From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Wed Dec 06 2000 - 06:44:18 GMT-3
Tag is just a way of flagging a route so that you can apply whatever policy
you require. Very similar to the community attribute in BGP.
E.g. you could tag routes into an OSPF domain coming from EIGRP 208 with the
tag '208'. Then on a router that connects to some public area, you make not
want to redistribute these tagged routes. SO you use the match tag command
in route map to do this. This makes the whole process a lot more scalable
than matching networks.
-----Original Message-----
From: Simon Baxter [mailto:Simon.Baxter@au.logical.com]
Sent: Wednesday, December 06, 2000 6:06 PM
To: Connary, Julie Ann; ccielab@groupstudy.com
Subject: RE: tag in a route map
have a look at an OSPF route or BGP route, the tag is part of the route
information.
you can also get the router to calculate the tag when tabling a BGP route.
anyway. look at a route learned by BGP or OSPF "show ip ro 10.0.0.0" and it
will show you the tag...
it's a number between 0 to 4294967295
-----Original Message-----
From: Connary, Julie Ann [mailto:jconnary@cisco.com]
Sent: Wednesday, December 06, 2000 1:18 PM
To: ccielab@groupstudy.com
Subject: tag in a route map
Hi,
I am reviewing route-maps and there is an option called "tag" . That is you
could set a tag. You can also match on a tag.
You can set a tag on a static route:
ip route prefix mask {address | interface} [distance] [tag tag] [permanent]
You can set a tag on a redistribute command:
redistribute protocol [process-id] {level-1 | level-1-2 | level-2} [metric
metric-value] [metric-type type-value] [match internal | external
type-value] [tag
tag-value] [route-map map-tag] [weight weight] [subnets]
Does anyone know what these tags are? How are they suppose to be used? Are
they numeric?
Julie ann
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