05-12-2010 09:45 AM
Hi all,
We have a setup in remote site with 2 WAE 474 . We added the second WAE because we saw TFO overload connections and the users in the site increased. After adding the second WAE, we do not see any active connection in the second box and the first box still gives an TFO overload alarm. Is there any configuration that needs to be done.
Thanks in Advance
05-12-2010 09:59 AM
What interception method are you using (inline, WCCP, etc.)? If you are using WCCP, what type of routers/switches do you have WCCP enabled on?
Zach
05-12-2010 11:16 AM
Hi Zach,
We are using WCCP interception method. The setup is as follows. 2811 router ( Ver 12.4.17)>>>>4503 switch>> WAE 1 and WAE2.We are using version 4.1.5c has code in WAE's. The WCCP is turned on the 2811 router.
05-12-2010 11:24 AM
Can you share the configuration of the 2811? I'm interested on which interfaces you have service groups 61 and 62 configured on?
Zach
05-12-2010 11:31 AM
!
interface FastEthernet0/0.1
encapsulation dot1Q 1
ip wccp 61 redirect in
!
!
interface FastEthernet0/0.899
description WAN Acceleration
encapsulation dot1Q 899
ip wccp redirect exclude in
!
interface Serial0/0/0:0
bandwidth 1536
ip accounting output-packets
ip wccp 62 redirect in
!
interface Serial0/1/0
description BACKUPLINK
bandwidth 1536
ip wccp 62 redirect in
delay 2010
05-12-2010 11:36 AM
Thanks. The issue is most likely caused by the hash algorithm used to distrubute load across the WAEs. The hash is fairly basic, and depending on the distribution of client IP addresses at the site, it can cause all traffic to be redirected to a single WAE. You can try including the destination (i.e. server) IP address in the hash with the following command arguments on the WAEs:
wccp tcp-promiscuous router-list-num 1 hash-source-ip hash-destination-ip
Regards,
Zach
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