Enabling Bridging On An Ethernet Interface; Configuring A Layer 3 Ethernet Interface; Setting The Mtu For An Ethernet Interface - H3C S7500E-XS Series Interface Configuration Manual

•
Typically, set the MDIX mode of the interface to AutoMDIX. Set the MDIX mode of the interface
to MDI or MDIX only when the device cannot determine the cable type.
•
When a straight-through cable is used, configure the interface to operate in an MDIX mode
different than its peer.
•
When a crossover cable is used, perform one of the following operations:
Configure the interface to operate in the same MDIX mode as its peer.
Configure either end to operate in AutoMDIX mode.
To set the MDIX mode of an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Set the MDIX mode of the
Ethernet interface.

Enabling bridging on an Ethernet interface

When a packet arrives at an interface, the switch looks up the destination MAC address of the packet
in the MAC address table. If the outgoing interface of the entry found is the same as the incoming
interface, the switch drops the packet. To enable the switch to forward such packets rather than drop
them, enable bridging on the Ethernet interface.
If no entry is found for the destination MAC address, the switch sends an ARP packet out of all
interfaces except the incoming interface. To enable the switch to send the ARP packet out of the
incoming interface, enable bridging on the Ethernet interface.
To enable bridging on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Enable bridging on the
Ethernet interface.

Configuring a Layer 3 Ethernet interface

Setting the MTU for an Ethernet interface

The maximum transmission unit (MTU) of an Ethernet interface affects the fragmentation and
reassembly of IP packets on the interface. Typically, you do not need to modify the MTU of an
interface.
To set the MTU for an Ethernet interface:
Step
1. Enter system view.
Command
system-view
interface interface-type
interface-number
mdix-mode { automdix | mdi |
mdix }
Command
system-view
interface interface-type
interface-number
port bridge enable
Command
system-view
16
Remarks
N/A
N/A
By default, a copper Ethernet
interface operates in auto mode to
negotiate pin roles with its peer.
Remarks
N/A
N/A
By default, bridging is disabled
on the Ethernet interface.
Remarks
N/A