From: Chris Larson (clarson52@comcast.net)
Date: Mon Sep 02 2002 - 14:06:56 GMT-3
I am having a similiar issue with the same topo and config. Only the IP
addresses are different and I am redistributing connected not rip.
The type 7 to the ABR is fine, but the ABR is not translating the 7's into
5's for the rest of the OSPF domain.
redistributeConnected ------>R1(area 3 nssa)-----area3-----R2(area 3
nssa ABR)----------area0------------
R1 is ASBR in area 3. R2 is ABR and has connection to area 0. R5 is in area
0 and does not have type 5 generated from R2.
R2#sh ip ospf dat ext
OSPF Router with ID (200.0.0.2) (Process ID 1)
Type-5 AS External Link States
Routing Bit Set on this LSA
LS age: 1905
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 150.50.4.0 (External Network Number )
Advertising Router: 200.0.0.8
LS Seq Number: 80000053
Checksum: 0xD7D8
Length: 36
Network Mask: /24
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0
External Route Tag: 0
This is from a different area
None of the other routers see any type 5's being generated from R2.
R2#sh ip ospf dat nssa-external
OSPF Router with ID (200.0.0.2) (Process ID 1)
Type-7 AS External Link States (Area 3)
LS age: 127
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 0.0.0.0 (External Network Number )
Advertising Router: 200.0.0.2
LS Seq Number: 80000002
Checksum: 0xEFF5
Length: 36
Network Mask: /0
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 1
Forward Address: 0.0.0.0
External Route Tag: 0
LS age: 1810
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 150.50.17.0 (External Network Number )
Advertising Router: 200.0.0.1
LS Seq Number: 80000002
Checksum: 0x346B
Length: 36
Network Mask: /24
Metric Type: 1 (Comparable directly to link state metric)
TOS: 0
Metric: 20
Forward Address: 150.50.17.1
External Route Tag: 0
LS age: 1813
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 150.50.18.0 (External Network Number )
Advertising Router: 200.0.0.1
LS Seq Number: 80000002
Checksum: 0x2975
Length: 36
Network Mask: /24
Metric Type: 1 (Comparable directly to link state metric)
TOS: 0
Metric: 20
Forward Address: 150.50.17.1
External Route Tag: 0
Routing Bit Set on this LSA
LS age: 1557
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 150.50.200.0 (External Network Number )
Advertising Router: 200.0.0.1
LS Seq Number: 80000004
Checksum: 0x3CAC
Length: 36
Network Mask: /22
Metric Type: 1 (Comparable directly to link state metric)
TOS: 0
Metric: 20
Forward Address: 150.50.17.1
External Route Tag: 0
Routing Bit Set on this LSA
LS age: 1821
Options: (No TOS-capability, No Type 7/5 translation, DC)
LS Type: AS External Link
Link State ID: 200.0.0.1 (External Network Number )
Advertising Router: 200.0.0.1
LS Seq Number: 80000002
Checksum: 0xB3FB
Length: 36
Network Mask: /32
Metric Type: 1 (Comparable directly to link state metric)
TOS: 0
Metric: 20
Forward Address: 150.50.17.1
External Route Tag: 0
R5#sh ip ospf dat external
OSPF Router with ID (200.0.0.5) (Process ID 1)
Type-5 AS External Link States
Routing Bit Set on this LSA
LS age: 60
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 150.50.4.0 (External Network Number )
Advertising Router: 200.0.0.8
LS Seq Number: 80000054
Checksum: 0xD5D9
Length: 36
Network Mask: /24
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0
External Route Tag: 0
CONFIGS::
hostname R1
!
netbios access-list host nofile deny FIL*
!
no ip subnet-zero
no ip domain-lookup
ipx routing 0001.0001.0001
!
!
!
!
!
interface Loopback0
ip address 200.0.0.1 255.255.255.255
no ip directed-broadcast
!
interface Ethernet0
ip address 150.50.200.1 255.255.255.0
ip helper-address 1.1.1.1
ip helper-address 1.1.1.2
no ip directed-broadcast
no keepalive
!
interface Ethernet1
ip address 150.50.17.1 255.255.255.0
no ip directed-broadcast
ipx network 12
ipx netbios input-access-filter host nofile
!
interface Serial0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
no fair-queue
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
interface Virtual-TokenRing0
ip address 150.50.18.1 255.255.255.0
no ip directed-broadcast
ip ospf network point-to-point
ring-speed 16
!
router ospf 1
area 3 nssa
summary-address 150.50.200.0 255.255.252.0
redistribute connected metric-type 1 subnets
network 150.50.17.0 0.0.0.255 area 3
network 150.50.18.0 0.0.0.255 area 3
!
ip nat translation timeout never
ip nat translation tcp-timeout never
ip nat translation udp-timeout never
ip nat translation finrst-timeout never
ip nat translation syn-timeout never
ip nat translation dns-timeout never
ip nat translation icmp-timeout never
ip classless
!
access-list 5 permit 200.0.0.1
access-list 5 permit 150.50.200.0 0.0.0.255
access-list 1001 deny FFFFFFFF 0
route-map conn permit 10
match ip address 5
!
route-map conn deny 20
!
!
!
!
ipx router eigrp 1
network 12
!
!
ipx router rip
no network all
!
!
!
!
line con 0
logging synchronous
transport input none
line aux 0
line vty 0 4
login
!
end
hostname R2
!
!
memory-size iomem 20
ip subnet-zero
no ip domain-lookup
!
!
!
!
!
interface Loopback0
ip address 200.0.0.2 255.255.255.255
no ip directed-broadcast
!
interface FastEthernet0/0
ip address 150.50.17.2 255.255.255.0
no ip directed-broadcast
!
interface Serial0/0
no ip address
no ip directed-broadcast
encapsulation frame-relay
no ip mroute-cache
no fair-queue
clockrate 56000
frame-relay traffic-shaping
frame-relay class classmap
!
interface Serial0/0.1 point-to-point
ip address 150.50.24.2 255.255.255.0
no ip directed-broadcast
ip ospf network point-to-multipoint
frame-relay interface-dlci 104
!
interface Serial0/0.2 multipoint
ip address 150.50.100.2 255.255.255.224
no ip directed-broadcast
ip ospf message-digest-key 1 md5 cisco
ip ospf network non-broadcast
frame-relay map ip 150.50.100.5 105 broadcast
frame-relay map ip 150.50.100.6 106 broadcast
!
interface BRI0/0
no ip address
no ip directed-broadcast
shutdown
!
router ospf 1
network 150.50.17.0 0.0.0.255 area 3
network 150.50.24.0 0.0.0.255 area 1
network 150.50.100.0 0.0.0.31 area 0
network 200.0.0.2 0.0.0.0 area 100
neighbor 150.50.100.5
neighbor 150.50.100.6
area 0 authentication message-digest
area 1 stub no-summary
area 3 nssa default-information-originate
!
ip classless
no ip http server
!
!
map-class frame-relay classmap
frame-relay cir 58000
no frame-relay adaptive-shaping
!
!
line con 0
transport input none
line aux 0
line vty 0 4
login
!
no scheduler allocate
end
hostname R5
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
cns event-service server
!
!
!
!
!
interface Loopback0
ip address 200.0.0.5 255.255.255.255
no ip directed-broadcast
!
interface Ethernet0
ip address 150.50.7.5 255.255.255.128
no ip directed-broadcast
ip ospf message-digest-key 1 md5 cisco
!
interface Serial0
ip address 150.50.100.5 255.255.255.224
no ip directed-broadcast
encapsulation frame-relay
ip ospf message-digest-key 1 md5 cisco
ip ospf priority 0
no ip mroute-cache
frame-relay map ip 150.50.100.2 501 broadcast
frame-relay map ip 150.50.100.6 501 broadcast
frame-relay lmi-type cisco
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
router ospf 1
area 0 authentication message-digest
network 150.50.7.0 0.0.0.127 area 0
network 150.50.100.0 0.0.0.31 area 0
network 200.0.0.5 0.0.0.0 area 100
!
ip classless
no ip http server
!
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
end
----- Original Message -----
From: "Landon Fitts" <l.fitts@mindspring.com>
To: "Keith Steller" <ksteller@attbi.com>; <ccielab@groupstudy.com>
Sent: Monday, September 02, 2002 12:25 PM
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#
> > _________________________________________________________________
> > Commercial lab list: http://www.groupstudy.com/list/commercial.html
> > Please discuss commercial lab solutions on this list.
> _________________________________________________________________
> Commercial lab list: http://www.groupstudy.com/list/commercial.html
> Please discuss commercial lab solutions on this list.
This archive was generated by hypermail 2.1.4 : Mon Oct 07 2002 - 07:43:41 GMT-3