From: Alan (groupstudy@xxxxxxxx)
Date: Fri Feb 08 2002 - 01:19:54 GMT-3
you misunderstood me.
Routing packets is a bit different from manipulating routing information.
When routing packets, we check the source add and dest add. So we might use sta
ndard acl to match source add, and use extended acl to match both.
when we are talking about routing info, we care destination network and nexthop
add. say
to network 2.2.2.0/24, go next hop 1.1.1.1.
We use "match ip add " to match 2.2.2.0 and use "match ip next-hop" to match 1.
1.1.1.
----- Original Message -----
From: "michael robertson" <michael_w_2ca@yahoo.ca>
To: <ccielab@groupstudy.com>
Cc: "Alan" <groupstudy@x263.net>
Sent: Friday, February 08, 2002 11:49 AM
Subject: Re: route map question
> HI,
>
> about the question 2, you mean the route-map will use
> destination address? I think it different. If you see
> all the routing protocol format, the advertisint
> router's update has a field that includes the
> destination he can reach, in this case, does this mean
> that when a router get a packet (suppose the router
> enable a route map), the router then will check this
> field ( the updated destination ip address field) for
> the route-map to work?
>
>
> regards
>
> michael
>
>
> --- Alan <groupstudy@x263.net> wrote:
> > A1: if you want to policy route packets, you should
> > enable route-map in an interface.
> > while if you want to manipulate the routing
> > information, you use it in a routing process.
> >
> > A2: the same question as A1. Route-map has two
> > places to take effects.
> > when route-map is used in policy routing, you can
> > use standard or extended ACL to match both source
> > and destination address.
> > when route-map is used with redistribution, "match
> > ip add " matches routes that have a dest add
> > specified by ACL. Only match one add (dest add), so
> > we use standard acl.
> >
> > Check Jeff Doyle, it helps a lot.
> >
> > ----- Original Message -----
> > From: "michael robertson" <michael_w_2ca@yahoo.ca>
> > To: <ccielab@groupstudy.com>
> > Sent: Friday, February 08, 2002 9:41 AM
> > Subject: route map question
> >
> >
> > > Hi, Group,
> > >
> > > I have some question concerning route map.
> > >
> > > Question 1:
> > >
> > > when should i enable a route-map in an interface
> > and
> > > when sould i use it in a routing process.
> > >
> > >
> > > Question 2.
> > >
> > >
> > > If I say
> > >
> > > route-map ccie permit 10
> > >
> > > match ip add 1
> > >
> > >
> > > this 1 is access-list 1
> > >
> > >
> > >
> > > then I will call access-list 1, but access-list
> > will
> > > use source ip address( i.e. standard access-list).
> > My
> > > question is what source address this is. if you
> > look
> > > from the packet format, will this the source IP
> > > address (i.e. for ping, telnet, ftp etc) or what's
> > > this?
> > >
> > > also in a routing process, you can also use a
> > standard
> > > access-list to specify a routing update ( for
> > route
> > > ridistribution etc.), then it will be routing
> > > protocol-specific. i.e. in OSPF update, LSA field
> > has
> > > a LINK ID, will the route map will call the
> > > access-list 1, and access list will check the Link
> > ID?
> > >
> > >
> > > as always, any help will be greatly appreciated
> > >
> > >
> > > regards
> > >
> > >
> > > michael
> > >
> > >
> > >
> > >
> > >
> >
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