From: Scott Morris (swm@xxxxxxxxxx)
Date: Wed Mar 06 2002 - 00:32:05 GMT-3
And what does router 1's table look like? Remember, routing works BOTH
directions! :)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jeongwoo Park
Sent: Tuesday, March 05, 2002 9:07 PM
To: 'ccielab@groupstudy.com'
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
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:56:54 GMT-3