[nsp] NSF and 7206

[Bruce Pinsky]

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James Edwards wrote:

| I am trying to understand how NSF works on a 7206. I found this:
|
| The Cisco 7200 is a single-route processor system and cannot maintain
| its forwarding table in the event of a route processor failure. It
| cannot perform nonstop forwarding of packets. However, it supports the
| NSF protocol extensions for BGP, OSPF, and ISIS. Therefore, it can peer
| with NSF-capable routers and facilitate the resynchronization of routing
| information with such routers.
|
| So in BGP, if I drop a BGP session, the routes (from this session) do
| not get marked stale, they are withdrawn. So graceful restart is of no
| benefit, as routes are never marked stale. Have I got that correct ?
|
| The part I am not getting is "facilitate the resynchronization". What is
| happening here ?
|

See if
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1839/products_feature_guide09186a008015fede.html

helps answer your question.

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bep

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