From: SFeldberg@xxxxxxxxxxxxx
Date: Mon Dec 03 2001 - 19:50:13 GMT-3
The only way I was able to make this work was by making the OSPF
redistribution router an ABR to enable the use of the area-range command.
In my scenario, R6 and R5 are running IGRP 56 over ethernet. The IGRP
domain is 192.168.x.0 /24. R5 has the p2mp FR connection to R7, which is
running OSPF over the 216.248.176.252 /30 subnet with R7.
Solution: Area 55 is added to R5, area 0 range 216.248.176.0 255.255.255.0
command is added to R5. R5 redistributes OSPF 10 into IGRP 56 using the
following route-map and access-list:
router igrp 56
redistribute ospf 10 route-map ospf2igrp
!
access-list 101 permit ip host 216.248.176.0 host 255.255.255.0
!
route-map ospf2igrp permit 10
match ip address 101
IGRP 56 on R6 now sees the summarized route
r6#sh ip route
C 192.168.6.0/24 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Ethernet0
I 216.248.176.0/24 [100/8576] via 192.168.1.5, 00:00:16, Ethernet0
Full configs for R5, R6 and R7:
r5#sh run
Building configuration...
Current configuration : 1223 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r5
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
!
!
interface Loopback0
ip address 55.55.55.55 255.255.255.255
!
interface Ethernet0
ip address 192.168.1.5 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
frame-relay lmi-type cisco
!
interface Serial0.2 multipoint
ip address 216.248.176.254 255.255.255.252
ip ospf network point-to-multipoint
frame-relay interface-dlci 507
!
interface Serial1
no ip address
shutdown
!
interface BRI0
no ip address
shutdown
isdn x25 static-tei 0
!
router ospf 10
router-id 5.5.5.5
log-adjacency-changes
area 0 range 216.248.176.0 255.255.255.0
network 55.55.55.55 0.0.0.0 area 5
network 216.248.176.252 0.0.0.3 area 0
!
router igrp 56
redistribute ospf 10 route-map ospf2igrp
network 192.168.1.0
network 192.168.5.0
default-metric 1 1 1 1 1
!
ip classless
ip http server
!
access-list 101 permit ip host 216.248.176.0 host 255.255.255.0
route-map ospf2igrp permit 10
match ip address 101
!
!
!
line con 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
login
!
end
r5#sh ip ospf d
OSPF Router with ID (5.5.5.5) (Process ID 10)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
5.5.5.5 5.5.5.5 409 0x80000002 0xD8E 2
7.7.7.7 7.7.7.7 409 0x8000001C 0xD4A7 2
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
55.55.55.55 5.5.5.5 424 0x80000001 0x113A
Router Link States (Area 5)
Link ID ADV Router Age Seq# Checksum Link count
5.5.5.5 5.5.5.5 434 0x80000001 0xD556 1
Summary Net Link States (Area 5)
Link ID ADV Router Age Seq# Checksum
216.248.176.0 5.5.5.5 424 0x80000001 0xACF9
r5#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
55.0.0.0/32 is subnetted, 1 subnets
C 55.55.55.55 is directly connected, Loopback0
I 192.168.6.0/24 [100/1600] via 192.168.1.6, 00:00:08, Ethernet0
C 192.168.1.0/24 is directly connected, Ethernet0
216.248.176.0/24 is variably subnetted, 3 subnets, 3 masks
C 216.248.176.252/30 is directly connected, Serial0.2
O 216.248.176.253/32 [110/64] via 216.248.176.253, 00:06:39,
Serial0.2
O 216.248.176.0/24 is a summary, 00:06:39, Null0
r5#
Xyplex -012- LAB:6 session 2 resumed
r6#sh run
Building configuration...
Current configuration : 687 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r6
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
!
!
interface Loopback0
ip address 192.168.6.1 255.255.255.0
!
interface Ethernet0
ip address 192.168.1.6 255.255.255.0
!
interface Serial0
no ip address
encapsulation frame-relay
shutdown
frame-relay lmi-type cisco
!
interface Serial1
no ip address
shutdown
!
interface BRI0
no ip address
shutdown
isdn x25 static-tei 0
!
router igrp 56
network 192.168.1.0
network 192.168.6.0
!
ip classless
ip http server
!
!
!
line con 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
!
end
r6#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
C 192.168.6.0/24 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Ethernet0
I 216.248.176.0/24 [100/8576] via 192.168.1.5, 00:01:13, Ethernet0
r6#
Xyplex -012- LAB:7 session 3 resumed
r7#sh run
Building configuration...
Current configuration : 740 bytes
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r7
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
!
!
interface Ethernet0
no ip address
shutdown
!
interface Serial0
no ip address
encapsulation frame-relay
no fair-queue
no frame-relay inverse-arp
!
interface Serial0.2 multipoint
ip address 216.248.176.253 255.255.255.252
ip ospf network point-to-multipoint
frame-relay interface-dlci 705
!
interface Serial1
no ip address
shutdown
!
router ospf 10
router-id 7.7.7.7
log-adjacency-changes
network 216.248.176.252 0.0.0.3 area 0
!
ip classless
ip http server
!
!
!
line con 0
privilege level 15
logging synchronous
line aux 0
line vty 0 4
!
end
r7#sh ip ospf d
OSPF Router with ID (7.7.7.7) (Process ID 10)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
5.5.5.5 5.5.5.5 473 0x80000002 0xD8E 2
7.7.7.7 7.7.7.7 473 0x8000001C 0xD4A7 2
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
55.55.55.55 5.5.5.5 1187 0x80000001 0x113A
r7#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
55.0.0.0/32 is subnetted, 1 subnets
O IA 55.55.55.55 [110/65] via 216.248.176.254, 00:07:46, Serial0.2
216.248.176.0/24 is variably subnetted, 2 subnets, 2 masks
C 216.248.176.252/30 is directly connected, Serial0.2
O 216.248.176.254/32 [110/64] via 216.248.176.254, 00:07:47,
Serial0.2
r7#
Stephen Feldberg
e ^ deltacom
phone: 678.835.5437
sfeldberg@edeltacom.com
"Albert Lu"
<albert_ccie@y To: <SFeldberg@edeltacom.com>
ahoo.com> cc: <ccielab@groupstudy.com>, "'Mi
ke Schlenger'"
<mschlenger@n2nsolutions.com>, "'Vinc
ent Zhang'"
12/03/2001 <vincentzhang@yahoo.com>
03:28 PM Subject: RE: AGAIN! IGRP OSPF redi
s (NEW FINDING!!)
Please respond
to albert_ccie
Steve,
I guess my main problem is trying to get an /24 IGRP domain to see my OSPF
domain's FR interface which is not a /24 that is in Area 0. Since IGRP
domain is stuck right onto Area 0, I can't use 'area 0 range' to summarise
it. If you put secondary addresses onto the FR interface, you are still
going to only get the /32 route of the FR secondary address.
Back in the ole' days of pre-12.1, you could redistribute connected which
will redistribute all interface's ip address, and do a summary address. Now
you can't.
Let me know if you found a solution =)
Thanks
Albert
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
SFeldberg@edeltacom.com
Sent: Tuesday, December 04, 2001 1:24 AM
To: albert_ccie@yahoo.com
Cc: ccielab@groupstudy.com; 'Mike Schlenger'; 'Vincent Zhang'
Subject: RE: AGAIN! IGRP OSPF redis (NEW FINDING!!)
Albert,
The way you have described your scenario is difficult to follow. Please
post more information including relevant configs.
Steve
"Albert Lu"
<albert_ccie@y To: <ccielab@groupstudy.com>
ahoo.com> cc: "'Mike Schlenger'"
<mschlenger@n2nsolutions.com>,
<SFeldberg@edeltacom.com>,
"'Vincent Zhang'" <vincentzhang@yahoo.com>
12/02/2001 Subject: RE: AGAIN! IGRP OSPF
redis (NEW FINDING!!)
12:56 AM
Please respond
to albert_ccie
Hello Group,
I think I've stumbled upon something with using secondary addresses,
redistribute connected and summary address in order to get the FLSM router
to see the route.
It works perfectly when you configure it, but after you reload your
routers,
the redistribution of the secondary address would not be done.
I had to remove the secondary address statement, and reenter it into the
interface, before the secondary address would be redistributed into OSPF
from the redistribute connected. Since it didn't redistribute after the
reload, it doesn't get summarised by the 'summary-address' statement.
Please tell me this is not happening, and I've made a big mistake. As I
don't know any other way of getting that route into FLSM router (area 0
range doesn't work, since IGRP is connected to Area 0).
Please don't give me any static, default, policy routing solution, as they
are not allowed.
Here's the interface config of a FR spoke:
Current configuration : 267 bytes
!
interface Serial0.2 multipoint
ip address 110.99.50.34 255.255.255.224 secondary
ip address 110.99.50.4 255.255.255.224
ip ospf authentication-key ipexpert
ip ospf network point-to-multipoint
frame-relay interface-dlci 405
frame-relay interface-dlci 406
end
router ospf 10
router-id 110.90.4.4
log-adjacency-changes
area 0 authentication
summary-address 110.99.50.0 255.255.255.0
redistribute connected metric-type 1 subnets route-map redis_conn
passive-interface default
no passive-interface Serial0.1
no passive-interface Serial0.2
network 110.90.4.0 0.0.0.255 area 0
network 110.99.40.0 0.0.0.255 area 0
network 110.99.50.0 0.0.0.31 area 0
!
access-list 10 deny 110.99.60.0
access-list 10 permit any
route-map redis_conn permit 10
match ip address 10
!
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
SFeldberg@edeltacom.com
Sent: Sunday, December 02, 2001 2:57 AM
To: Vincent Zhang
Cc: ccielab@groupstudy.com; Mike Schlenger; nobody@groupstudy.com
Subject: Re: AGAIN! IGRP OSPF redis
Vincent,
You must mean 12.0(20) as I am running the latest release of 12.1 code
which is 12.1(11).
Steve
"Vincent
Zhang" To: "Mike Schlenger"
<mschlenger@n2nsolutions.com>,
<vincentzhang@ <SFeldberg@edeltacom.com>
yahoo.com> cc: <ccielab@groupstudy.com>,
<nobody@groupstudy.com>
Subject: Re: AGAIN! IGRP OSPF
redis
11/30/2001
09:43 PM
Hi, Mark and Steve,
This does not work on my IOS ver 12.1(20), I heard that in some other 12.1
main version it works well.
Thanks, V
----- Original Message -----
From: <SFeldberg@edeltacom.com>
To: "Mike Schlenger" <mschlenger@n2nsolutions.com>
Cc: <ccielab@groupstudy.com>; <nobody@groupstudy.com>; "'Vincent Zhang'"
<vincentzhang@yahoo.com>
Sent: Saturday, December 01, 2001 3:41 AM
Subject: RE: AGAIN! IGRP OSPF redis
>
> Vincent,
>
> Here's what Mike's talking about:
>
> r2#sh run
> Building configuration...
>
> Current configuration : 438 bytes
> !
> version 12.1
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname r2
> !
> !
> !
> !
> !
> !
> ip subnet-zero
> !
> !
> !
> !
> !
> !
> interface Ethernet0
> no ip address
> shutdown
> !
> interface Serial0
> no ip address
> shutdown
> no fair-queue
> !
> interface Serial1
> ip address 172.16.1.1 255.255.255.0
> !
> router igrp 13
> network 172.16.0.0
> !
> ip classless
> ip http server
> !
> !
> !
> line con 0
> line aux 0
> line vty 0 4
> !
> end
>
> r2#sh ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter
> area
> * - candidate default, U - per-user static route, o - ODR
> P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 172.16.0.0/24 is subnetted, 2 subnets
> C 172.16.1.0 is directly connected, Serial1
> I 172.16.2.0 [100/10002001] via 172.16.1.13, 00:00:18, Serial1
> r2#
>
>
>
> Xyplex -012- LAB:13 session 2 resumed
>
> r1#sh run
> Building configuration...
>
> Current configuration : 952 bytes
> !
> version 12.1
> service timestamps debug uptime
> service timestamps log uptime
> no service password-encryption
> !
> hostname r1
> !
> !
> !
> !
> !
> !
> ip subnet-zero
> !
> !
> !
> !
> !
> !
> interface Loopback0
> ip address 13.13.13.13 255.255.255.255
> !
> interface Ethernet0
> no ip address
> shutdown
> !
> interface Serial0
> ip address 172.16.1.13 255.255.255.0
> no fair-queue
> clockrate 4000000
> !
> interface Serial1
> ip address 172.16.2.13 255.255.255.240
> clockrate 4000000
> !
> interface TokenRing0
> no ip address
> shutdown
> !
> router ospf 13
> log-adjacency-changes
> area 0 range 172.16.2.0 255.255.255.0
> network 13.13.13.13 0.0.0.0 area 13
> network 172.16.2.0 0.0.0.15 area 0
> !
> router igrp 13
> redistribute ospf 13 route-map o2i
> passive-interface Serial1
> network 172.16.0.0
> default-metric 1 1 1 1 1
> !
> ip classless
> ip http server
> !
> access-list 101 permit ip host 172.16.2.0 host 255.255.255.0
> route-map o2i permit 10
> match ip address 101
> !
> !
> !
> line con 0
> line aux 0
> line vty 0 4
> !
> end
>
> r1#sh ip route
> Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
inter
> area
> * - candidate default, U - per-user static route, o - ODR
> P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks
> C 172.16.1.0/24 is directly connected, Serial0
> O 172.16.2.0/24 is a summary, 00:01:07, Null0
> C 172.16.2.0/28 is directly connected, Serial1
> 13.0.0.0/32 is subnetted, 1 subnets
> C 13.13.13.13 is directly connected, Loopback0
> r1#u all
> All possible debugging has been turned off
> r1#
>
> Steve
>
>
>
> Mike Schlenger
> <mschlenger@n2nsolu To: "'Vincent Zhang'"
<vincentzhang@yahoo.com>,
> tions.com> ccielab@groupstudy.com
> Sent by: cc:
> nobody@groupstudy.c Subject: RE: AGAIN!
IGRP
OSPF redis
> om
>
>
> 11/30/2001 02:09 PM
> Please respond to
> Mike Schlenger
>
>
>
>
>
>
> You have to summarize your routes into a mask IGRP will understand.
Summary
> address will not work as it summarizes into OSPF areas. Try "area x range
> x.x.x.0 x.x.x.255". Then redistribute into IGRP. I would watch out for
the
> secondary address. Proctors might not like that solution.
>
> Mike
>
> Mike Schlenger
> CCIE #7079
> N2N Solutions
> mschlenger@n2nsolutions.com
> 847.592.3912
>
> -----Original Message-----
> From: Vincent Zhang [mailto:vincentzhang@yahoo.com]
> Sent: Friday, November 30, 2001 12:09 PM
> To: ccielab@groupstudy.com
> Subject: AGAIN! IGRP OSPF redis
>
>
> Hi All,
>
> Pls consider the following simple topology for redis OSPF into IGRP.
>
>
> s0 s1
> R2----------------------R1---------------------
> 172.16.1.0/24 172.16.2.0/28
>
> R2 runs IGRP only
> R1 runs IGRP on S0 and OSPF on S1, and there is a big OSPF cloud attached
> from
> S1.
> you are trying to redis ospf into igrp, in this case, I am talking how to
> redis the 172.16.2.0/28 into R1.
>
>
> I know in ios 12.1, the normal "redis connect" and "summary" way
doesn't
> work, but I also hear about that the "second address" works, any one
could
> show me a light about where to put the secondary address.
>
>
> Thanks, V
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:36 GMT-3