H3C Technologies H3C S12500 Series Switches - Manual (Page 162)

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Configuring IPv6 fast forwarding
The device operates in IRF or standalone (the default) mode. For information about IRF mode, see IRF
Configuration Guide.
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Overview
Fast forwarding reduces route lookup time and improves packet forwarding efficiency by using a
high-speed cache and data-flow-based technology. It uses a six-tuple (source IPv6 address, destination
IPv6 address, source port number, destination port number, protocol number, and VPN instance name)
to identify a data flow. After the first packet of a flow is forwarded through the routing table, fast
forwarding creates an entry for the flow and uses the entry to forward subsequent packets of the flow.
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Configuration procedure
To configure IPv6 fast forwarding:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enable IPv6 fast forwarding. ipv6 fast-forwarding
By default, IPv6 fast forwarding is
enabled.
3. Set the aging time of IPv6 fast
forwarding entries. ipv6 fast-forwarding
aging-time aging-time
By default, the aging time of IPv6 fast
forwarding entries is 30 seconds.
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Displaying and maintaining IPv6 fast forwarding
Execute display commands in any view and reset commands in user view.
Task Command
Display IPv6 fast forwarding table information (in
standalone mode). display ipv6 fast-forwarding cache [ ipv6-address ]
[ slot slot-number ]
Display IPv6 fast forwarding table information (in IRF
mode). display ipv6 fast-forwarding cache [ ipv6-address ]
[ chassis chassis-number slot slot-number ]
Display the aging time of the IPv6 fast forwarding
entry.
display ipv6 fast-forwarding aging-time
Clear IPv6 fast forwarding table information (in
standalone mode).
reset ipv6 fast-forwarding cache [ slot slot-number ]
Clear IPv6 fast forwarding table information (in IRF
mode). reset ipv6 fast-forwarding cache [ chassis
chassis-number slot slot-number ]