| Author |
Route Map Question
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| Johnno 2003-09-21, 5:12 pm |
| Damn this thread posting has gotten a little more guchi.
Anyway, If you have a route map in place which accesses an access list for routing decisions, does it drop a packet that does not meet the criteria or does it simply route the packet as it would normally.
I say the latter but a collegue swears that the packet will be dropped. I don't have access to any eqpt for a couple of days and am unable to test this.
L8r. Don't Bend. | |
| Yankee 2003-09-22, 5:05 am |
| if you are referring to policy routing using route maps in a standard format, then a "miss" on the access-list means the packet will drop out of policy routing and be routed normally. A match on the permit access-list means it will follow the policy routing. It can get tricky with the permits and denys, but that's the basics.
Yankee | |
| Johnno 2003-09-22, 4:19 pm |
| Yankee,
You are the man. 
(Or lady - my apologies).
This is exactly what I was referring to.
Stay safe. | |
| dragon113 2003-09-23, 12:28 am |
| Hi Yankee!
One more question about route-map, what is happened if route-map doesn't has implicit deny all at the end of route-map? In this situation, what is happened with packet that doesn't match any statements in the route-map??? | |
| SureshHomepage 2003-09-23, 2:24 am |
| It doesn't matter if you don't insert the "implicit deny all" statement at the end of a route-map....as by default its denied.
Packets that doesn't matach the crieteria specified by the match statement(s) would be denied.
1. Using the access-lists you specify the intersting traffic that needs route/metric manipulation.
2. On the route-map you mention the criteria for this interesting traffic.
3. You attach this rotue-map to the statements under the routing engines like router ospf or router bgp... | |
| Yankee 2003-09-23, 4:47 am |
| Suresh
you can also use route maps for policy routing as I stated before, so to answer dragon's question the implicit deny would cause the packet to fall out of policy routing and be routed normally.
Yankee | |
| SureshHomepage 2003-09-29, 1:28 am |
| Yankee!
You are correct. Its true route maps are also used for policy routing...sorry for not having included that in my reply. | |
| Yankee 2003-09-29, 8:02 am |
| I knew you knew it but just didn't want the others confused 
Yankee |
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