Configure Ports Limit-Learning Lock-Learning - Extreme Networks ExtremeWare XOS Command Reference Manual

configure ports limit-learning lock-learning

configure ports <portlist> vlan <vlan name> [limit-learning <number> |
lock-learning | unlimited-learning | unlock-learning]
Description
Configures virtual ports for limited or locked MAC address learning.
Syntax Description
portlist
vlan name
limit-learning <number>
lock-learning
unlimited-learning
unlock-learning
Default
Unlimited, unlocked learning.
Usage Guidelines
If you have enabled ESRP, see the ExtremeWare XOS Concepts Guide for information about using this
feature with ESRP.
Limited learning. The limited learning feature allows you to limit the number of dynamically-learned
MAC addresses per VLAN. When the learned limit is reached, all new source MAC addresses are
blackholed at both the ingress and egress points. This prevent these MAC addresses from learning and
responding to Internet control message protocol (ICMP) and address resolution protocol (ARP) packets.
If the limit you configure is greater than the current number of learned entries, all the current learned
entries are purged.
Dynamically learned entries still get aged, and can be cleared. If entries are cleared or aged out after the
learning limit has been reached, new entries will then be able to be learned until the limit is reached
again.
Permanent static and permanent dynamic entries can still be added and deleted using the
and
fdbentry delete fdbentry
ExtremeWare XOS 11.3 Command Reference
Specifies one or more ports or slots and ports.
Specifies the name of the VLAN.
Specifies a limit on the number of MAC addresses that can be dynamically
learned on the specified ports.
Specifies that the current FDB entries for the specified ports should be made
permanent static, and no additional learning should be allowed.
Specifies that there should not be a limit on MAC addresses that can be
learned.
Specifies that the port should be unlocked (allow unlimited, dynamic learning).
commands. These override any dynamically learned entries.
configure ports limit-learning lock-learning
create
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