Configuring The Tcp Adjustment Value For The Maximum Segment Size - Cisco GRS Configuration Manual

Implementing Carrier Grade NAT on Cisco IOS XR Software

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
Command or Action
Step 1 configure
Example:
RP/0/RP0/CPU0:router# configure
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-type nat44 nat1
Example:
RP/0/RP0/CPU0:router(config-cgn)#
service-location preferred-active 0/1/CPU0
preferred-standby 0/4/CPU0
Step 4 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 5
protocol tcp
Example:
RP/0/RP0/CPU0:router(config-cgn-invrf)# protocol
tcp
RP/0/RP0/CPU0:router(config-cgn-invrf-proto)#
OL-32659-01
Enters global configuration mode.
Configures the instance named cgn1 for the CGN application
and enters CGN configuration mode.
Configures the service type keyword definition for CGN
NAT44 application.
Configures the inside VRF for the CGN instance named cgn1
and enters CGN inside VRF configuration mode.
Configures the TCP protocol session and enters CGN inside
VRF AFI protocol configuration mode.
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
Configuring the Policy Functions for the Carrier Grade NAT
Purpose
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