[c-nsp] CSG 3.1(3)C4(13) blocks HTTP Continuation

[Riccardo Tortorici]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi all,
I'm facing a very strange issue on CSG.
I have ten 7609 each with 2 CSG configured in fault tolerance. The  
alias IP address in client vlan of these CSG is used as next hop by a  
load balancer (7606 with SLB),the traffic is passing through the CSG  
to a set of SSGs that have default route in uplink vlan to a firewall  
load balacer that will route customers to many web servers.
It happened that suddenly all the CSGs in all chassis (simply load  
balanced,not talking each other) started to block only HTTP  
continuation back to customers.As far as I know, CSG rel4 goes mad  
when it receives tcp packet in wrong order since it has no buffer in  
server vlan,unfortunately, during the problem, all the sniff traces  
taken with ethereal showed correct TCP seq numbers coming back to  
CSGs from web server.This issue is related to a single IP address  
(defined with ip csg content) all other destinations are ok.The  
workaround is to restart all the CSGs.I already sent a show tech- 
support to TAC and I'm still waiting for answers.In the meanwhile, do  
someone knows how to understand why all the CSGs hanged simoultanesly? 
We got this problem on a PoP, after I week we faced the same problem  
on another PoP.The only common element is the destination IP of the  
web server.
Thanks in advance.
Regs,
Riccardo


- - Riccardo Tortorici -
Linux Registered User #365170
Count yourself @ http://counter.li.org/ !
- --
Encrypted Mails Welcome
GPG key: 0xF3FCE306 available on  wwwkeys.pgp.net
GPG key fingerprint = C1C4 CA17 5135 8F5C 94C2  3347 4A22 67DB F3FC E306


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (Darwin)

iD8DBQFFT8E5SiJn2/P84wYRAhTSAKCPkGBJSC8MSVFS4vrnGGrsBfxVyACfVeJg
ZT8WeVOlXHHLh5Y7uIMvMyc=
=lffq
-----END PGP SIGNATURE-----