276
Chapter 7
Multi-Layer Switching (MLS)
By disabling IP routing on the MSFC or router, you automatically disable
MLS. IP security disables MLS on the interface to which the command is
applied. The same results occur with the IP TCP compression commands.
Finally, the clear ip route command simply clears the MLS cache entries
and the flow caches must be reestablished.
MLS-RP Configuration
T
o fully enable MLS, you must properly configure all participating
devices. This section covers the different configurations and settings that
must be executed on the MLS-RP. Remember, the MLS-RP can be an exter-
nal router, an RSM on a 5000 series switch, or an MSFC on a 6000 series
switch.
We will start with the most basic and essential commands, then move on
to management commands that can be used for verification and trouble-
shooting if necessary.
Enabling MLS
This is the first and foremost command that must be configured on the MLS-
RP. It should be entered in as a global configuration. Because methods differ
between external routers and the MSFC for the 6000 series switches, both
will be discussed.
External Router
For external routers. The command is mls rp ip. Here is an example:
RouterA#conf t
Enter configuration commands, one per line. End with
CNTL/Z.
RouterA(config)#mls rp ip
RouterA(config)#^Z
RouterA#
!
ip subnet-zero
mls rp ip
!
Copyright ©2000 SYBEX , Inc., Alameda, CA
www.sybex.com