Network queue policies in network mode

In the network mode of operation, network queue policies define the network FC queue characteristics. Network queue policies are applied on egress on network and hybrid ports for 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx/S 1/10GE, 7210 SAS-Sx 10/100GE, and 7210 SAS-T operating in network mode. The system allocates a fixed number of queues for the network port, and FCs are mapped to the queues. All policies use a fixed number of queues, like the default network queue policy.

The following is the number of queues allocated for a network queue policy:

• On 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, and 7210 SAS-T, 8 (eight) queues are allocated and 8 (eight) FCs are mapped to the 8 (eight) queues. Table: Forwarding class to queue-ID map lists the FC-to-queue mapping.

• On 7210 SAS-Sx/S 1/10GE and 7210 SAS-Sx 10/100GE, 16 queues are allocated, with 2 queues per FC, one each for unicast traffic and multicast (BUM) traffic. Table: Forwarding class-to-queue ID map for 7210 SAS-Sx/S 1/10GE and 7210 SAS-Sx 10/100GE lists the FC-to-queue mapping.

On 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx/S 1/10GE, 7210 SAS-Sx 10/100GE, and 7210 SAS-T, the network queues on hybrid ports are used for MPLS, IP, and SAP traffic sent out of IP interfaces and SAPs configured on hybrid ports.

The following queue characteristics can be configured on a per-FC basis:

• peak information rate (PIR) as a percentage of egress port bandwidth

• committed information rate (CIR) as a percentage of egress port bandwidth

• committed burst size (CBS) (using the queue-management policies); supported only on the 7210 SAS-Mxp, 7210 SAS-R6 IMM-b, and 7210 SAS-R12 IMM-b

• maximum burst size (MBS) (using the queue-management policies); supported only on the 7210 SAS-Mxp, 7210 SAS-R6 IMM-b, and 7210 SAS-R12 IMM-b

• queue-mode, strict or weighted; supported only on the 7210 SAS-Mxp, 7210 SAS-R6 IMM-b, and 7210 SAS-R12 IMM-b

• adaptation rules for CIR and PIR

• WRED slope parameters

Network queue policies are identified with a unique policy name, which conforms to the standard 7210 SAS alphanumeric naming conventions. The system default network queue policy is named ‟default”

The following table lists the default network queue policy definition for the 7210 SAS-Sx/S 1/10GE, 7210 SAS-Sx 10/100GE, and 7210 SAS-T configured in network mode.

The following table lists the default network queue policy definition for the 7210 SAS-Mxp, 7210 SAS-R6, and 7210 SAS-R12 configured in network mode.