Route Health Injection - Cisco catalyst 6500 series Configuration Note

Appendix A Configuration Examples
Internet Address
--------------------------------------------------------------------
10.20.210.1
10.20.210.2
10.20.210.10
10.20.210.20
10.20.220.1
10.20.220.2
10.20.210.100
10.20.220.10
10.20.221.1
10.20.221.5
10.20.220.20
10.20.221.100
Cat6k-2# sh mod csm 5 vser
vserver
---------------------------------------------------------------------------
VIP1
VIP2
Cat6k-2# sh mod csm 5 conn detail
----------------------------------------------------------------------
In
Out TCP
In
Out TCP
# The previous command shows a connection opened from a client coming in from VLAN 221
# (client is 10.20.1.100). That connection goes to virtual IP address 1 (VIP1) and is
# balanced to 10.20.210.10. Another connection is opened from server 10.20.210.10, goes to
# VIP2 and is balanced to 10.20.220.10

Route Health Injection

The CSM supports virtual servers in any IP subnet. If a virtual server is configured in a subnet that is not
directly attached to the MSFC, you can configure the CSM to inject a static route into the MSFC routing
tables, depending on the health of the server farm serving that virtual server.
You can use this mechanism also for disaster recovery or GSLB solutions, where two distinct CSMs
inject a static route for the same VIP. The static routes can then be redistributed, eventually with different
costs, to prefer a specific location.
module ContentSwitchingModule 5
vlan 220 server
ip address 10.20.220.2 255.255.255.0
alias 10.20.220.1 255.255.255.0
!
vlan 221 client
ip address 10.20.221.5 255.255.255.0
gateway 10.20.221.1
alias 10.20.221.2 255.255.255.0
OL-4612-01
Physical Interface
00-02-FC-E1-68-EB
00-02-FC-E1-68-EC
00-D0-B7-A0-68-5D
00-D0-B7-A0-68-5D
00-02-FC-E1-68-EB
00-02-FC-E1-68-EC
00-02-FC-E1-68-EB
00-D0-B7-A0-81-D8
00-02-FC-CB-70-0A
00-02-FC-E1-68-EC
00-D0-B7-A0-81-D8
00-02-FC-E1-68-EB
type prot virtual
SLB TCP
SLB TCP
prot vlan source
TCP 221 10.20.1.100:44240
210 10.20.210.10:23
vs = VIP1, ftp = No, csrp = False
TCP 210 10.20.210.10:45885
220 10.20.220.10:23
vs = VIP2, ftp = No, csrp = False
VLAN Type
210 -ALIAS-
210 --SLB--
210 REAL
210 REAL
220 -ALIAS-
220 --SLB--
0 VSERVER
220 REAL
221 GATEWAY
221 --SLB--
220 REAL
0 VSERVER
10.20.221.100/32:23
10.20.210.100/32:23
destination
10.20.221.100:23
10.20.1.100:44240
10.20.210.100:23
10.20.210.10:45885
Catalyst 6500 Series Content Switching Module Configuration Note
Route Health Injection
Status
local
local
up(0 misses)
up(0 misses)
local
local
local
up(0 misses)
up(0 misses)
local
up(0 misses)
local
vlan state conns
221 OPERATIONAL 1
210 OPERATIONAL 1
state
ESTAB
ESTAB
ESTAB
ESTAB
A-13