R3303-HP HSR6800 Routers Interface Configuration Guide

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Ste

Command

Remarks

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Configure the Ethernet

interface to operate in

promiscuous mode.

promiscuous

By default, an Ethernet interface does

not operate in promiscuous mode.

Enabling fast forwarding on an Ethernet interface

IMPORTANT:

Enabling or disabling fast forwarding on an Ethernet interface of a SAP module restores all confi

urations

of the interface to the default.

This feature is supported on only routers configured with SAP modules.

Fast forwarding reduces route lookup time and improves packet forwarding efficiency by performing

hardware forwarding. A router uses the routing table to forward the first packet of a flow. Fast forwarding

creates an entry for the flow and uses the entry to forward subsequent packets of the flow.

Follow these guidelines when you enable fast forwarding on Ethernet interfaces:

• Fast forwarding takes effect only when both the receive and send interfaces are on SAP modules

and the two interfaces are enabled with fast forwarding.

• Fast forwarding is supported on only Ethernet interfaces operating in route mode.

To enable fast forwarding on an Ethernet interface:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Enter Ethernet interface view.

interface interface-type

interface-number

N/A

3. Configure the interface to

operate in route mode.

port ilnk-mode route

By default, Ethernet interfaces on SAP

modules operate in route mode.

4. Enable fast forwarding.

ip fast-forwarding By default, fast forwarding is disabled.

When fast forwarding is enabled on an Ethernet interface, the Ethernet interface supports only local

services, IP routing services, and MPLS services, such as NTP, DHCP, Telnet, TFTP, NQA, DNS, SSH, AAA,

QoS, OSPF, BGP, RIP, and IS-IS. The interface does not support other services, such as ASPF, NAT, Portal,

Firewall, IPsec, L2TP, and GRE. You cannot configure these services on the interface.

Displaying and maintaining an Ethernet interface or

subinterface