Cisco ASR 9000 Series Command Reference

Changing the MTU value (with the mtu interface configuration command) can affect the IPv6 MTU value.
If the current IPv6 MTU value is the same as the MTU value, and you change the MTU value, the IPv6
MTU value will be modified automatically to match the new MTU. However, the reverse is not true;
changing the IPv6 MTU value has no effect on the value for the mtu command.
Note
Task ID
OperationsTask ID
read, writeipv6
read, writenetwork
read, writeconfig-services
Examples
This example (not applicable for BNG) shows how to set the maximum IPv6 packet size for GigabitEthernet
interface 0/1/1/0 to 1350 bytes:
RP/0/RSP0/CPU0:router(config)# interface gigabitethernet 0/1/1/0
RP/0/RSP0/CPU0:router(config-if)# ipv6 mtu 1350
For BNG, this example shows how to set the maximum IPv6 packet size to 1350 bytes in the dynamic template
configuration mode:
RP/0/RSP0/CPU0:router(config)# dynamic-template type ppp foo
RP/0/RSP0/CPU0:router(config-dynamic-template-type)# ipv6 mtu 1350
Related Commands
DescriptionCommand
Displays the usability status of interfaces configured
for IPv6.
show ipv6 interface (BNG), on page 317
Cisco ASR 9000 Series Aggregation Services Router Broadband Network Gateway Command Reference, Release
5.2.x
309
IPv4 and IPv6 Commands
ipv6 mtu (BNG)

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