Cisco Cisco Packet Data Interworking Function (PDIF) Prospecto
Ethernet Interface Configuration Mode Commands
ip mtu ▀
Cisco ASR 5x00 Command Line Interface Reference ▄
3501
ip mtu
Configures the Maximum Transmission Unit (MTU) for this IP interface.
Product
All
Privilege
Security Administrator, Administrator
Mode
Exec > Global Configuration > Context Configuration > Ethernet Interface Configuration
configure > context context_name > interface interface_name broadcast
Entering the above command sequence results in the following prompt:
[context_name]host_name(config-if-eth)#
Syntax
[ no ] ip mtu mtu-size
no
Removes the MTU value.
mtu-size
Specifies the MTU in bytes as an integer from 576 though 2048.
Usage
IP MTU is supported for a normal interface and point-to-point interface (OLC ports).
The maximum MTU size allowed with an OLC port is 1600.
The maximum MTU size allowed with an Ethernet port is 2048. The default MTU size is 1500.
The maximum sizes for ethernet MTUs are:
The maximum MTU size allowed with an OLC port is 1600.
The maximum MTU size allowed with an Ethernet port is 2048. The default MTU size is 1500.
The maximum sizes for ethernet MTUs are:
Untagged traffic (non-VLAN) – ip MPU mtu-size + ethernet header (20 bytes)
VLAN traffic – ip MPU mtu-size + ethernet header (20 bytes) + vlan header (4 bytes)
Example
The following command sets the MTU value to
2048
.
ip mtu 2048