SLB on 7600 (12.2(18)SXD3)

keith.campbell · ‎04-27-2005

Can anyone point me in the direction of technical documentation that provides DETAIL of the SLB connection sequence ? (Plenty found on configuration examples etc)

Having problems getting a pair of 7600 routers to run basic SLB. Real servers show up and operational to ICMP probe etc., and connect directly without problems, but refuse to connect via SLB.

Debug shows the real server never to come out of 'READY-FOR-TESTING' status and shows attempts to connect failure with

inband_slotmaps: inbound= 0x0180, outbound= 0x0000

Config is now very basic (have removed replication, standby and probes), but still no joy. Clients are on a network several hops away and can route to the real servers without problem. Real servers are seen in the arp table on the 7600.

ip slb serverfarm SU-SERVERFARM

!

real 10.100.40.11

inservice

!

real 10.100.40.12

inservice

!

ip slb vserver SU-SERVERFARM

virtual 10.100.40.20 255.255.255.248 tcp www

serverfarm SU-SERVERFARM

inservice

!

many thanks !

lisa.hall · ‎05-03-2005

I think this document should meet your needs. This document explains how Server load balancing works and the sequence of steps which are involved in IOS Server load balancing operation.

http://www.cisco.com/warp/public/cc/pd/si/casi/ca6000/tech/ios6k_wp.htm

keith.campbell · ‎05-05-2005

Thanks for the link. I had seen this document. Unfortunately, I am looking for a more detailed explanation of the SLB flow setup and the meaning of the ‘inband_slotmaps: inbound= 0x0180, outbound= 0x0000’. Maybe another job for the sniffer :)