[c-nsp] IOS 12.2.33 SRA in 7600

[Dave Ownby]

I've ran into some gotcha items on the code, some of which have been there
for awhile and some haven't like TE not supported over port-channels,
auto-tunnel not being happy with NSF/SSO, but overall the NSF/SSO and
graceful restart hooks were enough for me to move forward in getting it
deployed.

We've ran it through two test cycles and now I have it running in production
on a small segment of a fairly large service provider network after testing
for the past few weeks. We run a pretty full edge configuration from L2VPNs
to L3VPNs to TE so I was honestly expecting to run into "show stoppers" in
testing and production launches but I haven't seen them yet.

The one caveat that I would say is that I haven't re-tested BFD after SXF
which had some issues with the way it was scheduled on the processor, so
eventually I'll get around to re-testing that on SRA and see if it's happy
with the new scheduling work they've done.

Dave

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Richard A
Steenbergen
Sent: Sunday, September 10, 2006 2:26 AM
To: Mike Butash
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] IOS 12.2.33 SRA in 7600

On Sat, Sep 09, 2006 at 03:32:39PM -0700, Mike Butash wrote:
> Just out of curiosity, what compelling reasons did you have (or how many 
> beers) to put SRA on a box in production?  ;)
> 
> I'd looked through the features for SRA, there were only a few that 
> really looked to be worth investigating, but for the most part it seemed 
> not worth the time given I knew I'd be experiencing issues such as you 
> describe as well.  It never fails just how many issues one finds when 
> actually poking at a 6500 in real world situations these days, 
> especially in 12.2SX, now apparently SR too.  I really feel like I'm 
> being used as cheap Q/A for Cisco sometimes...

If the features aren't worth it for you (and unless you're a service 
provider they probably aren't), by all means don't run it. And, if you 
didn't expect exactly these types of issues, you haven't been using Cisco 
very long. :)

For me the most important features are the LDP/RSVP/AToM graceful restart, 
MPLS autotunnel for FRR and FRR enhancements in general, BGP nexthop 
tracking, etc. There are lots of other little nice things that can really 
make your life easier compared to SXF too, for example the enhancements in 
subinterface support, config rollback and config archiving, dual-as 
support, etc. And don't forget, there are a ton of internal enhancements 
behind the scenes that help make the MSFC3 a little less underpowered and 
the scheduler suckiness a little less bad.

Sure it isn't perfect, you could even argue it isn't "good", but it is at 
least "better" (if you're a feature loving service provider). Call me when 
they port JUNOS to the 7600 and I'm there, until then it is the best code 
available for the best L3 switch platform available, and that pretty much 
sums it up. :)

-- 
Richard A Steenbergen <ras at e-gerbil.net>       http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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