WCCP design question

[Jan Rockstedt]

Hi all,

We have and old DC with two Cisco WAAS's in WCCP GRE mode.
This two are working fine, without any problem, see below configuration.

wccp router-list 8 10.111.12.129 10.111.12.131
wccp tcp-promiscuous service-pair 61 62 mask src-ip-mask 0x1 dst-ip-mask 0x0
wccp tcp-promiscuous service-pair 61 62 failure-detection 30
wccp tcp-promiscuous service-pair 61 62 router-list-num 8 mask-assign
wccp version 2

Now we will move from the DC to a new hosting provider and have purchase two new Cisco WAAS's
Version: oe7541-4.4.5d.5, yes it old version. The provider run WCCP in L2 mode, not in GRE as above.
So my question is, does the below configuration looks fine for L2, as the above for GRE or do Need anything more?

wccp router-list 1 10.230.225.34 10.230.225.35
wccp tcp-promiscuous service-pair 61 62 failure-detection 30
wccp tcp-promiscuous service-pair 61 62 router-list-num 1 l2-redirect l2-return
wccp version 2

Regards Jan Rockstedt

[finn.poulsen]

Hi Jan,

Please be aware that the default assignment method is hash (at least on this SW version as far as i know), so in the new setup you'll be running hash !   Please check this with your provider and check that it's not running in Software on their platform .. .as hash is on many platforms.

Two nice explanations :

https://supportforums.cisco.com/document/133201/wccp-platform-support-overview#Introduction

http://www.cisco.com/web/services/news/ts_newsletter/tech/chalktalk/archives/200806.html

if you want the same load balancing algorithm as today, I think you should specify mask again with the same mask as today, otherwise you'll be load balancing on the 3rd octet in the IP address, instead of just odd/even as you're doing today.

Best regards

Finn

[Jan Rockstedt]

Hi Finn,

We have an 3850 switch on the lan side connected to the WAE.

The below URL do not have this modell. Do you know what is support for WCCP and 3850?
https://supportforums.cisco.com/document/133201/wccp-platform-support-overview#Introduction

I wasn't sure if we could use the same mask, but good that we can so the two buckets with be load balancing 50/50.

Regards Jan

[finn.poulsen]

Hi Jan,

As per this link, only mask is supported in hardware, so that should be fine :

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/network_management/configuration_guide/b_nm_3se_3850_cg/b_nm_3se_3850_cg_chapter_0101.html#reference_636B2F56FB71432C885C6C755AE65913

And you'll have to specify "mask-assign" after the l2-return parameter.

Best Regards

Finn

[Jan Rockstedt]

Hi Finn,

Thank you for the help.

This is what I will use for now.
Please answer if you see any problem with it.

wccp router-list 1 10.230.225.34 10.230.225.35
wccp tcp-promiscuous service-pair 61 62 mask src-ip-mask 0x1 dst-ip-mask 0x0
wccp tcp-promiscuous service-pair 61 62 failure-detection 30
wccp tcp-promiscuous service-pair 61 62 router-list-num 1 l2-redirect mask-assign l2-return

//Jan