Sup 720 HA redundnacy

[b-lamoureux]

with the new msfc3 and IOS vers 12.2.18, does anybody know what best method for redundancy is now: SSO or RPR + ??

Regards

Brannon Lamoureux

[ankbhasi]

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.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008027e4cd.html

HTH

Ankur

*Pls rate all helpfull post

[Amit Singh]

Brannon,

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

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/nsfsso.htm

HTH,Please rate if it does.

-amit singh

[atif-siddiqui]

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+

tx