From: sanjay (ccienxtyear@xxxxxxxxxxx)
Date: Fri May 25 2001 - 16:46:22 GMT-3
Sorry to say this, but the 'no peer neighbor-route' command didn't work. I
have the configs of both routers below and also the routing table of both
routers. Also R4 doesn't have the route to 172.17.59.117 network thats
configured on a Token Ring interface on R2, and R2 is not learning any
routes to other routers except the Token Ring network thats on R4. Any ideas
what could be going on. It's got me running in cricles. Both routers are
connected back to back via serial and R4 is connected to the Frame cloud. R2
Token Ring is in Area 3, and the S0 interface in Area 2. R4 Token Ring and
S0 interface is in Area 2. The Frame Relay interface is in Area 0. Any
feedback is appreciated. Could be something very simple that I have
overlooked.
r4#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r4
!
enable password cisco
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Ethernet0
ip address 172.17.59.73 255.255.255.252
no ip directed-broadcast
shutdown
media-type 10BaseT
!
interface E
no ip address
no ip directed-broadcast
shutdown
media-type 10BaseT
!
interface Serial0
ip address 172.17.59.166 255.255.255.248
no ip directed-broadcast
encapsulation ppp
no ip mroute-cache
no peer neighbor-route
no fair-queue
!
interface Serial1
no ip address
no ip directed-broadcast
encapsulation frame-relay IETF
!
interface Serial1.100 point-to-point
ip address 172.17.59.2 255.255.255.240
no ip directed-broadcast
ip ospf message-digest-key 10 md5 cisco
ip ospf network broadcast
no arp frame-relay
frame-relay interface-dlci 100
!
interface TokenRing0
ip address 172.17.59.90 255.255.255.248
no ip directed-broadcast
ring-speed 4
!
interface TokenRing1
no ip address
no ip directed-broadcast
shutdown
!
router ospf 100
network 172.17.59.0 0.0.0.15 area 0
network 172.17.59.88 0.0.0.7 area 2
network 172.17.59.160 0.0.0.7 area 2
area 0 authentication message-digest
area 2 virtual-link 172.17.59.165
!
ip classless
!
!
!
line con 0
exec-timeout 60 0
transport input none
line aux 0
line vty 0 4
login
!
end
r4#sh ip rou
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
T - traffic engineered route
Gateway of last resort is not set
172.17.0.0/16 is variably subnetted, 5 subnets, 4 masks
C 172.17.59.165/32 is directly connected, Serial0
C 172.17.59.160/29 is directly connected, Serial0
C 172.17.59.0/28 is directly connected, Serial1.100
C 172.17.59.88/29 is directly connected, TokenRing0
O IA 172.17.59.100/30 [110/74] via 172.17.59.1, 00:09:16, Serial1.100
r2#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname r2
!
enable password cisco
!
ip subnet-zero
no ip domain-lookup
!
!
!
!
interface Ethernet0
no ip address
no ip directed-broadcast
shutdown
media-type 10BaseT
!
interface Ethernet1
no ip address
no ip directed-broadcast
shutdown
media-type 10BaseT
!
interface Serial0
ip address 172.17.59.165 255.255.255.248
no ip directed-broadcast
encapsulation ppp
no ip mroute-cache
no peer neighbor-route
clockrate 64000
!
interface Serial1
no ip address
no ip directed-broadcast
shutdown
!
interface Serial2
no ip address
no ip directed-broadcast
shutdown
!
interface Serial3
no ip address
no ip directed-broadcast
shutdown
!
interface TokenRing0
ip address 172.17.59.117 255.255.255.252
no ip directed-broadcast
ring-speed 4
!
interface TokenRing1
no ip address
no ip directed-broadcast
shutdown
!
router ospf 100
network 172.17.59.116 0.0.0.3 area 3
network 172.17.59.160 0.0.0.7 area 2
area 2 virtual-link 172.17.59.166
!
ip classless
!
!
!
line con 0
exec-timeout 60 0
transport input none
line aux 0
line vty 0 4
login
!
end
r2#
r2#sh ip rou
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
T - traffic engineered route
Gateway of last resort is not set
172.17.0.0/16 is variably subnetted, 4 subnets, 3 masks
C 172.17.59.166/32 is directly connected, Serial0
C 172.17.59.160/29 is directly connected, Serial0
O 172.17.59.88/29 [110/89] via 172.17.59.166, 00:06:09, Serial0
C 172.17.59.116/30 is directly connected, TokenRing0
r2#
----- Original Message -----
From: "Walter Chen" <wchen@iloka.com>
To: "'Pickell, Aaryn'" <Aaryn.Pickell@getronics.com>; "'sanjay'"
<ccienxtyear@hotmail.com>; <ccielab@groupstudy.com>
Sent: Friday, May 25, 2001 11:54 AM
Subject: RE: PPP Encapsulation and OSPF
> Aaryn was right that PPP will always install a host route of the other
side
> of the serial (or ISDN) link and "no peer nei" command can remove this
> route. This is because PPP is, after all, a point-to-point protocol. The
> host route guarantees connectivity between the end points of the link, no
> matter what address you put there. One side can be 10.1.1.1/24 and the
other
> side can be 200.2.2.2/28 and you can still ping each other. Of course, no
> dynamic routing protocol will work across this link.
>
> Walter
>
> -----Original Message-----
> From: Pickell, Aaryn [mailto:Aaryn.Pickell@getronics.com]
> Sent: Friday, May 25, 2001 2:40 PM
> To: 'sanjay'; ccielab@groupstudy.com
> Subject: RE: PPP Encapsulation and OSPF
>
>
> This isn't to do with OSPF. PPP will automatically install a host route
for
> the IP address of the other side of the link. Switching to HDLC doesn't
do
> this.
>
> You can use "no peer neighbor-route" to disable this. I think.
>
> Aaryn Pickell - CCNP ATM, CCDP, MCSE
> Senior Engineer - Routing Protocols
> Getronics Inc.
> Direct: 713-394-1609
> Email:aaryn.pickell@getronics.com
>
> This e-mail message and any attachments are confidential and may be
> privileged. If you are not the intended recipient, please notify me
> immediately by replying to this message and please destroy all copies of
> this message and attachments. Thank you.
>
>
> > -----Original Message-----
> > From: sanjay [mailto:ccienxtyear@hotmail.com]
> > Sent: Friday, May 25, 2001 1:16 PM
> > To: ccielab@groupstudy.com
> > Subject: PPP Encapsulation and OSPF
> >
> >
> > Hi,
> >
> > I have 2 routers back to back via serial connection. The
> > encapsulation on the
> > serial interface is PPP and the ip address is
> > 172.17.59.166/29. When I do a
> > show IP route, the route table shows 2 networks. One of them is
> > 172.17.59.166/32 and the second 172.17.59.160/29 (this is the
> > subnet between
> > the 2 routers). My question is why this behaviour when
> > running OSPF over PPP
> > on serial links. As soon as I changed the encapsualtion to HDLC, the
> > 172.17.59.166/32 is gone. Any ideas?
> >
> > thanks,
> > Sanjay
> > **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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