I would like to know why) the traffic stops flowing trough this pvc. On my monitoring tool I don't see any traffic. 1% of use

To solve the problem I must to delete interface ATM12/0/0.78 point-to-point and then configure it over again in both sites.

Then traffic starts flowing normally.

It doesnt happen very often but it occurs.

Does any one have a similar problem?

Thanks

Regards

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Paolo Bevilacqua Tue, 03/25/2008 - 14:47

That is a bug and bad one too. Can mean undetected crash in atm controller microcode.

What platform is that and what exact IOS ?

Leonardo A Pena... Tue, 03/25/2008 - 15:09

It is my plataform

Cisco Internetwork Operating System Software

IOS (tm) RSP Software (RSP-JSV-M), Version 12.3(18), RELEASE SOFTWARE (fc3)

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

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

Compiled Wed 15-Mar-06 18:18 by dchih

Image text-base: 0x40010AFC, data-base: 0x42238000

ROM: System Bootstrap, Version 12.0(20011126:200409) [mssunil-RSP16_BENGAL_120S

251], DEVELOPMENT SOFTWARE

BOOTLDR: RSP Software (RSP-JSV-M), Version 12.3(18), RELEASE SOFTWARE (fc3)

er-plcgua1 uptime is 6 days, 6 hours, 19 minutes

System returned to ROM by reload at 10:45:51 CCS Wed Mar 19 2008

System restarted at 11:23:46 CCS Wed Mar 19 2008

System image file is "disk1:rsp-jsv-mz.123-18.bin"

Last reload reason: Unknown reason

cisco RSP16 (R7000A) processor with 262144K/8216K bytes of memory.

R7000 CPU at 400MHz, Implementation 39, Rev 3.3, 256KB L2, 2048KB L3 Cache

Last reset from power-on

G.703/E1 software, Version 1.0.

G.703/JT2 software, Version 1.0.

Channelized E1, Version 1.0.

X.25 software, Version 3.0.0.

SuperLAT software (copyright 1990 by Meridian Technology Corp).

Bridging software.

TN3270 Emulation software.

Primary Rate ISDN software, Version 1.1.

Chassis Interface.

2 VIP6-80 RM7000B controllers (4 Serial)(2 ATM).

3 VIP2 controllers (2 FastEthernet)(8 Ethernet)(12 Serial).

2 VIP4-80 RM7000 controllers (1 GigabitEthernet)(4 E1).

8 Ethernet/IEEE 802.3 interface(s)

2 FastEthernet/IEEE 802.3 interface(s)

1 Gigabit Ethernet/IEEE 802.3 interface(s)

20 Serial network interface(s)

2 ATM network interface(s)

2043K bytes of non-volatile configuration memory.

125952K bytes of ATA PCMCIA card at slot 1 (Sector size 512 bytes).

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

Slave in slot 6 is running Cisco Internetwork Operating System Software

IOS (tm) RSP Software (RSP-DW-M), Version 12.3(18), RELEASE SOFTWARE (fc3)

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

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

Compiled Wed 15-Mar-06 18:22 by dchih

Slave: Loaded from system

Slave: cisco RSP16 (R7000A) processor with 262144K bytes of memory.

Configuration register is 0x2102

Regards

Paolo Bevilacqua Tue, 03/25/2008 - 15:19

Actually it was "my" platform when I was a TME for cisco at the "edge bu" :)

Anyway, that is what I would do, upgrade to 12.3(26), chances are the bug has been fixed in the meanwhile. If that doesn't help, open a case with the tac and ask for immediate escalation to the "rsp" team, that is a bunch of guys that know well the PA-A3 and related bugs.

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