From: Tolulope Ogunsina (togunsina@gmail.com)
Date: Sat Nov 01 2008 - 19:50:43 ARST
---------- Forwarded message ----------
From: Tolulope Ogunsina <togunsina@gmail.com>
Date: Sat, 1 Nov 2008 02:43:51 +0100
Subject: OSPF over PPPoFR
To: Cisco certification <ccielab@groupstudy.com>
I couldnt solve IE Core lab 5 task 4.4 so i decided to run the PPPoFR
alone in a separate test lab.
I still have the same results.
Scenario: R5 is the hub of the FR circuit with connections on dlci's
501 and 502 to R1 and R2 respectively. they all run OSPF on the common
192.168.1.0 subnet.
R1 has loopback 0 (1.1.1.1) in area 0 and R2 has loopback 0 (2.2.2.2)
in area 125
Problem. R5 installs the same virtual-access as the exit interface for
the ospf routes learned regardless of the advertising router.
Configuration and show output below.
R1#sh run int s0/0.1
Building configuration...
Current configuration : 131 bytes
!
interface Serial0/0.1 multipoint
ip ospf network point-to-multipoint
frame-relay interface-dlci 105 ppp Virtual-Template1
end
R1#sh run int virtual-te 1
Building configuration...
Current configuration : 111 bytes
!
interface Virtual-Template1
ip address 192.168.1.1 255.255.255.0
ip ospf network point-to-multipoint
end
R1#sh run | sec router os
router ospf 1
log-adjacency-changes
network 192.168.1.1 0.0.0.0 area 125
R1#sh run int lo0
Building configuration...
Current configuration : 111 bytes
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
ip ospf network point-to-point
ip ospf 1 area 0
end
R2#sh run int s0/0.1
Building configuration...
Current configuration : 131 bytes
!
interface Serial0/0.1 multipoint
ip ospf network point-to-multipoint
frame-relay interface-dlci 205 ppp Virtual-Template1
end
R2#sh run int virtual-te1
Building configuration...
Current configuration : 111 bytes
!
interface Virtual-Template1
ip address 192.168.1.2 255.255.255.0
ip ospf network point-to-multipoint
end
R2#sh run | sec router os
router ospf 1
log-adjacency-changes
network 192.168.1.2 0.0.0.0 area 125
R2#sh run int lo0
Building configuration...
Current configuration : 113 bytes
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
ip ospf network point-to-point
ip ospf 1 area 125
end
R5 the HUB
R5#sh run int s0/0.1
Current configuration : 185 bytes
!
interface Serial0/0.1 multipoint
ip ospf network point-to-multipoint
frame-relay interface-dlci 501 ppp Virtual-Template1
frame-relay interface-dlci 502 ppp Virtual-Template1
end
R5#sh run int virtual-te1
Building configuration...
Current configuration : 111 bytes
!
interface Virtual-Template1
ip address 192.168.1.5 255.255.255.0
ip ospf network point-to-multipoint
end
R5#sh int virtual-acc 1
-output cut short--
Virtual-Access1 is up, line protocol is up
Bound to Serial0/0.1 DLCI 501, Cloned from Virtual-Template1, loopback not set
R5#sh int virtual-acc 2
Virtual-Access2 is up, line protocol is up
Bound to Serial0/0.1 DLCI 502, Cloned from Virtual-Template1, loopback not set
R5#sh run | sec router os
router ospf 1
log-adjacency-changes
network 192.168.1.5 0.0.0.0 area 125
R5#sh ip rou
Codes: C - connected, S - static, 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
i - IS-IS, su - IS-IS summary, 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
1.0.0.0/24 is subnetted, 1 subnets
O IA 1.1.1.0 [110/2] via 192.168.1.1, 00:33:43, Virtual-Access2
2.0.0.0/24 is subnetted, 1 subnets
O 2.2.2.0 [110/2] via 192.168.1.2, 00:33:43, Virtual-Access2
192.168.1.0/24 is variably subnetted, 3 subnets, 2 masks
C 192.168.1.1/32 is directly connected, Virtual-Access1
C 192.168.1.0/24 is directly connected, Virtual-Access2
is directly connected, Virtual-Access1
C 192.168.1.2/32 is directly connected, Virtual-Access2
R5#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/34/68 ms
R5#ping 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 0 percent (0/5)
IMO, R5 cant reach R1's loopback because it is using Virtual-Access2
(which is cloned to R2's loopback)
All opinions are HIGHLY welcome.
Thanks..
-- Best Regards,Tolulope.
-- Best Regards,
Tolulope.
Blogs and organic groups at http://www.ccie.net
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