[c-nsp] Cisco 6509-V-E switch sup2t engine recommend IOS version

Xuhu NSP xuhu2zb at gmail.com
Wed Dec 3 07:39:59 EST 2014

Peter, thanks for your inputs, I will also use your version as well since this is the one recommend by Cisco download website now.


> On 2 Dec 2014, at 21:45, Peter Rathlev <peter at rathlev.dk> wrote:
>> On Tue, 2014-12-02 at 15:55 +0800, Xuhu NSP wrote:
>> Hi folks, we are starting to use this platform, any idea which IOS
>> version is quite stable? I checked in Cisco down website saying
>> suggested version is 15.0.1-sy7a.
>> Our feature requirement is quite simple, normal QOS marking and WRR,
>> layer 2 switching is needed also.
> We've been using IOS 15.0(1)SY6 with success for some time, and more
> recently we have upgraded to IOS 15.0(1)SY7a with no problems so far. We
> primarily use these devices as PE routers in an MPLS L3VPN network.
> You could also try IOS 15.1. If you happen to have any Sup720 devices in
> your network then keep in mind that IOS 15.0 doesn't support those, but
> IOS 15.1 does. I have no experience with IOS 15.1. We tried IOS 15.1
> when we started using Sup2T but were hit by a Netflow related bug
> (CSCui17732) and the fix for this first appeared in IOS 15.0(1)SY6, some
> time before IOS 15.1(1)SY3 which also fixed it. So we chose the 15.0
> release to get the fix faster.
> -- 
> Peter

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