Specifications

Configuring IPX Multilayer Switching
IPX MLS Configuration Task List
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Note You can translate input access lists to output access lists to provide the same effect on the
interface.
• Output access lists—When an output access list is applied to an interface, the IPX MLS cache
entries for that interface are purged. Entries associated with other interfaces are not affected; they
follow their normal aging or purging procedures.
Applying access lists that filter according to packet type, source node, source socket, or destination
socket prevents the interface from participating in IPX MLS.
Applying access lists that use the log option prevents the interface from participating in IPX MLS.
• Access list impact on flow masks—Access lists impact the flow mask mode advertised to the
MLS-SE by an MLS-RP. If no access list has been applied on any MLS-RP interface, the flow mask
mode is destination-ipx (the least specific) by default. If an access list that filters according to the
source IPX network has been applied, the mode is source-destination-ipx by default.
Restrictions on Interaction of IPX MLS with Other Features
IPX MLS affects other Cisco IOS software features as follows:
• IPX accounting—IPX accounting cannot be enabled on an IPX MLS-enabled interface.
• IPX EIGRP—MLS is supported for EIGRP interfaces if the Transport Control (TC) maximum is set
to a value greater than the default (16).
Restriction on Maximum Transmission Unit Size
In IPX the two endpoints of communication negotiate the maximum transmission unit (MTU) to be used.
MTU size is limited by media type.
IPX MLS Configuration Task List
To configure one or more routers for IPX MLS, perform the tasks described in the following sections.
The number of tasks you perform depends on your particular configuration.
• Adding an IPX MLS Interface to a VTP Domain (Optional)
• Enabling Multilayer Switching Protocol (MLSP) on the Router (Required)
• Assigning a VLAN ID to a Router Interface (Optional)
• Enabling IPX MLS on a Router Interface (Required)
• Specifying a Router Interface As a Management Interface (Required)
For examples of IPX MLS configurations, see the “IPX MLS Configuration Examples” section later in
this document.