Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

TCP Probe failure on CSM

I have had a customer raise an issue with me. Unfortunately I am not too hot on the CSM.

Switch Type - Cisco WS-C6513

IOS VSN - 12.2(18)SXF4

CSM Module details

Card Type - SLB Application Processor Module

Model - WS-X6066-SLB-APC

Hardware VSN - 1.8

Software VSN - 4.2(5)

I have spotted bug CSCsc38892, but cannot tell if the catakyst is running VRF - this is all the info I have been given.

We have 6500 chassis each with a CSM module in fault tolerance (ft) mode.

The current standby module (at the time it was the active one) reports as per output below that probes failed:

sh mod csm 1 real sf SAPCCP

real server farm weight state conns/hits

-------------------------------------------------------------------------

10.xxx.xxx.xxx:8000 SAPCCP 8 PROBE_FAILED 0

10.xxx.xxx.xxx:8000 SAPCCP 8 PROBE_FAILED 0

10.xxx.xxx.xxx:8000 SAPCCP 8 PROBE_FAILED 0

Probe failed could be for a number of reasons however the inconsistency is that the failed probes follow the CSM module and that the other module has working probes.

It is to be noted that the command “ping module csm 1 10.xxx.xxx.xxx” reports to be reachable as a good indicator that there is connectivity from the CSM to the server.

The following is the output from the currently active CSM (which used to be the standby one):

sh mod csm 1 real sf SAPCCP

real server farm weight state conns/hits

-------------------------------------------------------------------------

10.xxx.xxx.xxx:8000 SAPCCP 8 OPERATIONAL 51

10.xxx.xxx.xxx:8000 SAPCCP 8 OPERATIONAL 41

10.xxx.xxx.xxx:8000 SAPCCP 8 OPERATIONAL 52

For info:

FUNCTIONING CSM

sh mod 1

Mod Ports Card Type Model Serial No.

--- ----- -------------------------------------- ------------------ -----------

1 4 SLB Application Processor Complex WS-X6066-SLB-APC SAD094803UC

Mod MAC addresses Hw Fw Sw Status

--- ---------------------------------- ------ ------------ ------------ -------

1 0015.f998.a94a to 0015.f998.a951 1.8 4.2(5) Ok

Mod Online Diag Status

---- -------------------

1 Pass

relevant config lines

serverfarm SAPCCP

nat server

no nat client

failaction purge

real 10.xxx.xxx.xxx 8000

inservice

real 10.xxx.xxx.xxx 8000

inservice

real 10.xxx.xxx.xxx 8000

inservice

probe ABAP

vserver SAPCCP-VIP

virtual 10.xxx.xxx.xxx tcp www

vlan xxx

serverfarm SAPCCP

sticky 15 group 117

replicate csrp sticky

replicate csrp connection

no persistent rebalance

parse-length 4000

inservice

probe ABAP tcp

interval 2

retries 2

failed 6

open 3

port 8000

3 REPLIES

Re: TCP Probe failure on CSM

Continued:

NON-FUNCTIONING CSM

sh mod 1

Mod Ports Card Type Model Serial No.

--- ----- -------------------------------------- ------------------ -----------

1 4 SLB Application Processor Complex WS-X6066-SLB-APC SAD094609ZZ

Mod MAC addresses Hw Fw Sw Status

--- ---------------------------------- ------ ------------ ------------ -------

1 0015.f998.8386 to 0015.f998.838d 1.8 4.2(5) Ok

Mod Online Diag Status

---- -------------------

1 Pass

relevant config lines

serverfarm SAPCCP

nat server

no nat client

failaction purge

real 10.xxx.xxx.xxx 8000

inservice

real 10.xxx.xxx.xxx 8000

inservice

real 10.xxx.xxx.xxx 8000

inservice

probe ABAP-CCP

vserver SAPCCP-VIP

virtual 10xxx.xxx.xxx tcp www

vlan xxx

serverfarm SAPCCP

sticky 15 group 117

replicate csrp sticky

replicate csrp connection

no persistent rebalance

parse-length 4000

inservice

probe ABAP-CCP tcp

recover 2

interval 6

retries 2

failed 6

open 5

port 8000

Thanks for any pointers on where to look,

Paul.

New Member

Re: TCP Probe failure on CSM

I would check the ARP table on both CSMs and make sure it is correct for the servers in question.

Cisco Employee

Re: TCP Probe failure on CSM

Get a sniffer trace on the standby CSM.

See if the probes are fired or not and if the does get a response from the server.

G

586
Views
0
Helpful
3
Replies