Cisco GRS User Manual

Configuring the TCP Adjustment Value for the Maximum Segment Size
Perform this task to configure the adjustment value for the maximum segment size (MSS) for the VRF. You
can configure the TCP MSS adjustment value on each VRF.
SUMMARY STEPS
1.
configure
2.
service cgn instance-name
3.
service-type nat44 nat1
4.
inside-vrf vrf-name
5.
protocol tcp
6.
mss size
7.
end or commit
DETAILED STEPS
PurposeCommand or Action
Enters global configuration mode.configure
Example:
RP/0/RP0/CPU0:router# configure
Step 1
Configures the instance named cgn1 for the CGN application
and enters CGN configuration mode.
service cgn instance-name
Example:
RP/0/RP0/CPU0:router(config)# service cgn cgn1
RP/0/RP0/CPU0:router(config-cgn)#
Step 2
Configures the service type keyword definition for CGN
NAT44 application.
service-type nat44 nat1
Example:
RP/0/RP0/CPU0:router(config-cgn)#
service-location preferred-active 0/1/CPU0
preferred-standby 0/4/CPU0
Step 3
Configures the inside VRF for the CGN instance named cgn1
and enters CGN inside VRF configuration mode.
inside-vrf vrf-name
Example:
RP/0/RP0/CPU0:router(config-cgn-nat44)# inside-vrf
insidevrf1
RP/0/RP0/CPU0:router(config-cgn-invrf)#
Step 4
Configures the TCP protocol session and enters CGN inside
VRF AFI protocol configuration mode.
protocol tcp
Example:
RP/0/RP0/CPU0:router(config-cgn-invrf)# protocol
tcp
RP/0/RP0/CPU0:router(config-cgn-invrf-proto)#
Step 5
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
OL-32659-01 41
Implementing Carrier Grade NAT on Cisco IOS XR Software
Configuring the Policy Functions for the Carrier Grade NAT

Cisco GRS Specifications

General

Brand	Cisco
Model	GRS
Category	Network Router
Language	English