ATL Telecom R1-SW Ethernet Switch - Manual (Page 184)

R1-SW24L2B User’s Manual
9-16
Marking & Remarking
Marking is a way to identify packet flows to differentiate them. Packet marking allows you to
partition your network into multiple priority levels or classes of service.
The Corecess R1-SW24L2B supports marking based on the following bits in the CoS (Class of
Service) filed for the packet:
y DSCP value
y CoS value
y VLAN priority
Policing
The Corecess R1-SW24L2B supports Policing. Policing is the process by which the system limits
the bandwidth consumed by a flow of traffic. You can limit the bandwidth of a specific traffic
flow by using a policy map or limit the full bandwidth of a port.
Transmit Queue
The Corecess R1-SW24L2B provides eight transmit queues for each engress port. These transmit
queues are scheduled by the Strict Priority Queueing (SPQ) mechanism. You can use the
following value to determine queue priority:
y User ’s priority (The value that is set by using the priority command in Policy-map class configuration
mode)
y DSCP
y CoS
y VLAN priority
When the transmit queue is full, frames at the end of the queue are dropped (tail drop).