Limiting The Number Of Mac Addresses Learned From An Interface - Juniper EX9200 Features Manual

VPLS Feature Guide for EX9200 Switches

Limiting the Number of MAC Addresses Learned from an Interface

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[edit logical-systems logical-system-name routing-instances routing-instance-name
protocols vpls]
NOTE: ACX Series routers do not support the
When you include the
mac-table-size
interfaces within the VPLS routing instance, including the local interfaces, the LSI
interfaces, and the VT interfaces.
You can configure a limit on the number of MAC addresses learned by a VPLS routing
instance using the
mac-table-size
addresses can no longer be added to the table. Eventually the oldest MAC addresses are
removed from the MAC address table automatically. This frees space in the table, allowing
new entries to be added. However, as long as the table is full, new MAC addresses are
dropped.
Because this limit applies to each VPLS routing instance, the MAC addresses of a single
interface can consume all the available space in the table, preventing the routing instance
from acquiring addresses from other interfaces.
You can limit the number of MAC addresses learned from each interface configured for
a VPLS routing instance. To do so, include the
interface-mac-limit limit;
You can include this statement at the following hierarchy levels:
[edit routing-instances routing-instance-name protocols vpls]
[edit logical-systems logical-system-name routing-instances routing-instance-name
protocols vpls]
The statement affects the local interfaces only (the interfaces facing
interface-mac-limit
CE devices).
Configuring the
interface-mac-limit
routing-instance-name protocols vpls]
to all of the interfaces configured for that specific routing instance.
[edit logical-systems]
statement, the affected interfaces include all
statement. If the MAC table limit is reached, new MAC
interface-mac-limit
statement at the
[edit routing-instances
hierarchy level causes the same limit to be applied
Copyright © 2016, Juniper Networks, Inc.
hierarchy.
statement: