Task 8.2 Traffic Marking..

chriso · January 2012

Here is my answer to the question 8.2. Is this correct? It says to mark all outgoing packet except VOIP and OSPF packets with DE-bit.

!

class-map match-all CRITICAL

match not packet length min 80 max 100

match not protocol ospf

match any

!

policy-map STRICT

class CRITICAL

set fr-de

!

I am not sure I agree with SG with the way it classified the traffic. Wouldn't class ANY set fr-de on all packet including the OSPF and VOIP because it is not excluded from the ANY class! Pls help.

class-map match-any CRITICAL

match packet length min 80 max 100

match protocol ospf

!

policy-map MARK

class CRITICAL

class ANY

set fr-de

relativitydrive · May 2013

Chriso,

In the policy-map traffic that matches CRITICAL would therefore be excluded from further criteria and therefore not marked with FR-DE. If the order were ANY then CRITICAL is would match ANY and not progress to CRITICAL as you suggest.

Narayan.Neupane · May 2013

I am not sure I agree with SG with the way it classified the traffic. Wouldn't class ANY set fr-de on all packet including the OSPF and VOIP because it is not excluded from the ANY class! Pls help.

class-map match-any CRITICAL

match packet length min 80 max 100

match protocol ospf

!

policy-map MARK

class CRITICAL

class ANY

set fr-de

Hi Chriso,

You solution also correct:

Either you can create a separate CLASS ANY and match any or use class class-default under policy-map and enable the Discard Bit.

I did a quick test working fine.

R6#show policy-map interface s1/0.604

Serial1/0.604

Service-policy output: MARK

    Class-map: CRITICAL (match-any)
      129 packets, 11052 bytes
      5 minute offered rate 0 bps
      Match: packet length min 80 max 100
        122 packets, 10484 bytes
        5 minute rate 0 bps
      Match: protocol ospf
        7 packets, 568 bytes
        5 minute rate 0 bps

    Class-map: class-default (match-any)
      12 packets, 3804 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any
      QoS Set
        fr-de
          Packets marked 12

R6#show frame-relay pvc 604

PVC Statistics for interface Serial1/0 (Frame Relay DTE)

DLCI = 604, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1/0.604

input pkts 183           output pkts 174          in bytes 20464
out bytes 20046          dropped pkts 0           in pkts dropped 0
out pkts dropped 0                out bytes dropped 0
in FECN pkts 0           in BECN pkts 0           out FECN pkts 0
out BECN pkts 0          in DE pkts 0             out DE pkts 13
out bcast pkts 159       out bcast bytes 18486
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
pvc create time 00:22:06, last time pvc status changed 00:19:31

Good Luck

Task 8.2 Traffic Marking..

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