Cisco catalyst 6500 series Configuration Note page 168

Route Health Injection
The alias IP is very important because it is the IP that the CSM instructs the MSFC to use as the next-hop
to reach the advertised virtual server
!
probe PING icmp
interval 2
retries 2
failed 10
receive 2
!
serverfarm WEBFARM
nat server
no nat client
real 10.20.220.10
inservice
real 10.20.220.20
inservice
probe PING
!
vserver WEB
virtual 10.20.250.100 tcp www
vlan 221
# By default, a virtual server listens to traffic coming in on any VLAN. You can restrict
# access to a virtual server by defining a specific VLAN. When using Route Health
# Injection, it is required to specify the VLAN for the virtual server. This tells the CSM
# which next-hop it needs to program in the static route that it will inject in the MSFC
# routing tables.
serverfarm WEBFARM
advertise active
# This is the command that tells the CSM to inject the route for this virtual server. The
# option "active" tells the CSM to remove the route if the backend serverfarm fails.
persistent rebalance
inservice
Output of some show commands:
Cat6k-2# sh mod csm 5 probe detail
probe
---------------------------------------------------------------------
PING
real
------------------------------------------------------------------------------
10.20.220.20:80
10.20.220.10:80
Cat6k-2# sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
Gateway of last resort is 10.20.1.100 to network 0.0.0.0
C
S
Catalyst 6500 Series Content Switching Module Configuration Note
A-14
type port
icmp
vserver
WEB
WEB
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
10.0.0.0/8 is variably subnetted, 8 subnets, 3 masks
10.21.1.0/24 is directly connected, Vlan21
10.20.250.100/32 [1/0] via 10.20.221.2, Vlan221
interval retries failed
2 2 10
serverfarm
WEBFARM
WEBFARM
Appendix A Configuration Examples
open receive
2
policy status
(default) OPERABLE
(default) OPERABLE
OL-4612-01