Hi,
I am in the middle of creating a new QoS design strategy for a MPLS network with ASR9k Core and 76k and Juniper PE routers.
I have some doubts and I face some problems finding enough information about the integration of the new ASR9k and 76k devices. I don't have much experience with IOS-XR and QoS on such devices is something completely new for me.
I would like to continue using output policy-map for the P-PE, PE-P links, but I can't find any examples. The current QoS configuration includes a simple concept with several classes in which I am matching "experimental topmost" and "dscp"
policy-map qOUT_10G
class GOLD_PQ
police 1500000000 conform-action transmit exceed-action drop
priority
class GOLD_NQ
bandwidth percent 10
class SILVER
bandwidth percent 20
class BRONZE
bandwidth percent 5
class SCAV
bandwidth percent 14
random-detect dscp-based aggregate
random-detect dscp values 16 minimum-thresh 1000 maximum-thresh 5000 mark-prob 1
random-detect dscp values 18 minimum-thresh 1000maximum-thresh 5000 mark-prob 1
class class-default
bandwidth percent 20
random-detect dscp-based aggregate
random-detect dscp values 0 minimum-thresh 15000 maximum-thresh 25000 mark-prob 1
I translated the configuration to the new IOS-XR, but as far I now ASR9k uses MDRR, which is different from the normal CBWFQ concept on 76k devices.
I will make some compatibility tests next days, but I will appreciate any suggestions and hints for QoS between these two type of devices (and maybe Juniper MX960), because I don't want to have different behaviour for traffic although the bandwidth values are the same for all classes in the policy-map. I would like to achieve similar functionality and traffic treatment on both sides - ASR9k and 76k. This is very important and there will be a transition period of exchanging the 76k from the MPLS core to ASR9k.
Please send any pieces of advice.
BR,
Georgi
