Enterasys C5G124-24 User Manual

Port Traffic Rate Limiting
Fixed Switch Configuration Guide 17-17
You can mix WRR and SP by assigning SP to the higher numbered queues and assigning WRR to
the lower numbered queues, making sure that the values assigned to the WRR queues totals 100
percent. For example, you could assign WRR to queues 0 through 4 by assigning 20 percent to
each of those queues, and then setting queue 5 to SP.
Examples
This example shows how to change the arbitration values for the queues belonging to ge.1.1 to
Strict Priority. Note that, although you can’t set queues 6 and 7 with this command, their values
are shown by the show port txq command.
System(su)->set port txq ge.1.1 0 0 0 0 0 100
System(su)->show port txq ge.1.1
Port Alg Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
----- --- --- --- --- --- --- --- --- ---
ge.1.1 STR SP SP SP SP SP SP SP SP
This example shows how to change the arbitration values for the queues belonging to ge.1.1 to
WRR:
System(su)->set port txq ge.1.1 10 10 20 20 20 20
System(su)->show port txq ge.1.1
Port Alg Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
----- --- --- --- --- --- --- --- --- ---
ge.1.1 WRR 10 10 20 20 20 20 SP SP
This example shows how to change the arbitration values for the queues belonging to ge.1.1 to
WRR with SP:
System(su)->set port txq ge.1.1 10 10 20 20 40 SP
System(su)->show port txq ge.1.1
Port Alg Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
----- --- --- --- --- --- --- --- --- ---
ge.1.1 WRR 10 10 20 20 40 SP SP SP
Port Traffic Rate Limiting
Use the set port ratelimit command to limit the rate of inbound traffic on the A4 device on a per
port/priority basis. The allowable range for the rate limiting is 64 kilobytes per second minimum
up to the maximum transmission rate allowable on the interface type.
Rate limit is configured for a given port and list of priorities. The list of priorities can include one,
some, or all of the eight 802.1p priority levels. Once configured, the rate of all traffic entering the
port with the priorities configured to that port is not allowed to exceed the programmed limit. If
the rate exceeds the programmed limit, frames are dropped until the rate falls below the limit.
Rate limiting is disabled by default, both globally and per port.
Note: Priority mode and weight cannot be configured on LAGs, only on the physical ports that make
up the LAG.
Note: This feature applies to the A4 fixed switches only.

Enterasys C5G124-24 Specifications

General

Brand	Enterasys
Model	C5G124-24
Category	Switch
Language	English