Re: It is in the routing table, but Can't ping it

From: Mohamed I. Lubbad (mlubbad@xxxxxxxxxxx)
Date: Wed Mar 06 2002 - 07:25:51 GMT-3


   
Sorry Guys I have pasted R3's routing table twice. Here are the tables:

R1 running c2600-d-mz.113-8.T1.bin:
Gateway of last resort is not set
     172.16.0.0/16 is variably subnetted, 7 subnets, 2 masks
R 172.16.20.0/24 [120/2] via 172.16.4.1, 00:00:01, Serial0/0.1
R 172.16.20.1/32 [120/2] via 172.16.4.1, 00:00:01, Serial0/0.1
C 172.16.4.0/24 is directly connected, Serial0/0.1
R 172.16.5.0/24 [120/1] via 172.16.4.1, 00:00:01, Serial0/0.1
C 172.16.6.0/24 is directly connected, Loopback0
C 172.16.7.0/24 is directly connected, Loopback1
R 172.16.1.0/24 [120/2] via 172.16.4.1, 00:00:01, Serial0/0.1

R2 running c3640-jos56i-mz_120-4_T.bin:
Gateway of last resort is not set
     172.16.0.0/16 is variably subnetted, 8 subnets, 3 masks
O E2 172.16.20.0/24 [110/20] via 172.16.1.2, Serial1/1
O 172.16.20.1/32 [110/65] via 172.16.1.2, Serial1/1
C 172.16.4.0/24 is directly connected, Serial1/0
C 172.16.5.0/24 is directly connected, Loopback0
R 172.16.6.0/24 [120/1] via 172.16.4.2, Serial1/0
R 172.16.7.0/24 [120/1] via 172.16.4.2, Serial1/0
O 172.16.1.0/24 is a summary, Null0
C 172.16.1.0/30 is directly connected, Serial1/1

R3 running c2500-ins-l.120-21.bin:
Gateway of last resort is not set
     172.16.0.0/16 is variably subnetted, 9 subnets, 3 masks
O 172.16.20.0/24 is a summary, 04:18:04, Null0
C 172.16.20.0/28 is directly connected, Loopback0
O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:00:05, Serial1
C 172.16.20.16/28 is directly connected, Loopback1
O E2 172.16.5.0/24 [110/30] via 172.16.1.1, 00:00:05, Serial1
O E2 172.16.6.0/24 [110/30] via 172.16.1.1, 00:00:05, Serial1
O E2 172.16.7.0/24 [110/30] via 172.16.1.1, 00:00:05, Serial1
O E2 172.16.1.0/24 [110/30] via 172.16.1.1, 00:00:05, Serial1
C 172.16.1.0/30 is directly connected, Serial1

On R3, the line :
 O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1

 Is coming from RIP redistributed into OSPf as 172.16.4.0 isn't in R2's OSPF
process.

Here you are the successful pings from R3:
R3#ping 172.16.6.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.6.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 88/88/88 ms
R3#ping 172.16.7.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.7.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 88/88/88 ms
R3#ping 172.16.5.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.5.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/31/40 ms
R3#ping 172.16.4.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.4.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/29/32 ms
R3#ping 172.16.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/31/32 ms
R3#

Sorry Again

  Mohamed I. Lubbad

----- Original Message -----
From: "Tshon" <tshon@netzero.net>
To: "Mohamed I. Lubbad" <mlubbad@hotmail.com>
Cc: "Jeongwoo Park" <Jpark@wams.com>; <ccielab@groupstudy.com>
Sent: Wednesday, March 06, 2002 11:00
Subject: Re: It is in the routing table, but Can't ping it

> what version of ios are you using...... your router should be confused...
>
> can you show a successful ping?
>
> issues on R2 and R3
>
> O E2 172.16.1.0/24 [110/30] via 172.16.1.1, 00:12:07, Serial1
> C 172.16.1.0/30 is directly connected, Serial1
>
> O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1
>
>
>
> Mohamed I. Lubbad wrote:
>
> >I have just copied and pasted your config on my routers and it is working
> >fine, here are the routing tables:
> >
> >R1:
> >Gateway of last resort is not set
> > 172.16.0.0/16 is variably subnetted, 7 subnets, 2 masks
> >R 172.16.20.0/24 [120/2] via 172.16.4.1, 00:00:16, Serial0/0.1
> >R 172.16.20.1/32 [120/2] via 172.16.4.1, 00:00:16, Serial0/0.1
> >C 172.16.4.0/24 is directly connected, Serial0/0.1
> >R 172.16.5.0/24 [120/1] via 172.16.4.1, 00:00:16, Serial0/0.1
> >C 172.16.6.0/24 is directly connected, Loopback0
> >C 172.16.7.0/24 is directly connected, Loopback1
> >R 172.16.1.0/24 [120/2] via 172.16.4.1, 00:00:16, Serial0/0.1
> >
> >R2:
> >Gateway of last resort is not set
> > 172.16.0.0/16 is variably subnetted, 9 subnets, 3 masks
> >O 172.16.20.0/24 is a summary, 00:16:02, Null0
> >C 172.16.20.0/28 is directly connected, Loopback0
> >O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1
> >C 172.16.20.16/28 is directly connected, Loopback1
> >O E2 172.16.5.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1
> >O E2 172.16.6.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1
> >O E2 172.16.7.0/24 [110/30] via 172.16.1.1, 00:19:28, Serial1
> >O E2 172.16.1.0/24 [110/30] via 172.16.1.1, 00:12:07, Serial1
> >C 172.16.1.0/30 is directly connected, Serial1
> >
> >R3:
> >Gateway of last resort is not set
> > 172.16.0.0/16 is variably subnetted, 9 subnets, 3 masks
> >O 172.16.20.0/24 is a summary, 00:16:34, Null0
> >C 172.16.20.0/28 is directly connected, Loopback0
> >O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:20:00, Serial1
> >C 172.16.20.16/28 is directly connected, Loopback1
> >O E2 172.16.5.0/24 [110/30] via 172.16.1.1, 00:20:00, Serial1
> >O E2 172.16.6.0/24 [110/30] via 172.16.1.1, 00:20:00, Serial1
> >O E2 172.16.7.0/24 [110/30] via 172.16.1.1, 00:20:00, Serial1
> >O E2 172.16.1.0/24 [110/30] via 172.16.1.1, 00:12:39, Serial1
> >C 172.16.1.0/30 is directly connected, Serial1
> >
> >
> >
> > Mohamed Lubbad
> >
> >
> >----- Original Message -----
> >From: "Jeongwoo Park" <Jpark@wams.com>
> >To: <ccielab@groupstudy.com>
> >Sent: Wednesday, March 06, 2002 05:06
> >Subject: It is in the routing table, but Can't ping it
> >
> >
> >>Here is the layout.
> >>R1----R2-----R3.
> >>On R3 I have the routes 172.16.6.1 and 172.16.7.1,which are R1's
loopback
> >>interfaces.
> >>But I can't ping those interfaces from R3.
> >>
> >>Here is config.
> >>R1#wr t
> >>#######
> >>Current configuration:
> >>!
> >>version 10.2
> >>service tcp-small-servers
> >>
> >>hostname R1
> >>!
> >>enable password wams
> >>!
> >>ip subnet-zero
> >>!
> >>interface Loopback0
> >>ip address 172.16.6.1 255.255.255.0
> >>!
> >>interface Loopback1
> >>ip address 172.16.7.1 255.255.255.0
> >>!
> >>interface Ethernet0
> >>no ip address
> >>shutdown
> >>!
> >>interface Ethernet1
> >>no ip address
> >>shutdown
> >>!
> >>interface Serial0
> >>ip address 172.16.4.2 255.255.255.0
> >>shutdown
> >>!
> >>interface Serial1
> >>ip address 172.16.4.2 255.255.255.0
> >>!
> >>router rip
> >>network 172.16.0.0
> >>!
> >>ip host R2 172.16.5.1
> >>ip host R3 172.16.20.1
> >>ip classless
> >>!
> >>line con 0
> >>line aux 0
> >>transport input all
> >>line vty 0 4
> >>exec-timeout 0 0
> >>password wams
> >>login
> >>telnet transparent
> >>line vty 5 15
> >>login
> >>!
> >>end
> >>
> >>R2#wr t
> >>Building configuration...
> >>
> >>Current configuration : 1081 bytes
> >>!
> >>version 12.1
> >>service timestamps debug uptime
> >>service timestamps log uptime
> >>no service password-encryption
> >>!
> >>hostname R2
> >>!
> >>!
> >>!
> >>!
> >>!
> >>!
> >>ip subnet-zero
> >>ip host R3 172.16.20.1
> >>ip host R1 172.16.6.1
> >>!
> >>!
> >>!
> >>!
> >>interface Loopback0
> >> ip address 172.16.5.1 255.255.255.0
> >>!
> >>interface Ethernet0
> >> no ip address
> >> shutdown
> >>!
> >>interface Serial0
> >> ip address 172.16.1.1 255.255.255.252
> >> no fair-queue
> >> clockrate 500000
> >>!
> >>interface Serial1
> >> ip address 172.16.4.1 255.255.255.0
> >> clockrate 500000
> >>!
> >>interface BRI0
> >> no ip address
> >> shutdown
> >> isdn x25 static-tei 0
> >>!
> >>router ospf 1
> >> log-adjacency-changes
> >> summary-address 172.16.1.0 255.255.255.0
> >> summary-address 172.16.20.0 255.255.255.0
> >> redistribute rip metric 30 subnets
> >> network 172.16.1.0 0.0.0.3 area 0
> >>!
> >>router rip
> >> redistribute ospf 1
> >> passive-interface Serial0
> >> network 172.16.0.0
> >> default-metric 2
> >>!
> >>ip classless
> >>ip http server
> >>!
> >>alias exec r sh ip route
> >>!
> >>line con 0
> >> exec-timeout 0 0
> >> password wams
> >>line aux 0
> >>line vty 0 2
> >> exec-timeout 0 0
> >> privilege level 15
> >> password wams
> >> login
> >>line vty 3 4
> >> privilege level 15
> >> password wams
> >> login
> >>!
> >>end
> >>
> >>R3#wr t
> >>Building configuration...
> >>
> >>Current configuration : 915 bytes
> >>!
> >>version 12.2
> >>service timestamps debug uptime
> >>service timestamps log uptime
> >>no service password-encryption
> >>!
> >>hostname R3
> >>!
> >>enable password wams
> >>!
> >>ip subnet-zero
> >>!
> >>!
> >>no ip domain-lookup
> >>ip host R2 172.16.5.1
> >>ip host R1 172.16.6.1
> >>!
> >>!
> >>!
> >>!
> >>interface Loopback0
> >> ip address 172.16.20.1 255.255.255.240
> >>!
> >>interface Loopback1
> >> ip address 172.16.20.17 255.255.255.240
> >>!
> >>interface Ethernet0/0
> >> no ip address
> >> shutdown
> >> half-duplex
> >>!
> >>interface Serial0/0
> >> ip address 172.16.1.2 255.255.255.252
> >>!
> >>interface Ethernet0/1
> >> no ip address
> >> shutdown
> >> half-duplex
> >>!
> >>router ospf 1
> >> log-adjacency-changes
> >> summary-address 172.16.20.0 255.255.255.0
> >> redistribute connected subnets
> >> network 172.16.1.0 0.0.0.3 area 0
> >> network 172.16.20.0 0.0.0.15 area 0
> >>!
> >>ip classless
> >>ip http server
> >>!
> >>alias exec r sh ip route
> >>!
> >>line con 0
> >>line aux 0
> >> transport input all
> >>line vty 0 4
> >> exec-timeout 0 0
> >> password wams
> >> login
> >>line vty 5 15
> >> login
> >>!
> >>end
> >>
> >>R3's routing table
> >>R3#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, 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, 8 subnets, 3 masks
> >>O 172.16.20.0/24 is a summary, 00:35:06, Null0
> >>C 172.16.20.0/28 is directly connected, Loopback0
> >>O E2 172.16.4.0/24 [110/30] via 172.16.1.1, 00:29:00, Serial0/0
> >>C 172.16.20.16/28 is directly connected, Loopback1
> >>O E2 172.16.5.0/24 [110/30] via 172.16.1.1, 00:29:00, Serial0/0
> >>O E2 172.16.6.0/24 [110/30] via 172.16.1.1, 00:29:00, Serial0/0
> >>O E2 172.16.7.0/24 [110/30] via 172.16.1.1, 00:29:00, Serial0/0
> >>C 172.16.1.0/30 is directly connected, Serial0/0
> >>R3#
> >>R3#ping 172.16.6.1
> >>
> >>Type escape sequence to abort.
> >>Sending 5, 100-byte ICMP Echos to 172.16.6.1, timeout is 2 seconds:
> >>.....
> >>Success rate is 0 percent (0/5)
> >>R3#
> >>
> >>Thanks in adv.
> >>
> >>JP



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