From: Daniel C. Young (danyoung99@xxxxxxxxxxxx)
Date: Tue Aug 07 2001 - 02:34:16 GMT-3
Group,
Question #2 on Fatkid Lab 461:
R4 and R2 are used to support WAN connections only for the Ethernet network.
Take corrective steps to limit the amount of packets that will accumulate in
the serial port output buffers, if the Ethernet segment is sending a great
deal of traffic to R1.
Solution:
'no ip route-cache
Explanation:
Normally a Cisco router will do fast switching on an interface after
processing the first packet in a data stream. Fast switching a type of layer
three switching, that allows Cisco routers to achieve very high performance
without extremely high speed processors.? If you disable fast switching you
slow the router down because every packet must be inspected by the CPU and
routed conventionally.
Isn't there a better way to do this? I was thinking of configuring CAR on
the ethernet interface for incoming traffic, which will limit the rate of
incoming traffic thereby reducing the amount of packets that will accumulate
on the slow link's serial interface buffers, such as:
Interface Ethernet0
traffic-rate input 64000 10000000
Can I get any yeas or neas?
Daniel C. Young
Sr. Network Engineer
CCNP (ATM, Security & Voice Specialist),
CCDP, CCSE, MCSE+I
SBC Internet Data Center
(949) 221-1928 Work
(714) 350-8945 Cell
young@pobox.com
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