From: Ben Rife (brife@xxxxxxxxxx)
Date: Sun Jul 11 1999 - 22:21:29 GMT-3
Ok Guys, and Girls, here's the scoop on "summary-address" and "area # range
x.x.x.x y.y.y.y":
I hope you don't waste as much time on this as I have. Here's what I have
found.
The following is assuming you have a /24 IGRP domain and VLSM in your OSPF
domain.
1. When you want to mutally redistribute your OSPF and IGRP domains you need
to use "summary-address" on the ASBR where the redistribution is done for
the routes that are E1/E2 type routes.
2. For everything else, you should be able to use "area # range ...." to
summarize your subnets in OSPF to match the mask of your IGRP domain ( /24
in this case ).
3. Remember to use distribute lists on the IGRP side of the ASBR otherwise,
you WILL have one heck of a routing loop(s), otherwise you will have one
heck of a routing loop(s), otherwise you will have one heck of a routing
loop(s), etc....get the point?
4. Others, the other involved issues should be common sense to all of you.
We won't discuss those at this juncture.
Talk to you guys tomorrow ...and tonight. Tomorrow is my last day to prepare
......!
Ben
----- Original Message -----
From: Chad Marsh <chad@wa.net>
To: Ben Rife <brife@bignet.net>
Sent: Sunday, July 11, 1999 4:50 PM
Subject: Re: OSPF Summary
> I know the area range command is used only to summarize one ospf area
> into another (usually the backbone), not to inject summary information
> into another routing process. If I understand what you are trying to do
> though, you want to summarize an area to a /24, so that your ASBR will
> inject that route into your IGRP process? If so, I think it would have
> to be summarized at the router before the ASBR (if possible, I don't
> know your topology), so the ASBR receives the summary route. I don't
> know if the ASBR can summarize and redistribute the route into IGRP at
> the same time. Another guy said the summary address command is to
> summarize exterior routes (from another protocol) and inject them INTO
> OSPF, not the other way around, and I think that's correct.
> Disclaimer: I'm no expert on OSPF yet, just shooting some things off the
> top of my head that might point you in the right direction.
>
> Good luck on your lab, and let me know how it goes. Mine isn't 'til
> October 4-5th
>
> Chad
>
>
>
> Ben Rife wrote:
> >
> > I'll work on it right now Chad. I should have an answer any minute now.
I
> > had a few suggestions to use area # range x.x.x.x etc. The strange thing
is
> > that I got it to work with the summary statements using 11.2 but when I
used
> > 12.0, it didn't work. I'll let you know after while though. Thanks.
When's
> > your lab?
> >
> > ----- Original Message -----
> > From: Chad Marsh <chad@wa.net>
> > To: Ben Rife <brife@bignet.net>
> > Sent: Sunday, July 11, 1999 4:26 PM
> > Subject: Re: OSPF Summary
> >
> > > Ben, did you get this one figured out? I'm curious to know what the
> > > solution is.
> > >
> > > Chad
> > >
> > >
> > >
> > > Ben Rife wrote:
> > > >
> > > > Chad, here's the "sh run" and "sh ip int brief" and "sh ip ospf
summ"
> > > >
> > > > Sleepy#
> > > > Sleepy#sh run
> > > > Building configuration...
> > > >
> > > > Current configuration:
> > > > !
> > > > version 12.0
> > > > service timestamps debug uptime
> > > > service timestamps log uptime
> > > > no service password-encryption
> > > > !
> > > > hostname Sleepy
> > > > !
> > > > !
> > > > ip subnet-zero
> > > > no ip domain-lookup
> > > > !
> > > > isdn switch-type basic-ni
> > > > !
> > > > !
> > > > !
> > > > !
> > > > interface FastEthernet0/0
> > > > ip address 170.100.14.241 255.255.255.240 secondary
> > > > ip address 1.1.1.1 255.255.255.0
> > > > no ip directed-broadcast
> > > > ip nat inside
> > > > !
> > > > interface BRI0/0
> > > > ip address 170.100.9.2 255.255.255.240
> > > > no ip directed-broadcast
> > > > encapsulation ppp
> > > > ip ospf network point-to-multipoint
> > > > ip ospf cost 64
> > > > dialer-group 1
> > > > isdn switch-type basic-ni
> > > > isdn spid1 0835866201 8358662
> > > > isdn spid2 0835866401 8358664
> > > > hold-queue 75 in
> > > > !
> > > > interface FastEthernet0/1
> > > > no ip address
> > > > no ip directed-broadcast
> > > > !
> > > > interface Serial1/0
> > > > no ip address
> > > > no ip directed-broadcast
> > > > encapsulation frame-relay
> > > > no ip mroute-cache
> > > > !
> > > > interface Serial1/0.1 multipoint
> > > > ip address 170.100.6.3 255.255.255.0
> > > > no ip directed-broadcast
> > > > ip nat outside
> > > > ip ospf network point-to-multipoint
> > > > frame-relay map ip 170.100.6.1 202 broadcast
> > > > frame-relay map ip 170.100.6.2 203 broadcast
> > > > frame-relay interface-dlci 202
> > > > frame-relay interface-dlci 203
> > > > !
> > > > interface Serial1/0.2 point-to-point
> > > > ip address 170.100.5.1 255.255.255.0
> > > > no ip directed-broadcast
> > > > ip nat outside
> > > > frame-relay interface-dlci 204
> > > > !
> > > > interface Serial1/1
> > > > no ip address
> > > > no ip directed-broadcast
> > > > !
> > > > interface Serial1/2
> > > > no ip address
> > > > no ip directed-broadcast
> > > > shutdown
> > > > !
> > > > interface Serial1/3
> > > > no ip address
> > > > no ip directed-broadcast
> > > > shutdown
> > > > !
> > > > router ospf 100
> > > > summary-address 170.100.7.0 255.255.255.0
> > > > summary-address 170.100.14.0 255.255.255.0
> > > > summary-address 170.100.9.0 255.255.255.0
> > > > redistribute connected metric 64 subnets route-map cciemap
> > > > redistribute igrp 100 metric 20 subnets
> > > > network 170.100.6.0 0.0.0.255 area 0
> > > > network 170.100.9.0 0.0.0.255 area 0
> > > > !
> > > > router igrp 100
> > > > redistribute ospf 100 metric 64 100 255 1 1500
> > > > passive-interface FastEthernet0/0
> > > > passive-interface Serial1/0.1
> > > > network 170.100.0.0
> > > > distribute-list 1 out ospf 100
> > > > distribute-list 2 in Serial1/0.2
> > > > !
> > > > ip nat pool ccie 170.100.14.241 170.100.14.254 netmask
255.255.255.240
> > > > ip nat inside source list 3 pool ccie overload
> > > > ip classless
> > > > no ip http server
> > > > !
> > > > access-list 1 permit 192.64.5.0
> > > > access-list 1 permit 170.100.6.0 0.0.0.255
> > > > access-list 1 permit 170.100.4.0 0.0.0.255
> > > > access-list 1 permit 170.100.3.0 0.0.0.255
> > > > access-list 1 permit 170.100.9.0 0.0.0.255
> > > > access-list 1 permit 170.100.8.0 0.0.0.255
> > > > access-list 1 permit 170.100.7.0 0.0.0.255
> > > > access-list 2 permit 170.100.5.0 0.0.0.255
> > > > access-list 2 permit 205.15.0.0 0.0.255.255
> > > > access-list 2 permit 192.78.5.0 0.0.0.255
> > > > access-list 2 permit 170.100.15.0 0.0.0.255
> > > > access-list 3 deny 1.1.1.254
> > > > access-list 3 permit 1.1.1.0 0.0.0.255
> > > > access-list 4 permit 1.1.1.0 0.0.0.255
> > > > access-list 5 permit 170.100.14.240 0.0.0.15
> > > > access-list 5 permit 170.100.5.0 0.0.0.255
> > > > dialer-list 1 protocol ip permit
> > > > route-map cciemap permit 10
> > > > match ip address 5
> > > > set interface Serial1/0.1
> > > > !
> > > > !
> > > > !
> > > > line con 0
> > > > transport input none
> > > > line aux 0
> > > > line vty 0 4
> > > > login
> > > > !
> > > > end
> > > >
> > > > Sleepy#sh ip ospf summ
> > > >
> > > > OSPF Process 100, Summary-address
> > > >
> > > > 170.100.7.0/255.255.255.0 Metric 16777215, Type 0, Tag 0
> > > > 170.100.14.0/255.255.255.0 Metric 64, Type 2, Tag 0
> > > > 170.100.9.0/255.255.255.0 Metric 16777215, Type 0, Tag 0
> > > > Sleepy#
> > > > Sleepy#
> > > > Sleepy#
> > > > Sleepy#sh ip int brief
> > > > Interface IP-Address OK? Method Status
> > > > Protocol
> > > > FastEthernet0/0 1.1.1.1 YES manual up
> > up
> > > > BRI0/0 170.100.9.2 YES NVRAM up
> > up
> > > > BRI0/0:1 unassigned YES unset down
> > down
> > > > BRI0/0:2 unassigned YES unset down
> > down
> > > > FastEthernet0/1 unassigned YES NVRAM up
> > down
> > > > Serial1/0 unassigned YES NVRAM up
> > up
> > > > Serial1/0.1 170.100.6.3 YES NVRAM up
> > up
> > > > Serial1/0.2 170.100.5.1 YES NVRAM up
> > up
> > > > Serial1/1 unassigned YES NVRAM down
> > down
> > > > Serial1/2 unassigned YES NVRAM administratively
down
> > down
> > > > Serial1/3 unassigned YES NVRAM administratively
down
> > down
> > > > Sleepy#
> > > > Sleepy#
> > > >
> > > > ----- Original Message -----
> > > > From: Chad Marsh <chad@wa.net>
> > > > To: Ben Rife <brife@bignet.net>
> > > > Sent: Thursday, July 08, 1999 12:40 AM
> > > > Subject: Re: OSPF Summary
> > > >
> > > > > Ben, can I see you config on the ASBR? or at least the 'router
igrp'
> > > > > section?
> > > > >
> > > > > Chad
> > > > >
> > > > >
> > > > >
> > > > > > Ben Rife wrote:
> > > > > >
> > > > > > Guys, 6 days away...
> > > > > >
> > > > > > Please help, I have struggled with this for weeks.
> > > > > >
> > > > > > I have the following problem in my lab. I am redistributing
> > > > > > OSPF<-->IGRP on an ASBR. I have subnets in my OSPF domain. I
want to
> > > > > > summarize a subnet with a /24 mask so I can redistribute it to
my
> > IGRP
> > > > > > Domain which is /24. When I do a "summary 170.100.7.0
255.255.255.0"
> > > > > > on my ASBR router under OSPF, it never get's put into my route
> > table.
> > > > > > When I enter "sh ip ospf summary" I get the following metric:
> > > > > >
> > > > > > RouterA#sh ip ospf summ
> > > > > >
> > > > > > OSPF Process 100, Summary-address
> > > > > >
> > > > > > 170.100.7.0/255.255.255.0 Metric 16777215, Type 0, Tag 0
> > > > > >
> > > > > > Any Idea what the problem is? I also have the same problem with
a
> > > > > > connected BRI interface which has a /28 mask.
> > > > > >
> > > > > > Benjy Rife
> > > > > > MCSE, CNE, CCIE Candidate
> > > > > > brife@bignet.net
> > > > > > www.bignet.net/~brife
> > > > >
> > >
>
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