L2CP Processing Supported L2CP Protocols
Supported L2CP Protocols
IEEE 802.1 defines L2CP Reserved MAC addresses in a range from 01-80-C2-00-00-00 to
01-80-C2-00-00-2F. ML systems support control only on those addresses, which are already
assigned by IEEE 802.1 standard of defined and working protocols: 01-80-C2-00-00-00 to
01-80-C2-00-00-0F , 01-80-C2-00-00-10 , 01-80-C2-00-00-20 to 01-80-C2-00-00-21.
All other future-use reserved MAC addresses in the range are handled as regular traffic, i.e.
accepted, dropped or modified according to VLAN membership of the port and received
frame format.
ML systems additionally allow control on Cisco Reserved MAC addresses per each port
separately, supporting Layer 2 Cisco Frames (like PVST+, CDP, ISL) behavior control.
Initially, the ML system handles Cisco Reserved MAC addresses as a regular traffic, i.e.
Cisco frames are accepted, dropped or modified according to VLAN membership of the port
and received frame format. To change the behavior, and enable per ML port control over
Cisco Reserved MAC addresses, change checkbox configuration on L2CP table pane.
Three dedicated MAC Addresses are handled as configured. These are:
ISL 01-00-0C-00-00-00
CDP 01-00-0C-CC-CC-CC
PVST 01-00-0C-CC-CC-CD
All other MAC in "X" range will behave as regular traffic, i.e. they will be accepted, dropped
or modified according to VLAN membership of the port and received frame format.
The following L2CP MAC application-protocols are supported with PEER handler:
STP (on page 5-20)
OAM
LLDP (on page 5-7)
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