3Com Router 3031, Command Reference Manual

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Fast-forwarding is well-suited to high-speed links (such as Ethernet and FR). Its
function will be render useless, however, on a low-speed link, due to the low
transmission rate such a link can provide.
3Com Series Routers support fast-forwarding on the links of various high-speed
interfaces such as Ethernet, synchronous PPP, FR, and HDLC, on the interfaces
configured with firewall and NAT features, and on the virtual tunnel interface of
GRE as well. However, it should be noted that the interface configured with the
function of fast-forwarding will be unable to send ICMP redirection packets.
Example
Disable the interface to fast forward packets.
[3Com-Ethernet/0/0] undo ip fast-forwarding
Enable the interface to fast forward packets on ingress.
[3Com-Ethernet0/0/0] ip fast-forwarding inbound
reset ip fast-forwarding
cache
Syntax
reset ip fast-forwarding cache
View
User view
Parameter
None
Description
Using the reset ip fast-forwarding cache command, you can reset the
fast-forwarding cache.
This command is used to clear the fast-forwarding cache. The fast-forwarding
table will not contain any fast-forwarding entry after having been cleared.
Example
Clear the fast-forwarding cache.
<3Com> reset ip fast-forwarding cache
reset ip statistics Syntax
reset ip statistics
View
User view
Parameter
None
Description
Using the reset ip statistics command, you can clear the IP statistics information. In
some special cases, it is necessary to clear the IP statistics information and perform
new statistics.