Cisco ASR 9000 Series Reference Guide

mtu (GRE)
To set the MTU size of the tunnel interface, use the mtu command in interface configuration mode. To undo
the MTU size of the tunnel interface that is set, use the no form of this command.
This is a Generic Routing Encapsulation (GRE) command.
mtu size
no mtu size
Syntax Description
Size of MTU in bytes. The default value is 1500.
size
Command Default
None
Command Modes
Interface configuration
Command History
ModificationRelease
This command was introduced.Release 4.2.0
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
Task ID
OperationTask ID
read, writeinterface
Examples
This example shows how to set the MTU size of the tunnel interface:
RP/0/RSP0/CPU0:router# configure
RP/0/RSP0/CPU0:router(config)# interface tunnel-ip 456
RP/0/RSP0/CPU0:router(config-if)# mtu 334
Cisco ASR 9000 Series Aggregation Services Router VPN and Ethernet Services Command Reference, Release
6.1.x
41
Generic Routing Encapsulation Commands
mtu (GRE)

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model