QoS shapers and shaper QoS policies

The following examples illustrate the CLI syntax to apply a shaper policy to an MDA and a hybrid port (access and network egress).

CLI syntax:

config>card>mda#
    access 
        ingress
            shaper-policy policy-name

CLI syntax:

config>port>ethernet#
    egress-rate sub-rate 
    mode hybrid 
    access 
        egress
            shaper-policy policy-name
            unshaped-sap-cir cir-rate
    network 
        egress
            shaper-policy policy-name
            unshaped-if-cir cir-rate

The following outputs show an ingress shaper policy applied to an MDA and different shaper policies applied to access egress and network egress traffic on a hybrid port:

*A:ALU>config>card>mda>access# info detail
----------------------------------------------
                ingress
                    fabric-policy 1
                    security-queue-policy 1
                    shaper-policy "test_shaper_policy"
                exit
----------------------------------------------
*A:ALU>config>card>mda>access#

*A:ALU>config>port>ethernet# info
----------------------------------------------
            mode hybrid
            encap-type dot1q
            network
                egress
                    shaper-policy 2
                    unshaped-if-cir 250000
                exit
            exit
            access
                egress
                    unshaped-sap-cir 200000
                    shaper-policy 5
                exit
            exit
----------------------------------------------

Shaper groups are applied to SAPs on Epipe, Ipipe, and VPLS services, and to interface SAPs on IES and VPRN services. The shaper group must exist within the shaper policy assigned to an MDA.

When an unshaped-sap-shaper-group is configured within a shaper policy, it is automatically applied to the unshaped SAPs on the MDA. Operators do not need to specifically apply the unshaped SAP shaper group.

Use the following CLI syntax to apply a shaper group to a VPLS SAP. The syntax is similar for Epipe and Ipipe SAPs. The syntax is also similar for IES and VPRN services, except that the SAP is configured on a service interface.

CLI syntax:

config>service>vpls>sap#
    egress
        [no] shaper-group name
    ingress
        [no] shaper-group name

The following output shows shaper group ‟sg1” applied to access ingress traffic on a VPLS SAP:

*A:ALU>config>service>vpls>sap>ingress# info detail
----------------------------------------------
                    qos 1
                    no match-qinq-dot1p
                    scheduler-mode 16-priority
                    no agg-rate-limit
                    shaper-group sg1
----------------------------------------------
*A:ALU>config>service>vpls>sap>ingress#

Use the show qos shaper-policy command to view information about a shaper policy, its shaper groups (including the unshaped SAP shaper group), the PIR and CIR values, and where the policy is used.

*A:ALU>show qos shaper-policy ‟test_shaper_policy”  detail
===============================================================================
QoS Shaper Policy
===============================================================================
-------------------------------------------------------------------------------
Shaper Policy (test_shaper_policy)
-------------------------------------------------------------------------------
Policy                     : test_shaper_policy
Description                : (Not Specified)
Unshaped Sap Shaper Group  : unshaperd_sg1
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Shaper Group Name                   PIR (Kbps)      CIR (Kbps)
-------------------------------------------------------------------------------
default                             max             0
test_sg1                            999000          555000
unshaperd_sg1                       888000          444000
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
Policy Associations
-------------------------------------------------------------------------------
Object Type    Object Id      Direction
-------------------------------------------------------------------------------
MDA            1/1            access  ingress
MDA            1/2            access  ingress
MDA            1/5            access  ingress
Port           1/2/1          access  egress
Port           1/5/8          network egress
-------------------------------------------------------------------------------
===============================================================================
*A:ALU>show qos shaper-policy ‟test_shaper_policy”  detail#

Create shaped Gen-2 SAPs by configuring the scheduler mode to 16-priority. On Gen-3 hardware, the scheduler mode is always 4-priority and SAPs are shaped.

Configure a shaped SAPs’ aggregate rates by setting the CIR and PIR, as required. The SAP must be shut down before the scheduler mode and the agg-rate and cir-rate can be changed.

Use the first CLI syntax (below) to create shaped SAPs for access egress and access ingress for VLL and VPLS services (including routed VPLS), and the second syntax for IES and VPRN services. Examples are given for Epipe and IES services on Gen-2 and Gen-3 hardware:

CLI syntax:

config>service>epipe service-id customer customer-id create
    sap sap-id create
        egress 
            scheduler-mode {4-priority | 16-priority}
            agg-rate-limit agg-rate [cir cir-rate]
        ingress 
            scheduler-mode {4-priority | 16-priority}
            agg-rate-limit agg-rate [cir cir-rate]

CLI syntax:

config>service>ies service-id customer customer-id create
    interface ip-interface-name create 
    sap sap-id create
        egress 
            scheduler-mode {4-priority | 16-priority}
            agg-rate-limit agg-rate [cir cir-rate]
        ingress 
            scheduler-mode {4-priority | 16-priority}
            agg-rate-limit agg-rate [cir cir-rate]

In the examples below, MDA 1/12 is a Gen-2 adapter card and MDA 1/3 is a Gen-3 adapter card.

Example:

config>service>epipe# sap 1/12/8 create
config>service>epipe>sap# shutdown
config>service>epipe>sap# egress
    ...egress# scheduler-mode 16-priority
    ...egress# agg-rate-limit 250000 cir 150000
config>service>epipe# sap 1/12/7 create
config>service>epipe>sap# ingress
    ...ingress# scheduler-mode 16-priority
    ...ingress# agg-rate-limit 250000 cir 150000
config>service>epipe# sap 1/3/2 create
config>service>epipe>sap# ingress
    ...ingress# agg-rate-limit 250000 cir 150000

Example:

config>service>ies# interface ‟ies_6000_interface”
config>service>ies>if# sap 1/12/5 create
config>service>ies>if>sap# shutdown
config>service>ies>if>sap# egress
    ...egress# scheduler-mode 16-priority
    ...egress# agg-rate-limit 250000 cir 150000
config>service>ies# interface ‟ies_6001_interface”
config>service>ies>if# sap 1/12/6 create
config>service>ies>if>sap# # ingress
    ...ingress# scheduler-mode 16-priority
    ...ingress# agg-rate-limit 250000 cir 150000
config>service>ies>if# sap 1/3/3 create
config>service>ies>if>sap# # ingress
    ...ingress# agg-rate-limit 250000 cir 150000

The following outputs display the shaped SAP configuration for Epipe and IES services:

*A:7705custDoc:Sar18>config>service>epipe# info
----------------------------------------------
....
            sap 1/12/7 create
                shutdown
                ingress
                    scheduler-mode 16-priority
                    agg-rate-limit 250000 cir 150000
                exit
            exit
            sap 1/12/8 create
                shutdown
                egress
                    scheduler-mode 16-priority
                    agg-rate-limit 250000 cir 150000
                exit
            exit
            sap 1/3/2 create
                shutdown
                egress
                    agg-rate-limit 250000 cir 150000
                exit
            exit
----------------------------------------------
*A:7705custDoc:Sar18>config>service>epipe#

*A:7705custDoc:Sar18>config>service>ies# info
----------------------------------------------
....
            interface "ies_6000_interface" create
                sap 1/12/5 create
                    shutdown
                    egress
                        scheduler-mode 16-priority
                        agg-rate-limit 250000 cir 150000
                    exit
                exit
            exit
            interface "ies_6001_interface" create
                sap 1/12/6 create
                    shutdown
                    ingress
                        scheduler-mode 16-priority
                        agg-rate-limit 250000 cir 150000
                    exit
                exit
            exit
            interface "ies_6002_interface" create
            sap 1/3/3 create
                shutdown
                egress
                    agg-rate-limit 250000 cir 150000
                exit
            exit
----------------------------------------------

Use the first CLI syntax to set the unshaped-sap-cir for all unshaped 4-priority SAPs on a 7705 SAR-8 Shelf V2 or 7705 SAR-18. The fabric profile must be in aggregate mode before an unshaped SAP aggregate CIR can be assigned. Use the second CLI syntax for a 7705 SAR-M, 7705 SAR-H, 7705 SAR-Hc, 7705 SAR-A, 7705 SAR-Ax, or 7705 SAR-Wx; it does not apply to the 7705 SAR-X.

CLI syntax:

config>qos
    fabric-profile policy-id aggregate-mode create
        aggregate-rate aggregate-rate [unshaped-sap-cir cir-rate]

CLI syntax:

config>system>qos
    access-ingress-aggregate-rate access-ingress-aggregate-rate [unshaped-sap-cir cir-rate]

Example:

config>qos# 
config>qos# fabric-profile 2 aggregate-mode create
config>qos>fabric-profile# aggregate-rate 250000 unshaped-sap-cir 150000

Example:

config>system>qos# 
config>system>qos# access-ingress-aggregate-rate 250000 unshaped-sap-cir 150000

The following output displays the fabric profile configuration for an H-QoS configuration:

*A:ALU-1:Sar18>config>qos# info detail
#--------------------------------------------------
echo "QoS Policy Configuration"
#--------------------------------------------------
....
 fabric-profile 2 aggregate-mode create
            no description
            aggregate-rate 250000 unshaped-sap-cir 150000
        exit
#--------------------------------------------------

*A:ALU-1>config>qos# 

For the 7705 SAR-M, 7705 SAR-H, 7705 SAR-Hc, 7705 SAR-A, 7705 SAR-Ax, and 7705 SAR-Wx:

*A:7705custDoc:sarM>config>system>qos# info detail
----------------------------------------------
            access-ingress-aggregate-rate 250000 unshaped-sap-cir 150000
            network-ingress-aggregate-rate 2
----------------------------------------------
*A:7705custDoc:sarM>config>system>qos# 

To provide arbitration between the bulk (aggregate) of unshaped SAPs and the shaped SAPs, assign a rate to the unshaped SAPs. See the 7705 SAR Interface Configuration Guide for command descriptions.

Use the following CLI syntax to configure a per-port CIR rate limit for the aggregate of all 4-priority unshaped SAPs on the egress port:

CLI syntax:

config>port port-id>ethernet
    access
        egress
            [no] unshaped-sap-cir cir-rate

Example:

config# port 1/12/7 
config>port# ethernet
config>port>ethernet# access
config>port>ethernet>access# egress
config>port>ethernet>access>egress# unshaped-sap-cir 5000000

The following output displays the port configuration for the unshaped SAPs in an H-QoS configuration:

*A:7705custDoc:Sar18>config>port# info
----------------------------------------------
.....
        ethernet
            access
                egress
                    unshaped-sap-cir 500000
                exit
            exit
        exit
----------------------------------------------
*A:7705custDoc:Sar18>config>port#

Per-VLAN network egress shapers can be configured for network interfaces.

The queue-policy command is used to enable and disable the network egress per-VLAN shapers on a per-interface basis. If the no queue-policy command is used, the VLAN (that is, the interface) defaults to unshaped mode. The agg-rate-limit command cannot be accessed unless a network queue policy is assigned to the interface.

Use the following CLI syntax to configure a per-VLAN network egress shaper on a network interface. See the 7705 SAR Router Configuration Guide for command descriptions.

CLI syntax:

config>router>interface#
        egress 
            queue-policy name 
            agg-rate-limit agg-rate [cir cir-rate]

To provide arbitration between the bulk (aggregate) of unshaped VLANs and the shaped VLANs, assign a rate to the unshaped VLANs.

Use the following CLI syntax to configure a CIR for the bulk of network egress unshaped VLANs. See the 7705 SAR Interface Configuration Guide for command descriptions.

CLI syntax:

config>port>ethernet#
    network 
        egress
            unshaped-if-cir cir-rate