From: Nick Shah (nshah@xxxxxxxxxxxxxx)
Date: Mon May 27 2002 - 03:44:28 GMT-3
there is a good url for understanding ip unnumbered behaviour with routing
protocols & routing as such...
http://www.cisco.com/warp/public/701/20.html
watch the wrap
Nick
----- Original Message -----
From: "mize" <mize@netbuddy.org>
To: <ccielab@groupstudy.com>
Sent: Monday, May 27, 2002 3:53 PM
Subject: Re: Please confirm (conf#e0b3f2f855f80aa545d6348a76c3865b)
> >Hi,
> >
> >You have tried to post to GroupStudy.com's CCIELab mailing list. Because
the
> >server does not recognize you as a confirmed poster, you will be required
to
> >authenticate that you are using a valid e-mail address and are not a
> >spammer.
> >
> >PLEASE DO NOT SEND YOUR ORIGINAL MESSAGE AGAIN! BY CONFIRMING THIS EMAIL
> >YOUR ORIGINAL MESSAGE (WHICH IS NOW QUEUED IN THE SERVER) WILL BE POSTED.
> >
> >By confirming this e-mail you certify that you understand the following:
> >
> >1. The message does NOT break Cisco's Non-Disclosure requirements.
> >
> >2. The message is NOT designed to advertise a commercial product.
> >
> >3. All postings become property of GroupStudy.com
> >
> >4. You have searched the archives prior to posting.
> >
> >5. The message is NOT inflammatory.
> >
> >6. The message is NOT a test message.
> >
> >To confirm, simply reply to this message. No editing is necessary. Once
> >confirmed, you will be able to post without additional confirmations.
> >
> >
> >Welcome to GroupStudy.com!
> >
> >
> >------ORIGINAL MESSAGE---------
> >
> >From mize@netbuddy.org Mon May 27 01:46:15 2002
> >Received: from saga.netbuddy.org ([61.131.96.50])
> > by groupstudy.com (8.9.3/8.9.3) with SMTP id BAA16603
> > GroupStudy Mailer; Mon, 27 May 2002 01:46:13 -0400
> >Message-Id: <200205270546.BAA16603@groupstudy.com>
> >Received: (qmail 13773 invoked from network); 27 May 2002 17:40:46 -0000
> >Received: from unknown (HELO M) (@61.174.133.253)
> > by 61.131.96.50 with SMTP; 27 May 2002 17:40:46 -0000
> >Date: Mon, 27 May 2002 13:46:18 +0800
> >From: "mize" <mize@netbuddy.org>
> >To: Michael Snyder <msnyder@ldd.net>
> >CC: "ccielab@groupstudy.com" <ccielab@groupstudy.com>
> >Subject: Re: This one will make your head hurt.
> >X-mailer: Foxmail 4.1 [cn]
> >Mime-Version: 1.0
> >Content-Type: text/plain;
> > charset="GB2312"
> >Content-Transfer-Encoding: 8bit
> >X-MIME-Autoconverted: from quoted-printable to 8bit by groupstudy.com id
BAA16603
> >
> >Wonderful scenario but the reason is simple - OSPF in running on Tunnel 0
interface.
> >
> >!!!!
> >>I'll let you figure it out. First take note that I can ping networks
> >>1.1.1.1 and 3.3.3.3. Second notice that ospf has no subnets or
> >>neighbors in common. None! Yet a full ospf database.
> >>
> >>
> >>A#show run
> >>Building configuration...
> >>!
> >>hostname A
> >>!
> >>interface Loopback0
> >> ip address 1.1.1.1 255.255.255.0
> >> ip ospf network point-to-point
> >>!
> >>interface Loopback1
> >> ip address 2.2.2.2 255.255.255.0
> >> ip ospf network point-to-point
> >>!
> >>interface Tunnel0
> >> ip unnumbered Loopback1
> >> tunnel source Loopback1
> >> tunnel destination 4.4.4.4
> >>!
> >>interface Serial1
> >> ip address 10.0.0.1 255.255.255.252
> >> clockrate 56000
> >>!
> >>router ospf 80
> >> log-adjacency-changes
> >> network 1.1.1.0 0.0.0.255 area 1
> >> network 2.2.2.0 0.0.0.255 area 0
> >>!
> >>ip route 4.4.4.0 255.255.255.0 Serial1
> >>
> >>A#si
> >>
> >>Gateway of last resort is not set
> >>
> >> 1.0.0.0/24 is subnetted, 1 subnets
> >>C 1.1.1.0 is directly connected, Loopback0
> >> 2.0.0.0/24 is subnetted, 1 subnets
> >>C 2.2.2.0 is directly connected, Loopback1
> >> 3.0.0.0/24 is subnetted, 1 subnets
> >>O IA 3.3.3.0 [110/11112] via 4.4.4.4, 00:07:13, Tunnel0
> >> 4.0.0.0/24 is subnetted, 1 subnets
> >>S 4.4.4.0 is directly connected, Serial1
> >> 10.0.0.0/30 is subnetted, 1 subnets
> >>C 10.0.0.0 is directly connected, Serial1
> >>A#p 3.3.3.3
> >>
> >>Type escape sequence to abort.
> >>Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
> >>!!!!!
> >>Success rate is 100 percent (5/5), round-trip min/avg/max = 40/40/40 ms
> >>A#show ip ospf n
> >>
> >>Neighbor ID Pri State Dead Time Address
> >>Interface
> >>4.4.4.4 1 FULL/ - 00:00:38 4.4.4.4
> >>Tunnel0
> >>A#show ip ospf d
> >>
> >> OSPF Router with ID (2.2.2.2) (Process ID 80)
> >>
> >>
> >> Router Link States (Area 0)
> >>
> >>Link ID ADV Router Age Seq# Checksum Link
> >>count
> >>2.2.2.2 2.2.2.2 459 0x80000015 0xC28B 2
> >>4.4.4.4 4.4.4.4 460 0x80000002 0x2A26 2
> >>
> >> Summary Net Link States (Area 0)
> >>
> >>Link ID ADV Router Age Seq# Checksum
> >>1.1.1.0 2.2.2.2 496 0x80000001 0x33FD
> >>3.3.3.0 4.4.4.4 455 0x80000002 0xAC75
> >>
> >> Router Link States (Area 1)
> >>
> >>Link ID ADV Router Age Seq# Checksum Link
> >>count
> >>2.2.2.2 2.2.2.2 233 0x80000004 0x77A3 1
> >>
> >> Summary Net Link States (Area 1)
> >>
> >>Link ID ADV Router Age Seq# Checksum
> >>2.2.2.0 2.2.2.2 791 0x80000001 0xF1F
> >>3.3.3.0 2.2.2.2 455 0x80000001 0x791F
> >>4.4.4.0 2.2.2.2 455 0x80000001 0x5540
> >>A#
> >>
> >>
> >>
> >>
> >>
> >>C#show run
> >>Building configuration...
> >>!
> >>hostname C
> >>!
> >>!
> >>!
> >>interface Loopback0
> >> ip address 3.3.3.3 255.255.255.0
> >> ip ospf network point-to-point
> >>!
> >>interface Loopback1
> >> ip address 4.4.4.4 255.255.255.0
> >> ip ospf network point-to-point
> >>!
> >>interface Tunnel0
> >> ip unnumbered Loopback1
> >> tunnel source Loopback1
> >> tunnel destination 2.2.2.2
> >>!
> >>interface Ethernet0
> >> no ip address
> >>!
> >>interface Serial1
> >> ip address 10.0.0.2 255.255.255.252
> >>!
> >>router ospf 80
> >> log-adjacency-changes
> >> network 3.3.3.0 0.0.0.255 area 2
> >> network 4.4.4.0 0.0.0.255 area 0
> >>!
> >>ip classless
> >>ip route 2.2.2.0 255.255.255.0 Serial1
> >>!
> >>end
> >>
> >>C#show 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
> >>
> >> 1.0.0.0 0xFFFFFF00 is subnetted, 1 subnets
> >>O IA 1.1.1.0 [110/11112] via 2.2.2.2, 00:05:27, Tunnel0
> >> 2.0.0.0 0xFFFFFF00 is subnetted, 1 subnets
> >>S 2.2.2.0 is directly connected, Serial1
> >> 3.0.0.0 0xFFFFFF00 is subnetted, 1 subnets
> >>C 3.3.3.0 is directly connected, Loopback0
> >> 4.0.0.0 0xFFFFFF00 is subnetted, 1 subnets
> >>C 4.4.4.0 is directly connected, Loopback1
> >> 10.0.0.0 0xFFFFFFFC is subnetted, 1 subnets
> >>C 10.0.0.0 is directly connected, Serial1
> >>C#p 1.1.1.1
> >>
> >>Type escape sequence to abort.
> >>Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
> >>!!!!!
> >>Success rate is 100 percent (5/5), round-trip min/avg/max = 44/50/64 ms
> >>C#show ip ospf nei
> >>
> >>Neighbor ID Pri State Dead Time Address
> >>Interface
> >>2.2.2.2 1 FULL/ - 00:00:37 2.2.2.2
> >>Tunnel0
> >>C#show ip ospf data
> >>
> >> OSPF Router with ID (4.4.4.4) (Process ID 80)
> >>
> >>
> >> Router Link States (Area 0)
> >>
> >>Link ID ADV Router Age Seq# Checksum Link
> >>count
> >>2.2.2.2 2.2.2.2 367 0x80000015 0xC28B 2
> >>4.4.4.4 4.4.4.4 367 0x80000002 0x2A26 2
> >>
> >> Summary Net Link States (Area 0)
> >>
> >>Link ID ADV Router Age Seq# Checksum
> >>1.1.1.0 2.2.2.2 404 0x80000001 0x33FD
> >>3.3.3.0 4.4.4.4 362 0x80000002 0xAC75
> >>
> >> Router Link States (Area 2)
> >>
> >>Link ID ADV Router Age Seq# Checksum Link
> >>count
> >>4.4.4.4 4.4.4.4 376 0x80000001 0x15F2 1
> >>
> >> Summary Net Link States (Area 2)
> >>
> >>Link ID ADV Router Age Seq# Checksum
> >>1.1.1.0 4.4.4.4 356 0x80000001 0x8511
> >>2.2.2.0 4.4.4.4 358 0x80000001 0x6132
> >>4.4.4.0 4.4.4.4 368 0x80000001 0x8A95
> >>C#
> >
> >
> >
> >
> >
> >.
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:59:09 GMT-3