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New Member

***Routing is NSF Aware***

I have EIGRP, and when i do a SHOW IP PRO, i get that message.. Can someone help me figure out what is going on

9 REPLIES

Re: ***Routing is NSF Aware***

Do you have NSF configured under EIGRP? NSF allows a router that is running EIGRP to assist NSF-capable neighbors to continue forwarding packets during a switchover operation or well-known failure condition. The EIGRP Nonstop Forwarding Awareness feature provides EIGRP with the capability to detect a neighbor that is undergoing an NSF restart event (route processor [RP] switchover operation) or well-known failure condition, maintain the peering session with this neighbor, retain known routes, and continue to forward packets for these routes.

http://www.cisco.com/en/US/docs/ios/iproute/configuration/guide/irp_eigrp_nsf_ps6441_TSD_Products_Configuration_Guide_Chapter.html#wp1056068

HTH,

Mark

New Member

Re: ***Routing is NSF Aware***

this message has been there for about 2 months now.. BUT I completed a switch upgrade and IOS upgrade on the new switch I added. So now each switch in the stack is on the same IOS. IS there anyway i can clear this message so i can see my EIGRP routing?

Re: ***Routing is NSF Aware***

I'm not exactly sure what you are seeing. Could you please post the output that you are seeing?

Mark

Hall of Fame Super Blue

Re: ***Routing is NSF Aware***

Dustin

It is not anything to worry about. Have a look at this link which will explain EIGRP and NSF (Non Stop Forwarding) -

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t15/feature/guide/ft_ensf.html

Jon

Hall of Fame Super Silver

Re: ***Routing is NSF Aware***

Hello Dustin,

that message just says your router is able to cooperate with a Non Stop Forwarding capable device.

NSF is a redundancy strategy that can be used on platforms with multiple supervisors like C7600 or GSRs:

in case of supervisor failure during switchover the device is capable to forward traffic (using the last updated CEF table)

so with NSF the neighbor device negotiates this feature and doesn't react to missing routing protocol hellos during switchover this means NSF aware otherwise the routes are declared invalid.

So no problem it is just a capability.

Hope to help

Giuseppe

New Member

Re: ***Routing is NSF Aware***

this message has been there for about 2 months now.. BUT I completed a switch upgrade and IOS upgrade on the new switch I added. So now each switch in the stack is on the same IOS. IS there anyway i can clear this message so i can see my EIGRP routing?

Hall of Fame Super Silver

Re: ***Routing is NSF Aware***

Hello Dustin,

do you mean EIGRP is not working correctly ?

If EIGRP is working correctly you can simply ignore those lines.

Hope to help

Giuseppe

New Member

Re: ***Routing is NSF Aware***

when i do a show run, nothing from EIGRP shows up like it used to.. Is there anything I can do?

Hall of Fame Super Silver

Re: ***Routing is NSF Aware***

Hello Dustin,

I'm afraid that you need to adapt to new sh run appearance.

Hope to help

Giuseppe

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