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Webcast-Catalyst9k
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IP-Prec based WRED on tag-switched interface

hi,

i have a atm interface on which i do tag-switching because of mpls.

!

interface ATM2/0.100100 point-to-point

description MPLSWELSPE01: PVC to MPLSRBGOPE03 (ATM2/0.100100)

ip address x.x.x.x

ip ospf cost 50

ip ospf priority 100

pvc 100/100

cbr 8800

oam-pvc manage 3

oam retry 3 3 3

max-reserved-bandwidth 95

service-policy output queue_serial_MPLS

!

mpls label protocol ldp

tag-switching mtu 1512

tag-switching ip

!

!

On this interface i have a servicepolicy defined on which i guarantee bandwith.

i also want to use wred in each class to drop pakets based on their ip-prec.

!

policy-map queue_serial_MPLS

class voice

priority percent 20

class gold

bandwidth percent 30

random-detect

random-detect precedence 4 35 40 10

class silber

bandwidth percent 30

random-detect

random-detect precedence 3 25 40 10

class stahl

bandwidth percent 10

random-detect

random-detect precedence 1 20 40 10

class fr_kunden

bandwidth percent 5

class class-default

fair-queue

random-detect

random-detect precedence 0 10 40 10

!

is this possible even if this policy is on an label-switched interface

(on such a interface i have a mpls-experimental bit which is copied from the

ip-prec bit)

thanks for an answer

1 REPLY

Re: IP-Prec based WRED on tag-switched interface

I think you should not be setting or changing the customers IP precedence or DSCP values, because he might be using these values for his own QoS (not sure whether he is setting precedence values or not). You should be setting only MPLS experimental value fields, for your own QoS needs. Class based WRED should still work in an MPLS environment.

HTH

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