Connectivity Guide

Command Mode INTERFACE VLAN
Usage Information To congure the VLAN scale prole, use the scale-profile vlan command. The scale prole globally applies
L2 mode on all VLANs you create and disables L3 transmission. To enable L3 routing trac on a VLAN, use the
mode L3 command.
Example
OS10(config)# interface vlan 10
OS10(conf-if-vl-10)# mode L3
Supported Releases 10.4.0E(X2) or later
mtu
Sets the link maximum transmission unit (MTU) frame size for an Ethernet L2 or L3 interface.
Syntax
mtu value
Parameters value — Enter the maximum frame size in bytes, from 1280 to 65535.
Default 1532 bytes
Command Mode INTERFACE
Usage Information
To return to the default MTU value, use the no mtu command. If an IP packet includes a L2 header, the IP MTU
must be at least 32 bytes smaller than the L2 MTU.
• Port-channels
– All members must have the same link MTU value and the same IP MTU value.
– The port channel link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values you
congure on the channel members. For example, if the members have a link MTU of 2100 and an IP MTU
2000, the port channel’s MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU.
• VLANS
– All members of a VLAN must have same IP MTU value.
– Members can have dierent link MTU values. Tagged members must have a link MTU four bytes higher
than untagged members to account for the packet tag.
– The VLAN link MTU and IP MTU must be less than or equal to the link MTU and IP MTU value you
congure on the VLAN members. For example, the VLAN contains tagged members with a link MTU of
1522 and IP MTU of 1500 and untagged members with link MTU of 1518 and IP MTU of 1500. The VLAN’s
link MTU cannot be higher than 1518 bytes and its IP MTU cannot be higher than 1500 bytes.
Example
OS10(conf-if-eth1/1/7)# mtu 3000
Supported Releases 10.2.0E or later
port mode Eth
Congures a Z9264F-ON QSFP28 port group to operate in Ethernet mode, with the specied speed on activated interfaces.
Syntax
port node/slot/port mode Eth port-mode
Parameters
• node/slot/port — Enter the interface type details.
• mode Eth — Congure a port group in Ethernet mode and set the speed to:
– 100g-1x — Reset a port to 100GE mode.
184 Interfaces