Hi,
Brief:
Fast switching is as follows, 1st packet is processed switched, 2 packet to
destination is fast switched. i.e. it never goes through the cpu.
L3 switching , MLS, Multi layer switching, This is based on traffic flows,
ie we could swich on a certain tcp flow, or certain source/detination and
destination port. as defined by access lists.
The three flow masks are as follows:
destination-ip—The least-specific flow mask. The MLS-SE maintains one MLS
entry for each destination IP address. All flows to a given destination IP
address use this MLS entry. This mode is used if there are no access lists
configured on any of the MLS-RP interfaces.
source-destination-ip—The MLS-SE maintains one MLS entry for each source and
destination IP address pair. All flows between a given source and
destination use this MLS entry regardless of the IP protocol ports. This
mode is used if there is a standard access list on any of the MLS-RP
interfaces.
ip-flow—The most-specific flow mask. The MLS-SE creates and maintains a
separate MLS cache entry for every IP flow. An ip-flow entry includes the
source IP address, destination IP address, protocol, and protocol ports.
This mode is used if there is an extended access list on any of the MLS-RP
interfaces.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_2/layer3/m
ls.htm#xtocid171391
http://www.cisco.com/warp/customer/473/55.html
/Stuart.
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| | Stuart Potts
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-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Dove
Sent: Wednesday, March 07, 2001 7:02 AM
To: [EMAIL PROTECTED]
Subject: Confuse about Fast Switching and Layer 3 switching
Hi,
I have some confuse about the "Fast Switching" and "Layer 3 switching". Both
of them are mentioned that route first packet and switch others. Could
anyone please help me?
Regards.
dovelet
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