From: alfred zhang (alfredzh@xxxxxxxxxxxxxxxxx)
Date: Mon Jul 05 1999 - 23:47:25 GMT-3
hi,
I configured it use "summary-address 138.146.150.0 255.255.255.0" command.I
found that if the network is the common ospf network(LAN,F/R),i can use the
command to redistribute the vlsm route to rip/igrp.But if the network is the
ospf demand-circuit network(ISDN,PSTN),the command would not perform the
redistribution.At first,the ospf summary route "138.146.150.0" will show.After
several seconds,the ospf summary route will disappear,so the vlsm route would
not redistribute into rip/igrp.
Ben Rife wrote:
> Alfred,
>
> This is the classic FLSM/VLSM problem. You will (should) become an
> expert at this before taking the lab. There are several ways to connect the
> two routing protocols. For example:
>
> Assuming that you have a 24 bit mask for the rip domain:
>
> You could use the "OSPF Router ###" sub-command:
> summary-address 136.148.150.0 255.255.255.0
> summary-address 172.16.30.0 255.255.255.0
> etc...for each subnet in the ospf domain you want to advertise
>
> The routes will be advertised into rip with the common mask /24. The problem
> here is that the two "routing domains" use different subnet masks. You need
> to use the summary-address command to inject the /24 bit summary into rip.
>
> One important thing to remember is that when you do mutual redistribution as
> in this case, you will have routing loops. To prevent/avoid them, you must
> use a distribution-list on the rip side. You could put a dist-list on OSPF,
> but documentation says that is better to perform it on the other non-OSPF
> protocols.
>
> Others in the group are experts on this subject and probably could convey
> the problem/solution to you better. I hope that I helped though.
>
> Benjy Rife
> MCSE, CNE, CCIE Candidate
> brife@bignet.net
> www.bignet.net/~brife
>
> ----- Original Message -----
> From: zhang min <alfredzh@public1.ptt.js.cn>
> To: <ccielab@groupstudy.com>
> Sent: Sunday, July 04, 1999 8:55 PM
> Subject: redistribute vlsm route to rip/igrp
>
> > hi guys,
> >
> > can anybody tell me how to redistribute VLSM route to rip/igrp?For
> > example,router A connects ospf 1 and rip area.In ospf 1,there are
> > several VLSM route,136.148.150.4/30,how to redistribute it into rip?
> >
> > alfred
> >
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