From: Peter van Oene (pvo@usermail.com)
Date: Mon Sep 02 2002 - 14:16:20 GMT-3
As I said, lets see the LSDB on R5. I expect it can't reach the forwarding
address for the type 5's.
At 11:58 AM 9/2/2002 -0500, Keith Steller wrote:
>Thanks for the responses Landon and Pete. Shouldn't those type 7's be
>converted to type 5's though. I cant see those routes period. I could be
>missing something.
>
>Thanks again!
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Landon Fitts
>Sent: Monday, September 02, 2002 11:26 AM
>To: Keith Steller; ccielab@groupstudy.com
>Subject: Re: NSSA and type 7 LSA's
>
>
>Keith.
>
>This is correct behavior. The ASBR that is part of the NSSA sends the RIP
>routes as LSA type 7 (N2/N1), but the ABR sends those LSAs out as type 5
>(E2/E1) into the backbone. The type 7 LSAs are only distributed within the
>NSSA area.
>
>Landon
>
>----- Original Message -----
>From: "Keith Steller" <ksteller@attbi.com>
>To: <ccielab@groupstudy.com>
>Sent: Monday, September 02, 2002 11:26 AM
>Subject: NSSA and type 7 LSA's
>
>
> > Hello All-
> >
> > I have a question for someone. I have an NSSA configured to allow
> > redistibution of a few RIP routes into the OSPF net. I have everything
> > working fine except for one thing. I can see the RIP routes, denoted by
>the
> > N2 in the routing table on the ABR where the "Area X NSSA" is configured.
>I
> > dont see those type 7 routes being advertised to other routers in the OSPF
> > network though. I'm wondering if that's correct behavior. I can get
> > connectivity to the RIP net (146.10.18.x) when I add the "default
> > information originate always" on the ABR with the NSSA, as he can see the
> > RIP routes from there. With that configured, everyone sends packets to him
> > when they dont have a route available. Shouldnt the NSSA allow the RIP
> > network to be advrtised to all routers in the OSPF network? I attached the
> > configs below. R1 is the ASBR with RIP and OSPF. R2 is the other end of
>the
> > NSSA ABR (connected to Area 0), and R5 is also on th backbone on area 0.
> >
> > Thanks for the assistance,
> >
> > Keith
> >
> > R1
> > !
> > router ospf 100
> > redistribute rip subnets
> > passive-interface TokenRing0
> > network 146.10.11.0 0.0.0.255 area 11
> > network 146.10.21.0 0.0.0.3 area 21
> > default-metric 5
> > area 11 range 146.10.11.0 255.255.255.0
> > area 21 nssa
> > !
> > router rip
> > version 1
> > redistribute ospf 100 metric 10
> > passive-interface Loopback100
> > passive-interface Serial1
> > network 146.10.0.0
> > neighbor 146.10.18.8
> > !
> > 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, * - candidate
> > default
> > U - per-user static route, o - ODR
> >
> > Gateway of last resort is 146.10.21.2 to network 0.0.0.0
> >
> > 146.10.0.0/16 is variably subnetted, 6 subnets, 2 masks
> > C 146.10.18.0/24 is directly connected, TokenRing0
> > C 146.10.21.0/30 is directly connected, Serial1
> > C 146.10.11.0/24 is directly connected, Loopback100
> > R 146.10.88.0/24 [120/1] via 146.10.18.8, 00:00:17, TokenRing0
> > R 146.10.78.0/24 [120/1] via 146.10.18.8, 00:00:17, TokenRing0
> > C 146.10.118.0/24 is directly connected, Loopback200
> > O*IA 0.0.0.0/0 [110/65] via 146.10.21.2, 00:12:41, Serial1
> > r1#
> > ***************************************
> > R2
> > !
> > router ospf 100
> > network 146.10.10.0 0.0.0.255 area 0
> > network 146.10.21.0 0.0.0.3 area 21
> > network 146.10.22.0 0.0.0.255 area 22
> > neighbor 146.10.10.6 priority 1
> > neighbor 146.10.10.5 priority 5
> > default-information originate always
> > area 21 nssa default-information-originate no-summary
> > area 22 range 146.10.22.0 255.255.255.0
> > !
> >
> > 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, * - candidate
> > default
> > U - per-user static route, o - ODR
> >
> > Gateway of last resort is not set
> >
> > 146.10.0.0/16 is variably subnetted, 12 subnets, 3 masks
> > C 146.10.24.0/24 is directly connected, Serial0.1
> > O N2 146.10.18.0/24 [110/5] via 146.10.21.1, 00:14:30, Serial1
> > C 146.10.21.0/30 is directly connected, Serial1
> > C 146.10.22.0/24 is directly connected, Loopback100
> > C 146.10.10.0/24 is directly connected, Serial0
> > O N2 146.10.11.0/24 [110/5] via 146.10.21.1, 00:14:30, Serial1
> > O IA 146.10.57.0/25 [110/74] via 146.10.10.6, 00:14:30, Serial0
> > [110/74] via 146.10.10.5, 00:14:30, Serial0
> > O IA 146.10.55.0/24 [110/65] via 146.10.10.5, 00:14:30, Serial0
> > O N2 146.10.88.0/24 [110/5] via 146.10.21.1, 00:14:30, Serial1
> > O N2 146.10.78.0/24 [110/5] via 146.10.21.1, 00:14:30, Serial1
> > O IA 146.10.66.0/24 [110/65] via 146.10.10.6, 00:14:30, Serial0
> > O N2 146.10.118.0/24 [110/5] via 146.10.21.1, 00:14:30, Serial1
> > r2#
> > Type-7 AS External Link States (Area 21)
> >
> > Link ID ADV Router Age Seq# Checksum Tag
> > 146.10.11.0 146.10.118.1 445 0x80000002 0xF944 0
> > 146.10.18.0 146.10.118.1 445 0x80000002 0xAC8A 0
> > 146.10.21.0 146.10.118.1 445 0x80000002 0x79BD 0
> > 146.10.78.0 146.10.118.1 445 0x80000002 0x16E4 0
> > 146.10.88.0 146.10.118.1 445 0x80000002 0xA749 0
> > 146.10.118.0 146.10.118.1 445 0x80000002 0x5C76 0
> > ****************************************************
> > R5
> > !
> > router ospf 100
> > network 146.10.10.0 0.0.0.255 area 0
> > network 146.10.55.0 0.0.0.255 area 55
> > network 146.10.57.0 0.0.0.127 area 57
> > neighbor 146.10.10.2 priority 10
> > area 55 range 146.10.55.0 255.255.255.0
> > !
> > 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, * - candidate
> > default
> > U - per-user static route, o - ODR
> >
> > Gateway of last resort is 146.10.10.2 to network 0.0.0.0
> >
> > 146.10.0.0/16 is variably subnetted, 6 subnets, 3 masks
> > O IA 146.10.21.0/30 [110/128] via 146.10.10.2, 00:16:28, Serial0.501
> > O IA 146.10.22.0/24 [110/65] via 146.10.10.2, 00:16:28, Serial0.501
> > C 146.10.10.0/24 is directly connected, Serial0.501
> > C 146.10.57.0/25 is directly connected, Ethernet0
> > C 146.10.55.0/24 is directly connected, Loopback55
> > O IA 146.10.66.0/24 [110/65] via 146.10.10.6, 00:16:28, Serial0.501
> > 146.100.0.0/24 is subnetted, 1 subnets
> > C 146.100.55.0 is directly connected, Loopback100
> > O*E2 0.0.0.0/0 [110/1] via 146.10.10.2, 00:16:21, Serial0.501
> > r5#
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