ankbhasi Fri, 05/04/2007 - 08:09
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Hi Brannon,

SSO is always better then RPR+ if you IOS supports the same because the switchover time with SSO is less then 3 seconds where in RPR+ it is approx 30 seconds.

SSO needs minimum 12.2(18)SXD and as you mentioned you have 12.218 release I will recommed you to opt for NSF with SSO.



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Amit Singh Fri, 05/04/2007 - 08:18
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SRM is the good option rather than RPR+ as RPR+ gives you the switchover arnd 30-60 seconds while SSO gives you subsecond failover with 0-3 seconds.

Starting with IOS 12.2.18 code we default to SSO. RPR+ was used prior to the 12.2.18 Code. Use SSO/NSF for L2/L3 HA. Prior to 12.2.18 code we were supporting SSO/SRM

HTH,Please rate if it does.

-amit singh

atif-siddiqui Mon, 01/14/2008 - 13:55
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How does SSO/NSF work with MPLS LDP, I am testing and have an MPLS network I do not get 0 - 3 seconds repair time, it is about ~30 Sec same as RPR+



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