05-06-2009 02:38 AM
The first Qs is
Both the core switches will be acting as a default gateway for the user vlan 23. so half of the users will be sending the traffic to Core SW1 and other half to Core SW2. Since wccp is enabled on the the svi on both the switches so the traffic should be redirected to the WAAS by both the core switches.
Will the WAE be able to differentiate between both the swithches based on their mac addresses and will sent back the traffic to the same router that have sent that traffic. as both the routers are on my router-list.
The complete configuration is attached here.
Data Center Configuration
Configuring Core Switch for WAE CM
Vlan 10
Name Central_Mgr
!
interface Vlan10
ip address 10.10.1.1 255.255.255.0
!
Interface gigabit 1/36
Description Connected to Central Manager
Switchport mode access
Swicthport access vlan 10
!
Configuring Core Switch for Data Center WAE
Vlan 11
Name Data-Center-WAE
!
Interface vlan 11
Ip address 10.11.1.1 255.255.255.0
!
Interface gigabit 1/36
Description Connected to WAE
Switchport
Switchport mode access
Swicthport access vlan 11
!
Configuring Core Switch for WCCP
Ip wccp version 2
Ip wccp 61
Ip wccp 62
Ip cef
Enabling WCCP services on Server Vlan
interface Vlan6
ip address 10.6.1.1 255.255.255.0
ip wccp 61 redirect in
ip wccp 62 redirect out
WAE Configuration
Hostname DA-WAE
Ip default-gateway 10.11.1.1
Wccp router-list 1 10.11.1.1
Wccp tcp-promiscuous router-list 1 l2-redirect mask-assign
The Layer 2 redirect and mask assign option for hardware forwarding
Wccp version 2
FWSM configuration
FWSM version is 3.2(10) which supports the below command as per command reference guide
Conf t
Policy-map global_policy
Class inspection_default
Inspect waas
Exit
Branch configuration
Configuring Primary Core Switch for Branch WAE
Vlan 25
Name Branch-WAE
!
Interface vlan 25
Ip address 10.94.25.2 255.255.255.0
Standby 25 ip 10.94.25.1
Standby 25 priority 105
Standby 25 preempt
No shutdown
!
Interface gigabit 1/43
Description Connected to WAE
Switchport mode access
Swicthport access vlan 25
!
Configuring Secondary Core Switch for Branch WAE
Vlan 25
Name Branch-WAE
!
Interface vlan 25
Ip address 10.94.25.3 255.255.255.0
Standby 25 ip 10.94.25.1
Standby 25 preempt
Interface gigabit 1/43
Description Connected to WAE
Switchport mode access
Swicthport access vlan 25
!
Configuring User Vlan for WCCP on Primary Core-Switch
Interface vlan 23
description Data vlan for 23rd Floor
ip address 10.93.23.252 255.255.255.0
ip helper-address 10.96.1.5
glbp 123 ip 10.93.23.254
glbp 123 priority 115
glbp 123 preempt
ip wccp 61 redirect in
ip wccp 62 redirect out
Configuring User Vlan for WCCP on Secondary Core-Switch
Interface vlan 23
description Data vlan for 23rd Floor
ip address 10.93.23.253 255.255.255.0
glbp 123 ip 10.93.23.254
glbp 123 priority 115
glbp 123 preempt
ip wccp 61 redirect in
ip wccp 62 redirect out
no shutdown
WAE Configuration
Hostname DA-WAE
Ip default-gateway 10.94.25.1
Wccp router-list 1 10.94.25.2 10.94.25.3
Since Both the core Switches are running GLBP for user vlans and WAE is in a vlan 25 which is present on both the switches and they are running HSRP for WAE Vlan so both of them will be sending the traffic to the WAE so the WAE should have both the routers in the router-list as it is above which is apart from the gateway.
Wccp tcp-promiscuous router-list 1 l2-redirect mask-assign
The Layer 2 redirect and mask assign option for hardware forwarding
Wccp version 2
ASA Configuration
The current ASA version is 7.2(2) which does not supports then below command and this is required in order for WAAS to work.
Recommended upgrade: This command was introduced in 7.2(3). However the latest IOS release by Cisco is 8.0(4)
Policy-map global_policy
Class inspection_default
Inspect waas
Exit
07-27-2009 06:06 AM
Probably a little late for a reply.
With WCCP you have redirect (traffic from router or switch to WAE) and return traffic (WAE to router or switch).
So this s minefield of confusion and limitations. The return method is the egress method, and that can be seen on the way with show egress. The default egress method is ip forwarding, which means the WAE will use its configured default gateway, and hence have the issue you describe, which I think they call "network path affinity". If you use GRE return and forward the WAE will send it back to the switch/router who sent it. The best return method for a 6500 PFC3 is Generic GRE, which is done in hardware.
Hope this helps.
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