From: Le Dinh An (anld@ispco.com.vn)
Date: Tue Nov 19 2002 - 04:46:43 GMT-3
Since all interfaces are in a class B network, if we use the network
statement under RIP then all directly connected subnets will be put into
RIP. Don't know if we can redistribute those direcly connected subnets or
not.
My solution earlier won't work either and I would agree with Donny :-).
An
Aamer Kaleem wrote:
I am not sure it will work or not, but here is an
idea:
Under router rip, redistribute connected using a route
map and filter them. Also redistribute ospf and donot
filter anything here...
sounds crazy, but might work..
Aamer
--- Donny MATEO <donny.mateo@sg.ca-indosuez.com> wrote:
Hi Frank,
I don't think this is possible. There is no
mechanism in RIP to differenciate between route
learned
internally or route learned from other network
protocol by default ( you can say metric, but no
update filtering based on metric, beside it won't
even make it to the database so no use).
And if you redistribute ospf into RIP by default rip
will favor to advertise the "connected" route
rather then taking it from OSPF in that case, I
don't even think the redistributed route would be in
the RIP database.
Donny
frank.yu@japan.bnp
paribas.com To:
dennis.d.adekola@britishairways.com
Sent by: cc:
ccielab@groupstudy.com
nobody@groupstudy.
Subject: Re: is this possible?
com
19-11-2002 09:50
Please respond to
frank.yu
All,
Thanks for the idea. Maybe I did not explain it
clearly, let me make it
a bit clear. The requirement is to make all the
routers running RIP learn
the route in OSPF domain by redistribution from OSPF
rather than directly
learning the route by rip advertising from the
border router (the router
running both rip and ospf).
As we know, RIP is a classful routing protocol,
so we can only put
classful "network x.x.x.x" under "router rip"
configuration mode. So if the
scenario is class B address with /24 subnetmask all
over the place, when we
enable rip on the border router, the ip addresses in
ospf domain which is
on the border router also has been included in RIP
domain. What bothered me
is how can we prevent these ip addresses being
included in RIP domain?
While all routers in RIP domain still need to be
able to reach these ip
addresses in ospf domain by redistribution from ospf
on border router. Is
this possible?
As far as I know, passive interface won't be the
solution. Because it
only disable the border router from updating the
routing information
through that certain interface. And I don't see how
filter list works.
Because if we filter the route being advertise to
other rip routers, the
route redistributes from ospf will also be filtered.
Right?
Correct me if I am wrong and sorry for the
influent English. That's
something I need to work on after this test. :-)
Frank
Internet dennis.d.adekola@britishairways.com@groupstudy.com -
11/18/2002 07:35 PM
Please respond to dennis.d.adekola@britishairways.com
Sent by: nobody@groupstudy.com
To: Frank Yu
cc: ccielab
Subject: Re: is this possible?
Frank,
You can make you of passive interfaces
That is, place a passive interface on the
interface/s you don't want RIP to
shout out from
You can also do the same for OSPF
Hope this helps
Dennis
frank.yu@japan.bnpparibas.com@groupstudy.com on
18/11/2002 08:35:04
Please respond to frank.yu@japan.bnpparibas.com
Sent by: nobody@groupstudy.com
To: ccielab
cc:
bcc:
Subject: is this possible?
Group,
If a router running both rip and ospf, all the ip
addresses on the
router are class B with /24 subnetmask.
When I enable rip on the router, I have to enable
the whole classB
network, in this case the ip addresses configured in
ospf domain also
belong and advertise through rip now.
My question is, how could I prevent the ip address
in ospf domain being
advertised through rip directly, so the routers in
rip domain only learn
these route by the redistribution of ospf.
Thanks in advance.
Frank
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