Hi,
In trying to get SLB to work I believe I'm missing something I imagine is quite basic but i don't know what it is. The short description of my problem is that traffic is not sent back to the client when establishing a connection via the VIP.
I'm using base equipment: a Cat6509 with a Sup-1a, PFC, and MSFC. It's running 12.1(23) so it should be okay. I have a plain vanilla config:
<...snip...>
ip slb serverfarm FARM.100
real 10.33.10.105
inservice
!
real 10.33.10.106
inservice
!
ip slb vserver EBUSINESSCRP
virtual 111.222.222.111 tcp 0
serverfarm FARM.100
inservice
<...snip...>
I have not defined a Vlan for the VIP - didn't work when i did, and can't see why it is necessary(?)
All the show cmds look good except the sh ip slb reals which has the .106 server in READY_TO_TEST state.
I can ping the VIP
I can telnet (on the required port) to the reals
I cannot telnet to the VIP
- sh ip slb conns tells me there is a connection
- tcpdump on the real servers shows the inbound but no outbound traffic, unlike when I tcpdump while connecting to the real. It leads me to think there might be some issue with the RedHat servers but saying so just results in multilateral finger pointing. The svrs have NICs on several VLANs but their default gateways are on the real srvrs VLAN - 10.33.10.x
- debug ip slb all ... well here's a snippit:
<...snip...>
Oct 5 18:20:15: client= 10.0.0.49:1894
Oct 5 18:20:16: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= INIT -> SYNCLIENT
Oct 5 18:20:16: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:16: client= 10.0.0.49:1895
Oct 5 18:20:16: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:16: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:16: client= 10.0.0.49:1895
Oct 5 18:20:16: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:16: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:16: client= 10.0.0.49:1895
Oct 5 18:20:16: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:16: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:16: client= 10.0.0.49:1895
Oct 5 18:20:16: SLB_REAL_DEBUG: 10.33.10.105 (FARM.DBCRP-31) event = SLB_CONN_FAIL state= OPERATIONAL -> OPERATIONAL
Oct 5 18:20:16: SLB_CONN_DEBUG: TCP event= DESTROY, state= SYNCLIENT -> ZOMBIE
Oct 5 18:20:16: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:16: client= 10.0.0.49:1895
Oct 5 18:20:19: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= INIT -> SYNCLIENT
Oct 5 18:20:19: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:19: client= 10.0.0.49:1895
Oct 5 18:20:19: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:19: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:19: client= 10.0.0.49:1895
Oct 5 18:20:19: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:19: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:19: client= 10.0.0.49:1895
Oct 5 18:20:19: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= SYNCLIENT -> SYNCLIENT
Oct 5 18:20:19: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:19: client= 10.0.0.49:1895
Oct 5 18:20:19: SLB_REAL_DEBUG: 10.33.10.105 (FARM.DBCRP-31) event = SLB_CONN_FAIL state= OPERATIONAL -> OPERATIONAL
Oct 5 18:20:19: SLB_CONN_DEBUG: TCP event= DESTROY, state= SYNCLIENT -> ZOMBIE
Oct 5 18:20:19: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
Oct 5 18:20:19: client= 10.0.0.49:1895
Oct 5 18:20:25: SLB_CONN_DEBUG: TCP event= SYN_CLIENT, state= INIT -> SYNCLIENT
Oct 5 18:20:25: v_ip= 111.222.222.111:13515 ( 8), real= 10.33.10.105
<...snip...>
Thx for any help given
Mike
