[c-nsp] FR QOS

[Oliver Boehmer (oboehmer)]

> I need some help with respect to the FR QOS. In our scenario, we have
> 2 PVC's configured under single E1 Link and PVC belongs to respective
> customer. The respective PVC has again 4 different types of traffic
> such as Voice, FTP, etc.   
> 
> The Demand is that Total E1 BW should be utilized among to the 2
> VPN's and again among the respective classes of traffic such as
> Voice, FTP, etc. The QOS config should be defined in such a way that
> in case PVC-1 is down then PVC-2 should utilize all the E1 BW and
> then sub divide among all the 4 classes.    
> 
> Similarly it should be other way round also.
> 
> Can some body tell me what sort of QOS config has to deployed for
> achieving this ? 

You need some form of hierarchical CBWFQ using the "match fr-dlci"
class-map classification in the parent and your customer-specific
classes at the child. you would then apply the policy-map at the
physical FR interface, not at the customer-specific sub-interfaces.
Please note that some platforms (for example 3600) require you to shape
at the parent.

Here's an example:

class-map match-all platin
 match ip precedence 5
class-map match-all gold
 match ip precedence 3
class-map match-all silber
 match ip precedence 2
!
class-map match-all dlci-402
 match fr-dlci 402
class-map match-all dlci-401
 match fr-dlci 401
!
!
policy-map customer-1
 class platin
  priority 64
 class gold
  bandwidth 64
 class silber
  bandwidth 64
 class class-default
  random-detect
  bandwidth 64
!
policy-map customer-2
 ....
!
policy-map Out-s4/1/0
 class dlci-401
  bandwidth percent 50
  service-policy customer-1
 class dlci-402
  bandwidth percent 25
  service-policy customer-2
!
interface Serial4/1/0
 bandwidth 512000
 no ip address
 no ip directed-broadcast
 encapsulation frame-relay
 load-interval 30
 frame-relay intf-type dce
 service-policy output Out-s4/1/0
!
int Serial4/1/0.1
 ip address ...
 frame-relay interface-dlci 401
int Serial4/1/0.2
 ip address ...
 frame-relay interface-dlci 402

	oli