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IPv6 IPv4 network interconnection.

here is the Router configuration

r1# sh run

no ip domain lookup

!

ipv6 unicast-routing

!

!

!

interface Tunnel0

no ip address

ipv6 address 5001::6001/120

ipv6 ospf 100 area 0

tunnel source Serial2/0

tunnel destination 200.1.1.1

tunnel mode ipv6ip

!

interface Loopback0

no ip address

ipv6 address 2001::3001/121

ipv6 ospf 100 area 0

!

interface FastEthernet0/0

no ip address

shutdown

duplex half

!

interface FastEthernet1/0

ip address 10.1.1.10 255.255.255.0

duplex auto

speed auto

ipv6 enable

ipv6 ospf 100 area 0

!

interface FastEthernet1/1

ip address 20.1.1.30 255.255.255.0

duplex auto

speed auto

ipv6 enable

ipv6 ospf 100 area 0

!

interface Serial2/0

ip address 100.1.1.1 255.255.255.0

encapsulation ppp

serial restart-delay 0

clock rate 64000

ip route 30.1.1.0 255.255.255.0 200.1.1.1

no ip http server

no ip http secure-server

!

!

!

logging alarm informational

!

!

ipv6 router ospf 100

log-adjacency-changes

!

!

!

!

!

r2# sh run

no ip domain lookup

!

ipv6 unicast-routing

!

!

!

!

!

!

interface Tunnel0

no ip address

ipv6 address 5001::2004/120

ipv6 ospf 100 area 0

tunnel source Serial1/0

tunnel destination 212.1.1.1

tunnel mode ipv6ip

!

interface Loopback0

no ip address

ipv6 address 8001::1001/12

ipv6 ospf 100 area 0

!

interface Serial1/0

ip address 212.1.1.2 255.255.255.0

serial restart-delay 0

!

interface Serial1/1

no ip address

shutdown

serial restart-delay 0

!

interface FastEthernet2/0

ip address 50.1.1.1 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet2/1

no ip address

shutdown

duplex auto

speed auto

!

ip route 40.1.1.0 255.255.255.0 Serial1/0

no ip http server

no ip http secure-server

!

!

!

logging alarm informational

!

!

ipv6 router ospf 100

router-id 3.3.3.3

log-adjacency-changes

!

!

!

!

!

r3# sh run

ipv6 unicast-routing

!

!

!

!

!

interface Tunnel0

no ip address

ipv6 address 5001::2003/120

ipv6 ospf 100 area 0

tunnel source Serial1/1

tunnel destination 212.1.1.2

tunnel mode ipv6ip

!

interface Loopback0

no ip address

ipv6 address 3001::7001/112

ipv6 ospf 100 area 0

!

interface Serial1/0

no ip address

ipv6 address 2012::7002/120

ipv6 ospf 100 area 0

serial restart-delay 0

!

interface Serial1/1

ip address 212.1.1.1 255.255.255.0

serial restart-delay 0

clock rate 64000

!interface FastEthernet2/0

ip address 40.1.1.1 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet2/1

no ip address

shutdown

duplex auto

speed auto

!

ip route 50.1.1.0 255.255.255.0 Serial1/1

no ip http server

no ip http secure-server

!

!

!

logging alarm informational

!

!

ipv6 router ospf 100

router-id 2.2.2.2

log-adjacency-changes

!

!

!

!

!

control-plane

ipv6 unicast-routing

!

!

!

!

!

interface Tunnel0

no ip address

ipv6 address 5001::2003/120

ipv6 ospf 100 area 0

tunnel source Serial1/1

tunnel destination 212.1.1.2

tunnel mode ipv6ip

!

interface Loopback0

no ip address

ipv6 address 3001::7001/112

ipv6 ospf 100 area 0

!

interface Serial1/0

no ip address

ipv6 address 2012::7002/120

ipv6 ospf 100 area 0

serial restart-delay 0

!

interface Serial1/1

ip address 212.1.1.1 255.255.255.0

serial restart-delay 0

clock rate 64000

!interface FastEthernet2/0

ip address 40.1.1.1 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet2/1

no ip address

shutdown

duplex auto

speed auto

!

ip route 50.1.1.0 255.255.255.0 Serial1/1

no ip http server

no ip http secure-server

!

!

!

logging alarm informational

!

!

ipv6 router ospf 100

router-id 2.2.2.2

log-adjacency-changes

!

!

!

!

!

control-plane

r4# sh run

no ip domain lookup

!

ipv6 unicast-routing

!

!

!

!

!

!

!

interface Loopback0

no ip address

ipv6 address 8001::1001/12

ipv6 ospf 100 area 0

!

interface FastEthernet0/0

no ip address

shutdown

duplex half

!

interface Serial1/0

ip address 212.1.1.2 255.255.255.0

serial restart-delay 0

!

!

interface FastEthernet2/0

ip address 50.1.1.1 255.255.255.0

duplex auto

speed auto

!

interface FastEthernet2/1

no ip address

shutdown

duplex auto

speed auto

!

ip route 40.1.1.0 255.255.255.0 Serial1/0

no ip http server

no ip http secure-server

!

!

!

logging alarm informational

!

!

ipv6 router ospf 100

router-id 3.3.3.3

log-adjacency-changes

!

!

!

!

!

control-plane

!

!

!

!

!

!

gatekeeper

shutdown

!

Now i'm able to ping loopback of r4,r3,r2 with r1 & vice versa.c1 can ping  c2,c3 but not c4 & c5,similarly c4 can ping c5 but not c1,c2,c3.

Also c3 is not pinging c4.So my question is what to do so that i can ping c1 with c4,c5.

plz help!!

1 REPLY
Community Member

IPv6 IPv4 network interconnection.

Dear Saurab,

you say ping and not ping6 so you are posting in the wrong forum even if you have an IPv6 config in the routers ....

But assuming you are talking about IPv6 (it does not change if we are talking IPv4) all you are saying points to the fact computers have no default routes out of their segments.

Check that by doing traceroutes (traceroutes6) instead of pings and also check their routing tables.

Cheers

Fabio

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