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Configuring Dual Stack Lite Instance
Command or Action
Step 2
service cgn instance-name
Example:
RP/0/RP0/CPU0:router(config)# service cgn cgn1
RP/0/RP0/CPU0:router(config-cgn)#
Step 3
service-location preferred-active node-id [preferred-standby
node-id]
Example:
RP/0/RP0/CPU0:router(config-cgn)# service-location
preferred-active 0/2/CPU0 preferred-standby 0/4/CPU0
Step 4
service-type ds-lite instance
Example:
RP/0/RP0/CPU0:router(config-cgn)# service-type ds-lite
dsl1
Step 5
portlimit value
Example:
RP/0/RP0/CPU0:router(config-cgn)# service-type ds-lite
dsl1
Step 6
bulk-port-alloc size value
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)#
bulk-port-alloc size 128
Step 7
map address-pool address
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)# map
address-pool 52.52.52.0/24
Step 8
aftr-tunnel-endpoint-address <address>
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)#
aftr-tunnel-endpoint address 3001:DB8:EOE:E01::
Step 9
address-family ipv4
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite)# address-family
ipv4
Step 10
interface ServiceApp41
Example:
RP/0/RP0/CPU0:router(config-cgn-ds-lite-afi)# interface
ServiceApp41
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
78
Implementing Carrier Grade NAT on Cisco IOS XR Software
Purpose
Configures the instance named cgn1 for the CGN
application and enters CGN configuration mode.
Specifies the global command applied per cgn
instance. It initiates the particular instance of the cgn
application on the active and standby locations.
Configures the service type keyword definition for
the DS LITE application.
Configures the service type keyword definition for
the DS LITE application.
Enables bulk port allocation and sets bulk size that is
used to reduce logging data volume.
Specifies the address pool for the DS LITE instance.
Note
52.52.52.0/24 is the IPv4 public address pool
assigned to the DS Lite instance.
Specifies the IPv6 address of the tunnel end point.
The IPv4 elements must address their IPV6 packets
to this address.
Enters the address family IPv4 configuration mode.
Specifies the ServiceApp on which IPv4 traffic enters
and leaves.
OL-32659-01
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