configure ports
ExtremeWare 7.7 Command Reference Guide
271
configure ports
configure ports [<portlist> vlan <vlan name> | all] [limit-learning
<number> | lock-learning | unlimited-learning | unlock-learning]
Description
Configures virtual ports for limited or locked MAC address learning.
Syntax Description
Default
Unlimited, unlocked learning.
Usage Guidelines
On a modular switch,
<portlist>
can be a list of slots and ports. On a stand-alone switch,
<portlist>
can be one or more port numbers. For a detailed explanation of port specification, see “Modular Switch
Numerical Ranges” or “Stand-alone Switch Numerical Ranges” in Chapter 1.
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
create
fdbentry
and
delete fdbentry
commands. These override any dynamically learned entries.
For ports that have a learning limit in place, the following traffic will still flow to the port:
•
Packets destined for permanent MACs and other non-blackholed MACs
•
Broadcast traffic
portlist
Specifies one or more ports or slots and ports. On a modular switch, can be a list of
slots and ports. On a stand-alone switch, can be one or more port numbers. May be in
the form 1, 2, 3-5, 2:*, 2:5, 2:6-2:8.
all
Specifies that all virtual ports should be configured as indicated.
vlan name
Specifies the name of the VLAN.
limit-learning <number>
Specifies a limit on the number of MAC addresses that can be dynamically learned on
the specified ports.
lock-learning
Specifies that the current FDB entries for the specified ports should be made
permanent (static), and no additional learning should be allowed.
unlimited-learning
Specifies that there should not be a limit on MAC addresses that can be learned.
unlock-learning
Specifies that the port should be unlocked (allow unlimited, dynamic learning).
Summary of Contents for ExtremeWare 7.7
Page 60: ...60 ExtremeWare 7 7 Command Reference Guide Contents ...
Page 72: ...72 ExtremeWare 7 7 Command Reference Guide Command Reference Overview ...
Page 404: ...404 ExtremeWare 7 7 Command Reference Guide VLAN Commands ...
Page 472: ...472 ExtremeWare 7 7 Command Reference Guide QoS Commands ...
Page 492: ...492 ExtremeWare 7 7 Command Reference Guide NAT Commands ...
Page 890: ...890 ExtremeWare 7 7 Command Reference Guide Security Commands ...
Page 1130: ...1130 ExtremeWare 7 7 Command Reference Guide Security Commands ...
Page 1164: ...1164 ExtremeWare 7 7 Command Reference Guide Configuration and Image Commands ...
Page 1436: ...1436 ExtremeWare 7 7 Command Reference Guide Wireless Commands ...
Page 1490: ...1490 ExtremeWare 7 7 Command Reference Guide EAPS Commands ...
Page 1576: ...1576 ExtremeWare 7 7 Command Reference Guide ESRP Commands ...
Page 1774: ...1774 ExtremeWare 7 7 Command Reference Guide IP Unicast Commands ...
Page 1914: ...1914 ExtremeWare 7 7 Command Reference Guide IGP Commands ...
Page 2000: ...2000 ExtremeWare 7 7 Command Reference Guide BGP Commands i Series Switches Only ...
Page 2140: ...2140 ExtremeWare 7 7 Command Reference Guide IPX Commands i Series Platforms Only ...
Page 2156: ...2156 ExtremeWare 7 7 Command Reference Guide ARM Commands BlackDiamond Switch Only ...
Page 2168: ...2168 ExtremeWare 7 7 Command Reference Guide Remote Connect Commands ...
Page 2346: ...2346 ExtremeWare 7 7 Command Reference Guide PoS Commands BlackDiamond Switch Only ...
Page 2446: ...2446 ExtremeWare 7 7 Command Reference Guide LLDP Commands ...
Page 2496: ...2496 ExtremeWare 7 7 Command Reference Guide H VPLS Commands BlackDiamond Switch Only ...
Page 2620: ...2620 ExtremeWare 7 7 Command Reference Guide Index of Commands ...
