Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Switching Configuration Guide
53-1003036-02
About Multi-Chassis Trunk (MCT)
18
By default , MCT acts as a hub for STP, or RSTP. Switches connected to MCT can run STP normally.
When STP, RSTP, or MSTP is enabled, the L2 protocol forwarding configuration is ignored and has
no effect.
To configure L2 protocol forwarding globally, enter a command such as the following.
Brocade(config)#cluster-l2protocol-forward
To disable L2 protocol forwarding on an interface, enter a command such as the following.
Brocade(config-if-e1000-1/2)#cluster-l2protocol-foward disable
To remove L2 protocol forwarding configuration on an interface, enter a command such as the
following
Brocade(config-if-e1000-1/2)#no cluster-l2protocol-foward
Syntax: [no]cluster-l2protocol-forward [enable | disable]
Interface level configuration overwrites the global level configuration.
TABLE 81
L2 protocol forwarding action –MCT switch and non - MCT switch
Protocol
Destination MAC
Non- MCT switch
forwarding action
MCT switch forwarding action
Untagged 802.1Q BPDU
01-80-c2-00-00-00
Flood to the VLAN
Forward to ports that are
enabled by the
cluster-l2protocol-forward
command.
Tagged 802.1Q BPDU
01-80-c2-00-00-00
Flood to the VLAN
Forward to ports that are
enabled by the
cluster-l2protocol-forward
command.
802.1Q Provider BPDU
01-80-c2-00-00-08
Dropped on NetIron
CESand NetIron CER.
Flood to the VLAN on
NetIron XMR and NetIron
MLX
Same as non-MCT switch
802.3 Slow Protocols
(e.g.
LACP)
01-80-c2-00-00-02
Dropped
Same as non-MCT switch
802.1X PAE address
01-80-c2-00-00-03
Dropped
Same as non-MCT switch
802.1Q Provider Bridge
GVRP
01-80-c2-00-00-0D
Flood to the VLAN
Same as non-MCT switch
802.1AB LLDP
01-80-c2-00-00-0E
Flood to the VLAN
Same as non-MCT switch
802.1D GMRP
01-80-c2-00-00-20
Flood to the VLAN
Same as non-MCT switch
802.1Q GVRP
01-80-c2-00-00-21
Flood to the VLAN
Same as non-MCT switch
Foundry MRP ( Metro
Ring
Protocol)
03-04-80-00-00-00
Flood to the VLAN
Same as non-MCT switch
Foundry FDP (Foundry
Discovery Protocol)
01-e0-52-cc-cc-cc
Flood to the VLAN
Same as non-MCT switch
CDP
01-00-00-cc-cc-cc
Flood to the VLAN
Same as non-MCT switch
PVST
01-00-0c-cc-cc-cd
Flood to the VLAN
Same as non-MCT switch