From: ccie2be (ccie2be@nyc.rr.com)
Date: Mon Aug 29 2005 - 15:50:41 GMT-3
Hi guys,
I think this is interesting interpretation issue.
Here's the task:
Mark all multicast traffic as DE except for routing protocol traffic. Don't
use a frame DE-list to accomplish this.
This applies to R1 and R2 between which ospf and ip pim auto-rp is running.
I didn't think this task was that difficult or tricky but my approach didn't
agree with the "official" solution.
So, this is what I did.
I created 2 acl's: 1 for ospf and another for all mcast traffic.
ip access-list extended MCAST
permit ip any 224.0.0.0 15.255.255.255
ip access-list extended OSPF
permit ospf any any
Then, I used MQC.
class-map match-all OSPF
match access-group name OSPF
class-map match-all MCAST
match not class-map OSPF
match access-group name MCAST
!
!
policy-map SET-DE
class MCAST
set fr-de
When I compared my solution to the "official" one, I saw that I didn't
exclude as much traffic as the solution did. The solution, besides
excluding ospf, also excluded ip pim traffic and auto-rp traffic.
I don't consider pim or auto-rp to be "routing protocol traffic".
But, should I?
What does the GS brain trust think?
TIA, Tim
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