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Configuring Layer 2 Circuit (NSM Procedure)
Configuring Local Interface Switching (NSM Procedure)
Copyright © 2010, Juniper Networks, Inc.
Add or modify settings as specified in Table 135 on page 257.
4.
Click one:
5.
OK—Saves the changes.
Cancel—Cancels the modifications.
Table 135: L2 Learning Configuration Details
Task
Configure Layer 2 address
learning and forwarding
properties globally.
Limit the number of media
access control (MAC)
addresses learned from the
logical interfaces on the
router.
Configuring Layer 2 Circuit (NSM Procedure) on page 257
Configuring Layer 2 Protocol Tunneling and BPDU Protection (NSM Procedure) on
page 262
You can enable a Layer 2 circuit using the L2 Circuit option. See the following topics:
Configuring Local Interface Switching (NSM Procedure) on page 257
Configuring the Neighbor Interface for the Layer 2 Circuit (NSM Procedure) on page 258
Tracing Layer 2 Circuit Creation and Changes (NSM Procedure) on page 261
You can configure a virtual circuit entirely on the local router, terminating the circuit on
a local interface. Possible uses for this feature include being able to enable switching
between frame relay Data-Link Connection Identifier (DLCI)s.
To configure local interface switching in NSM:
Your Action
1.
In the Comment box, enter the comment.
2.
From the Global Mac Table Aging Time list, select the time
elapsed before MAC table entries are timed out and entries
are deleted.
Range : 10 through 1000000
3.
Select one of the following:
Global No Mac Learning—To disable MAC learning for the
entire router
Global Mac Statistics—To enable MAC accounting for
the entire router.
1.
Click Global Mac Limit next to L2 Learning.
2.
In the Comment box, enter the comment.
3.
From the Mac Limit list, select the Number of MAC addresses
that can be learned systemwide.
Range: 20 through 1,048,575
4.
From the Packet Action list, select drop to specify that
packets for new source MAC addresses be dropped after the
MAC address limit is reached.
Chapter 20: Configuring Protocols
257
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