From: P729 (p729@cox.net)
Date: Fri Feb 14 2003 - 03:33:35 GMT-3
Sorry, I'm having a little difficulty following the diagram and your
dilemma, but disregard the answer key for a moment and see if this helps you
figure out with absolute certainty what the correct solution should be:
-Policy routing overrides the way the router normally routes packets--policy
is applied to packets arriving from outside the router
-Local policy routing applies policy to traffic generated by the router
itself
I hope this helps you either understand or correct the answer key.
Regards,
Mas Kato
https://ecardfile.com/id/mkato
----- Original Message -----
From: "Hunt Lee" <huntl@webcentral.com.au>
To: <ccielab@groupstudy.com>
Sent: Thursday, February 13, 2003 9:18 PM
Subject: Policy Routing help!!!
Can someone please explain to me how Policy Routing works??
On a scenario that I'm working on:-
R1
/ | \
R2 R3 R4
!
R5
R1, 2, 3 & 4 are on a hub & spoke topology, and all the routers has a
Ethernet interface attached individually (apart from R3)
If I want the spokes to be able to talk to each other without additional
frame-relay map ip statements, I understand that I will need to use local
policy routing.
For Policy Routing, as I understand it, when packets are received on an
interface, policy routing just looks at the "route-map" and delegate the
packets accordingly (based on the "set" & match" command).
On the model answer, I was told that the policy routing needs to be applied
to all the spoke routers' outgoing Frame-Relay interfaces (i.e. R2, 3 & 4).
But on R3, it says that I will also need to apply Policy Routing to its
internal interface towards R5 (so R3 now has applied Policy routing twice,
once on each interface).
Can anyone explains to me why?? And if R3 is correct, wouldn't I need to
apply Policy Routing on all the Ethernet interfaces on the other spokes (R2
& R4) as well?
Would appreciated any help on this.
Regards,
Hunt
This archive was generated by hypermail 2.1.4 : Sat Mar 01 2003 - 11:06:22 GMT-3