Load Balancing with WCCP

[Lee Win Neng]

Hi, I am currently using C3750X-24T-S model with the firmware version of 12.2(55)SE5. I had activated my license with "ipservices"as because WCCP configuration will require either IP Services or Advance IP Services feature set as stated in the datasheet, https://www.cisco.com/c/en/us/support/docs/security/web-security-appliance/118006-configure-wccp-00.html

I had successfully activate the firmware and able to use with the WCCP configuration commands. Unfortunately, I saw a load-balancing commands for WCCP through the Cisco datasheet that supported on C3750 series switches, https://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/cnce/1-0/installation/guide/NCE_Book/wccpLoadBalancing.html.

When I try to use this commands in global configuration, it shows "Invalid input detected at '^' marker"which not supported. I had tried to do some research online for any minimum version to support load balancing in 3750X series switch but I did not found any documents related.

Kindly advise on this queries.

Thank you. 

[Giuseppe Larosa]

Hello Lee,

I have given a look at the second document you have provided.

It is related to a network module that could be installed on ISR routers like C2811 or C2821 named NME or AIM.

The commands you have tried to put on your C3750 are for that kind of hardware setup

Hope to help

Giuseppe

see

https://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/cnce/1-0/installation/guide/NCE_Book/overview.html

Ensure that you have the appropriate Cisco access router to serve as the host router. The Network Capacity Expansion Service Module is supported on the Cisco access routers listed below:

Module	Platform
AIM - TPO - 1	Cisco 1841, 2801, 2811, 2821, 2851, 3825, 3845
AIM - TPO - 2	Cisco 1841, 2801, 2811, 2821, 2851, 3825, 3845
NME - TPO	Cisco 2811, 2821, 2851, 3825, 3845

[Lee Win Neng]

Hi,

Thank you for your comments. I had noticed that this commands of load balancing was using for hardware setup on ISR routers like C2811 or C2821 named NME or AIM. So that, I will not require to configure with any commands on my C3750X series switches for mask assignment (Load Balancing) between two WSA?

From my research, I found a article stated that "The mask is configured on the WCCP client, e.g. the WAN Optimiser or Proxy Server, which then informs the server during the WCCP session negotiation."

http://sabotage-networks.blogspot.my/2012/05/wccp-redirect-acls-and-masks.html?m=1

Correct me if I am wrong. Thank you.

[Giuseppe Larosa]

Hello Lee,

yes it is a very interesting article.

As far as I remember among the population of web cache servers one act as the master and provides to the router(s) / multilayer switch(es) how to redirect traffic among the alive web caches.

So I would agree that the mask is not a parameter configured on the router/switch side but on the servers side.

The article is interesting because it shows the effects and impact of the mask in usage of resources on mutlilayer switch as TCAM usage.

Hope to help

Giuseppe