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113 | NetworkConfigurationParameters DellPowerConnectW-SeriesArubaOS6.2 | User Guide
The following example shows how to add existing VLAN IDs to a VLAN pool:
(host) #configure terminal
Enter Configuration commands, one per line. End with CNTL/Z
(host) (config) #vlan-name mygroup pool
(host) (config) #vlan mygroup 2,4,12
(host) (config) #
To confirm the VLAN pool status and mappings assignments, use the show vlan mapping command:
(TechPubs650) (config) #show vlan mapping
Vlan Mapping Table
------------------
VLAN Name Pool Status Assignment Type VLAN IDs
--------- ----------- --------------- --------
mygroup Enabled Hash 62,94
newpoolgroup Enabled Even
vlannametest Enabled Even 62,1511
Adding a Bandwidth Contract to the VLAN
Bandwidth contracts on a VLAN can limit broadcast and multicast traffic. ArubaOS includes an internal exception
list to allow broadcast and multicast traffic using the VRRP, LACP, OSPF, PVST and STP protocols. To remove
per-VLAN bandwidth contract limits on an additional broadcast or multicast protocol, add the MAC address for
that broadcast/multicast protocol to the VLAN Bandwidth Contracts MAC Exception List.
The command in the example below adds the MAC address for CDP (Cisco Discovery Protocol) and VTP (Virtual
Trunking Protocol to the list of protocols that are not limited by VLAN bandwidth contracts.
(host) (config) #vlan-bwcontract-explist mac 01:00:0C:CC:CC:CC
To show entries in the VLAN bandwidth contracts MAC exception list, use the
show vlan-bwcontract-explist [internal]command:
(host) (config) #show vlan-bwcontract-explist internal
VLAN BW Contracts Internal MAC Exception List
---------------------------------------------
MAC address
-----------
01:80:C2:00:00:00
01:00:0C:CC:CC:CD
01:80:C2:00:00:02
01:00:5E:00:82:11
Optimizing VLAN Broadcast and Multicast Traffic
Broadcast and Multicast (BCMC) traffic from APs, remote APs, or distributions terminating on the same VLAN
floods all VLAN member ports. This causes critical bandwidth wastage especially when the APs are connected to L3
cloud where the available bandwidth is limited or expensive. Suppressing the VLAN BCMC traffic to prevent
flooding can result in loss of client connectivity.
To effectively prevent flooding of BCMC traffic on all VLAN member ports, use the bcmc-optimization parameter
under the interface vlan command. This parameter ensures controlled flooding of BCMC traffic without
compromising the client connectivity. By default this option is disabled. You must enable this parameter for the
controlled flooding of BCMC traffic.
NOTE: If BCMC Optimization is enabled on uplink ports, the controller-generated Layer-2 packets will be dropped.