[c-nsp] Loss of Telnet Capability to 6509

[Mark Borchers]

In addtion to other recommendations to this post, add 
to your config:

	service tcp-keepalives-in

... to reduce the likelihood of hanging vty sessions.


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of 
> Richard J. Sears
> Sent: Wednesday, July 28, 2004 1:01 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Loss of Telnet Capability to 6509
> 
> 
> We have a 6509 running a SUP720 in IOS only mode (no cat os). 
> 
> At around 4am this morning, we lost our ability to telnet to 
> the router.
> Running a tcpdump shows that the router never responds to the telnet
> request. 
> 
> All functions and interfaces on the router seem fine (bgp, 
> etherchannel,
> ibgp, vtp, hsrp) and I can console into the sup with no 
> problems at all,
> we just cannot telnet into it. The CPU is at around 6%.
> 
> I have checked all access lists on the router, none were added/removed
> or modified on line vty that would cause this problem. All logging
> appears normal.
> 
> We are running Version 12.2(17a)SX3.
> 
> Anyone have a similar problem or know how to check or restart 
> the telnet
> process on the router without a reload...?
> 
> 
> ******************************************
> Richard J. Sears
> Vice President         
> American Digital Network                          
> ----------------------------------------------------
> rsears at adnc.com
> http://www.adnc.com
> ----------------------------------------------------
> 858.576.4272 - Phone
> 858.427.2401 - Fax
> INOC-DBA - 6130
> ----------------------------------------------------
> 
> I fly because it releases my mind 
> from the tyranny of petty things . . 
> 
> 
> "Work like you don't need the money, love like you've
> never been hurt and dance like you do when nobody's
> watching."
> 
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