Accedian EtherNID GE, Руководство администратора

Страница: 70 / 166

5: Monitoring and filtering Layer-2 Protocol Tunneling
70
Layer-2 Protocol Tunneling
The Layer-2 Protocol Tunneling feature allows the customer's layer-2 control protocol (L2CP)
frames to be transparently transported across an EVC without interfering with the
carrier/operator network and equipment. The protocol tunneling operates by replacing the
protocol's specific destination MAC address with a multicast address that is transparently
transported by the transit equipment, and reinserting the original destination MAC when the
traffic reaches the destination equipment. A total of 64 L2PT rules can be defined.
Name
Unique name assigned to the rule.
State
The state of the rule, enabled or disabled.
Protocol
The Layer-2 Control Protocol to be processed by the rule.
Mode
The current mode of operation of the rule. Four modes of operation are available:
• Drop: frames matching the specific rule are dropped.
• Forwarding: frames are sent unaltered to and from the specified ports (both ways).
• Tunneling: frames matching the specific rule get their destination MAC address replaced
by the MAC specified in the rule's parameters when ingressing the specified client port.
Frames matching the specific rule get their original destination MAC address put back
when ingressing the specified network port.
• Peering: the frames are sent to software layers for further processing.
Incoming port
The incoming port that is used by the rule. The incoming port is considered to be the port
where the layer-2 control protocols will ingress.
Outgoing port
The outgoing port that is used by the rule. The outgoing port is considered to be the port
where the tunneled frames, containing a replacement destination MAC, will egress.