Cisco Cisco IOS Software Release 12.4(3)
Scalability for Stateful NAT
Configuration Examples for SNAT in HSRP Mode
4
Cisco IOS Release: Multiple releases (see the Feature History table)
Configuration Examples for SNAT in HSRP Mode
This section provides the following configuration example:
Configuring SNAT in HSRP Mode: Example
Step 6
standby
[group-number] name group-name
Example:
Router(config-if)# standby name SNATHSRP
Configures the name of an HSRP group.
Step 7
standby
group-number preempt delay minimum
seconds reload seconds sync seconds
Example:
Router(config-if)# standby 1 preempt delay
minimum 60 reload 60 sync 60
This command must be configured in order for SNAT to
control HSRP state change until NAT information is
completely exchanged.
control HSRP state change until NAT information is
completely exchanged.
Step 8
exit
Example:
Router(config-if)# exit
Returns to global configuration mode.
Step 9
ip nat stateful id
id-number redundancy name
mapping-id
map-number [protocol udp]
[as-queuing disable]
Example:
Router(config)# ip nat stateful id 1 redundancy
snathsrp mapping-id 10 protocol udp as-queuing
disable
Specifies SNAT on routers configured for HSRP. The
optional UDP protocol and disabling of asymmetic queuing
is also configured.
optional UDP protocol and disabling of asymmetic queuing
is also configured.
Step 10
ip nat pool
name start-ip end-ip prefix-length
prefix-length
Example:
Router(config)# ip nat pool snatpool1 10.1.1.1
10.1.1.9 prefix-length 24
Defines a pool of IP addresses.
Step 11
ip nat inside source route-map
name pool
pool-name mapping-id map-number [overload]
Example:
Router(config)# ip nat inside source route-map
rm-101 pool snatpool1 mapping-id 10 overload
Enables stateful NAT for the HSRP translation group.
Command or Action
Purpose