04-Layer 3—IP Services Configuration Guide

HomeSupportResource CenterH3C S6800[S6860][S6861] (R27xx) & S6820 (R630x) Switch Series Configuration Guide-6W10104-Layer 3—IP Services Configuration Guide
13-IPv6 fast forwarding configuration
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13-IPv6 fast forwarding configuration 53.30 KB

Configuring IPv6 fast forwarding

About IPv6 fast forwarding

Fast forwarding reduces route lookup time and improves packet forwarding efficiency by using a high-speed cache and data-flow-based technology. It identifies a data flow by using the following fields:

·     Source IPv6 address.

·     Destination IPv6 address.

·     Source port number.

·     Destination port number.

·     Protocol number.

After a flow's first packet is forwarded through the routing table, fast forwarding creates an entry and uses the entry to forward subsequent packets of the flow.

Configuring the aging time for IPv6 fast forwarding entries

About aging time for IPv6 fast forwarding entries

The IPv6 fast forwarding table uses an aging timer for each forwarding entry. If an entry is not updated before the timer expires, the device deletes the entry. If an entry has a hit within the aging time, the aging timer restarts.

Procedure

1.     Enter system view.

system-view

2.     Set the aging time for IPv6 fast forwarding entries.

ipv6 fast-forwarding aging-time aging-time

By default, the aging time is 30 seconds.

Configuring IPv6 fast forwarding load sharing

About IPv6 fast forwarding load sharing

IPv6 fast forwarding load sharing enables the device to identify a data flow by using the packet information.

If IPv6 fast forwarding load sharing is disabled, the device identifies a data flow by the packet information and the input interface.

Procedure

1.     Enter system view.

system-view

2.     Configure IPv6 fast forwarding load sharing. Choose one option as needed:

¡     Enable IPv6 fast forwarding load sharing.

Ipv6 fast-forwarding load-sharing

¡     Disable IPv6 fast forwarding load sharing.

undo ipv6 fast-forwarding load-sharing

By default, IPv6 fast forwarding load sharing is enabled.

Display and maintenance commands for IPv6 fast forwarding

Execute display commands in any view and reset commands in user view.

 

Task

Command

Display the aging time of the IPv6 fast forwarding entries.

display ipv6 fast-forwarding aging-time

Display IPv6 fast forwarding entries.

display ipv6 fast-forwarding cache [ ipv6-address ] [ slot slot-number ]

Clear the IPv6 fast forwarding table.

reset ipv6 fast-forwarding cache [ slot slot-number ]