Alcatel Unleashed

Hi Guys;


Often i am seeing multi-service site configuration under configure service customer abc>info context. Pls see below:


*A:TEST-PE>config>service>cust# info
----------------------------------------------
multi-service-site "test-01" create
assignment port 1/2/17
ingress
scheduler-policy "v4-L3VPN"
scheduler-override
scheduler "AF1-Traffic" create
rate 20000
exit
scheduler "AF2-Traffic" create
rate 20000
exit
scheduler "AF3-Traffic" create
rate 20000
exit
scheduler "EF-Traffic" create
rate 8000
exit
scheduler "ROOT" create
rate 20000
exit
scheduler "RP_Class" create
rate 1000
exit
exit
exit
egress
scheduler-policy "v4-L3VPN"
scheduler-override
scheduler "AF1-Traffic" create
rate 20000
exit
scheduler "AF2-Traffic" create
rate 20000
exit
scheduler "AF3-Traffic" create
rate 20000
exit
scheduler "EF-Traffic" create
rate 8000
exit
scheduler "ROOT" create
rate 20000
exit
scheduler "RP_Class" create
rate 1000
exit
exit
exit
exit
description "my-test"
contact "jay"
exit

My question is what do we use it for and what is the concept of multi-service site?

also what does scheduler-override command do and why is it needed.

cheers

A multi-service site allows you to apply a single scheduler policy to all SAPs associated with a site but still have per-service and per-forwarding class shaping and policing. The SAPs associated with the multi-service site have to be on the same slot.

If you have a large number of customers, it's easy to end up with a large number of slightly different QoS policies maybe with things like slightly different CIR and PIR rates. To make things easier, you can instead override the scheduler rates of a template policy in the SAP configuration. The idea is to minimise the number of QoS policies you have configured.This is known as QoS override or scheduler-override.

thanks mivens;

i had seen documents which tell me that an mss is a collection of saps. There are vprn services in our network which have customer's service vrf configured on ingress PE and the same service vrf configured on egress PEs (facing sbcs, voip platforms, other service delivery platforms etc). There are saps on ingress vrf and egress vrfs which qos policies on ingress and egress (with overrides) and under show service customer xxxyyy->info command i see mss scheduler configurations. Is this service design the reason why we are using mss (saps present across multiple nodes)? If so then would qos scheduler policies under mss be the same on all saps for this service vrf?


regards

The short answer is the typical use case for Multiple Service Site (MSS) is multiple SAPs on a single node, not SAPs across multiple nodes.

One reason you may be using MSS with a single SAP on an node to allow the service to be expanded in the future to multiple SAPs.