Loss of Telnet Capability to 6509
We posted this to cisco-nsp but someone suggested posting it here as well... 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@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."
Richard J. Sears wrote:
Anyone have a similar problem or know how to check or restart the telnet process on the router without a reload...?
Isnt't here a maximum of VTY's that can be used at one time? Perhaps that's the problem. From the console what does the swtich say if you do a "show users" or "who" ? If it shows users, then there are some other connections using the VTY's and probably not permitting any more connections. Try clearing the vty's if you think they are stale. -- Robert Blayzor INOC, LLC rblayzor@inoc.net
Hi Robert - There is only a single connection to vty 2 (which I cannot clear) other than that, there are no other connections at all. On Wed, 28 Jul 2004 15:03:44 -0400 Robert Blayzor <rblayzor@inoc.net> wrote:
Richard J. Sears wrote:
Anyone have a similar problem or know how to check or restart the telnet process on the router without a reload...?
Isnt't here a maximum of VTY's that can be used at one time? Perhaps that's the problem. From the console what does the swtich say if you do a "show users" or "who" ?
If it shows users, then there are some other connections using the VTY's and probably not permitting any more connections.
Try clearing the vty's if you think they are stale.
-- Robert Blayzor INOC, LLC rblayzor@inoc.net
****************************************** Richard J. Sears Vice President American Digital Network ---------------------------------------------------- rsears@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."
participants (2)
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Richard J. Sears -
Robert Blayzor