We have a pair of CSMs running 4.2(4) in 6509s running 12.2(18)SXF6. During initial testing, I was able to telnet to port 80 on one of the RIPs and fail it over, and my telnet session stayed open. The most loss I've seen is a few packets, but I've never lost any connections that were already open.
Of course, your mileage may vary. ----- Aaron Conaway > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of James > Sneeringer > Sent: Thursday, August 30, 2007 11:04 AM > To: cisco-nsp@puck.nether.net > Subject: [c-nsp] CSM FT failover behavior > > We have a pair of 6509's running 12.1(27b)E1 native mode, > each with a CSM > running 4.2(6) in FT mode. > > Can anyone comment on the behavior of the CSMs during failover? In the > section on doing a "hitless upgrade" in the CSM 4.2 > Configuration Guide[1], > it's described as not resulting in any "major service > interruption", which I > take to mean that there could still be some noticeable affect > of failing > from one CSM to the other. > > All of our vservers replicate connection and sticky information. Can I > expect something simple like an HTTP session to survive the failover > process? > > -James > > [1] > http://www.cisco.com/en/US/docs/interfaces_modules/services_mo > dules/csm/4.2. > x/configuration/guide/redun.html#wp1046227 > > _______________________________________________ > cisco-nsp mailing list cisco-nsp@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/