About Policy-Based Cos Configurations - Enterasys SecureStack C2 Configuration Manual

Configuring Policy Class of Service (CoS)
Enterasys Networks' enhanced CoS implementation allows you to use the following methods to
configure Class of Service on the SecureStack C2:
• Allowing the switch to automatically assign policy‐based inbound rate limiters as described
in this section.
• Configuring transmit queueing and rate limiting on a per‐port basis as described in
Chapter
By default, policy‐based CoS is disabled on the device, and default or user‐assigned port‐based
802.1D (802.1p) settings are used to determine traffic rate limiting. When policy‐based CoS is
enabled, the default and user‐assigned policy‐based settings will override port‐based settings
described in Chapter

About Policy-Based CoS Configurations

Once enabled using the set cos state command as described in "set cos state" on page 9‐18, you
can add to the policy‐based CoS function by defining new port groupings, and assigning inbound
rate limiters. The process for user‐defined CoS configuration involves the following steps and
associated commands listed in Procedure
Procedure 9-1 User-Defined CoS Configuration
Step
1.
2.
3.
4.
5.
Example
This example creates different inbound rate limiters for two port groups and then assigns them to
traffic with a CoS setting of 0.
1. Configure two port groups, one for user ports and one for uplink ports and assign ports to the
groups. Port group 1.0 will represent user ports, group 2.0 will represent uplink ports.
C2(su)->set cos port-config irl 1.0 name Users ports ge.1.1-46
C2(su)->set cos port-config irl 2.0 name Uplink ports ge.1.47-48
C2(su)->show cos port-config
Inbound Rate Limiting Port Configuration Entries
----------------------------------------------------------------------
Port Group Name
Port Group
Port Type
Assigned Ports
----------------------------------------------------------------------
Port Group Name
Port Group
Port Type
Assigned Ports
----------------------------------------------------------------------
Port Group Name
Port Group
9-16 Policy Classification Configuration
10.
10.
Task
Enable CoS
Create CoS port groups
Define physical rate limiters for groups
Create virtual reference for the IRL resource
(physical reference) for each port group
Add IRL reference to CoS settings table
:Default
:0
:0
:none
:Users
:1
:0
:ge.1.1-46
:Uplink
:2
9‐1. An example follows the procedure.
Command(s)
set cos state
set cos port-config
set cos port-resource
set cos reference
set cos settings