[c-nsp] Problem with 7200 and 12.2(33)SRE upgrade

[Marco Marzetti]

Hello,

Why had so MANY problems with 12.2(33) SRE ( and SRD too ) and ATM on C7200 that we decided to revert to previous IOS ( ~12.3 ) and buy a new box to terminate the "new" ethernet services.

We experienced VC flapping and weird CLI counters.
Workaround for flapping was to remove and re-configure the ATM sub-interface.
We found no solution for counters

Ps. Since we opened a bug, Cisco reccomended us to upgrade to 15.1.

Hope this help

Jon Harald Bøvre <ccie at bovre.no> ha scritto:

>Hi
>
>You mention DSL, radius and PPP.
>
>We had similar problems some years ago, PPPoA/l2tp tunnels did not come
>up from all clients (7206 acted as LNS)
>Our upgrade was from 12.2T something to 12.3T something, cannot remember
>details.
>
>After several tries of this upgrade on several routers we opened a TAC
>case, and had a possible solution back within record breaking half an
>hour.
>Problem:
>Early versions of IOS did not check all parameters coming back from ACS
>Radius
>We had an errored/missing configuration on our ACS Radius
>Somewhere in 12.3 train this behaviour was changed to check all
>parameters
>Now the LNS refused tho make the connections.
>After making the neccesary adjustment on the ACS we had no problems with
>the upgrade.
>There is a BUG ID for this, search
>Later these routers have been upgraded to 12.2(24)T, and one to 15.0
>something without problems
>
>Dont know if this relates to your problems.
>
>Also check ATM support in your IOS, as ATM has started to fade away from
>newer IOS
>
>Jon Harald Bøvre
>
>
>
>
>
>
>
>
>
>On 4. jan. 2012 20:12 "Walter Keen" <walter.keen at rainierconnect.net>
>wrote:
>
>> Hi, I have a router I'm trying to move to a SR train, or more
>> specifically 12.2(33)SRE from 12.3(15a) but I have a reports from DSL
>> users of being unable to get to most places after that upgrade, which
>> we
>> reverted.
>> 
>> We've even setup a test router, and tried to duplicate it, with no
>> luck
>> so far. We do have one production router with that IOS (SRE) that
>> works
>> fine.
>> 
>> About the only difference I can find is hardware (CPU/midplane)
>> revisions and bootloader versions.
>> 
>> I'm starting to wonder if anyone else on this list has encountered
>> similar issues.
>> All are NPE-G1, some with 512m ram, others with 1G ram
>> 
>> C7200-1 uses NAT(I know), PPP, radius, tacacs, ospf, bgp. C7200-2 and
>> -3 use the same without NAT. We've tried replicating the config of -1
>> onto -4 (the lab system) without being able to reproduce the issue.
>> unfortunately these are all out of a support contract
>> 
>> C7200-1 (with the issue):
>> current IOS 12.3(15a)
>> ROM: 12.3(4r)T3
>> SB-1 CPU at 700MHz, Implementation 1, Rev 0.2, 512KB L2 Cache
>> 4 slot VXR midplane, Version 2.0
>> Bootloader: 12.3(9), RELEASE SOFTWARE (fc2)
>> Exhibited packet loss to ATM sub-interfaces (DSL customers)
>> when moving to 12.2(33)SRE
>> 
>> 
>> C7200-2 (another with the issue):
>> current IOS 12.4(25b)
>> ROM: 12.3(4r)T3
>> SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache
>> 4 slot VXR midplane, Version 2.6
>> Bootloader: 12.4(12), RELEASE SOFTWARE (fc1)
>> Exhibited packet loss to ATM sub-interfaces (DSL customers)
>> when moving to 12.2(33)SRE
>> 
>> C7200-3 (working in production on SRE):
>> current IOS 12.2(33)SRE
>> ROM: 12.2(20030826:190624) [BLD-npeg1_rommon_r11 102], DEVELOPMENT
>> SOFTWARE
>> SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache
>> 4 slot VXR midplane, Version 2.11
>> Bootloader: 12.4(12), RELEASE SOFTWARE (fc1)
>> 
>> 
>> C7200-4 (lab system, trying to replicate problem -- working on SRE):
>> current IOS 12.2(33)SRE
>> ROM: 12.3(4r)T1 fc1
>> SB-1 CPU at 700MHz, Implementation 1025, Rev 0.2, 512KB L2 Cache
>> 4 slot VXR midplane, Version 2.6
>> Bootloader: none listed in 'sh ver' output
>> 
>> 
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