Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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Use to set the length of time, in seconds, that a dynamic (learned) MAC address
entry can remain in a specified bridge group’s forwarding table.
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When a dynamic entry reaches its configured aging time, it “ages out” of the
forwarding table.
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The default aging time is 300 seconds.
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The aging-time range is 1–1000000 seconds.
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Example
host1(config)# bridge westford04 aging-time 1000
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Use the no version to restore the default value, 300 seconds.
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See bridge aging-time.
bridge learn
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Use to set the maximum number of dynamic (learned) MAC address entries that
a specified bridge group can learn.
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For information about the maximum number of learned MAC address entries
combined for all bridge groups on an E Series router, see
JUNOSe Release Notes,
Appendix A, System Maximums.
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The default value is 0 (zero) learned addresses. This default implies that there is
no maximum number of learned entries for an individual bridge group; that is,
an individual bridge group can learn an unlimited number of MAC addresses,
up to the maximum number that the router supports.
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Example
host1(config)# bridge westford05 learn 2000
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Use the no version to restore the default value, 0 (zero) learned addresses.
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See bridge learn.
bridge snmp-trap link-status
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Use to enable SNMP link status processing for a specified bridge group and to
enable SNMP traps for all bridge interfaces configured in the bridge group.
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Example
host1(config)# bridge westford06 snmp-trap link-status
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Use the no version to disable SNMP link status processing for the bridge group.
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See bridge snmp-trap link-status.
Configuring Bridge Group Interfaces
To configure a bridge group interface:
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Configuration Tasks
JUNOSe 11.1.x Link Layer Configuration Guide