11-20-2008 09:07 AM - edited 03-06-2019 02:36 AM
I am trying to setup a test IPv6 network. Currently I have built a VMware infrastructure that can handle both IPv4 and IPv6 traffic. I have connected a physical port from the ESX server to begin connecting real world devices. I am trying to implement IPv6 routing on a Cisco 1812 series router. The IOS version is C181X-ADVIPSERVICESK9-M), version 12.4(6)T8. So far I am able to route IPv4 packets across this mixed network of IPv4 and IPv6. I have followed a multitude of directions to get IPv6 working to no avail. Attached is the network topology and the current running configuration from the router.
The router would be placed in between the virtual and physical networks.
Is there someone who could peruse the documents and let me know where I am going wrong?
Thanks for any assistance
Greg
Please move if I placed in the wrong forum section.
11-20-2008 09:34 AM
Hello Greg,
usually on lan interface eui-64 formats are used:
Example:
ipv6 unicast-routing
interface ethernet 0
ipv6 address 2001:0DB8:c18:1::/64 eui-64
I have some doubts on you FE0 config:
interface FastEthernet0
ip address 10.0.3.2 255.255.255.0
duplex auto
speed auto
>>>ipv6 address autoconfig
ipv6 rip process1 enable
!
I would change it with the appropriare eui-64 address.
There is someone that can give an IPv6 address to the router ?
ipv6 address autoconfig
To enable automatic configuration of IPv6 addresses using stateless autoconfiguration on an interface and enable IPv6 processing on the interface, use the ipv6 address autoconfig command in interface configuration mode. Addresses are configured depending on the prefixes received in Router Advertisement messages. To remove the address from the interface, use the no form of this command.
see
http://www.cisco.com/en/US/docs/ios/ipv6/command/reference/ipv6_05.html#wp2114586
http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-addrg_bsc_con.html#wp1282543
Hope to help
Giuseppe
11-20-2008 09:51 AM
I noticed your running RIPv2. I don believe it works with RIP 1 or 2....I think you need what is called RIPng (New Generation). I will see if I can find where that is stated.
Mike
11-20-2008 09:55 AM
11-20-2008 10:59 AM
Thanks so far.....I am going to make the modifications specified and will let you know.
Greg
11-25-2008 09:06 AM
11-25-2008 09:17 AM
Hello Greg,
I see you are using EUI-64 ip addresses now.
I think the following static routes are not needed:
ipv6 route 2001:DB:0:3::/64 FastEthernet0
ipv6 route 2001:DB:0:4::/64 FastEthernet1
these are exactly the ipv6 subnets out those interfaces.
the same applies for ipv4 :
ip route 10.0.3.0 255.255.255.0 FastEthernet0
ip route 10.0.4.0 255.255.255.0 FastEthernet1
!
Do you see RIP (for ipv4 frames ) on both interfaces ?
Hope to help
Giuseppe
11-25-2008 09:50 AM
I currently see rip for ipv4 frames on both sides. I can route with no problem using IPv4 after I pulled the static routes as you suggested. IPv6 still does not work.
Thanks
Greg
11-25-2008 10:33 AM
Here is some additional information. I run the sh ipv6 rip 6route database and I get the following:
IPv6_Router1#sh ipv6 rip 6route database
RIP process "6route", local RIB
For sh ipv6 route, I get the following:
IPv6_Router1#sh ipv6 route
IPv6 Routing Table - 6 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
D - EIGRP, EX - EIGRP external
C 2001:DB8:0:3::/64 [0/0]
via ::, FastEthernet0
L 2001:DB8:0:3:21D:45FF:FE89:D376/128 [0/0]
via ::, FastEthernet0
C 2001:DB8:0:4::/64 [0/0]
via ::, FastEthernet1
L 2001:DB8:0:4:21D:45FF:FE89:D377/128 [0/0]
via ::, FastEthernet1
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0
Let me know if there is any other information that you may need.
Thanks
Greg
11-25-2008 11:11 AM
Greg,
Even if you don't receive any routes from your neighbor, you should at least see the local routes in the rip database. Can you provide a "show ipv6 proto", "show ipv6 int fa0" and "show ipv6 int fa1".
Regards
11-25-2008 11:16 AM
Here are the results:
IPv6_Router1#sh ipv6 proto
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "static"
IPv6 Routing Protocol is "rip 6route"
Interfaces:
FastEthernet1
FastEthernet0
Redistribution:
None
IPv6_Router1#sh ipv6 int fa0
FastEthernet0 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::21D:45FF:FE89:D376
No Virtual link-local address(es):
Global unicast address(es):
2001:DB8:0:3:21D:45FF:FE89:D376, subnet is 2001:DB8:0:3::/64 [EUI]
Joined group address(es):
FF02::1
FF02::2
FF02::9
FF02::1:FF89:D376
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
IPv6_Router1#sh ipv6 int fa1
FastEthernet1 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::21D:45FF:FE89:D377
No Virtual link-local address(es):
Global unicast address(es):
2001:DB8:0:4:21D:45FF:FE89:D377, subnet is 2001:DB8:0:4::/64 [EUI]
Joined group address(es):
FF02::1
FF02::2
FF02::9
FF02::1:FF89:D377
MTU is 1500 bytes
ICMP error messages limited to one every 100 milliseconds
ICMP redirects are enabled
ICMP unreachables are sent
ND DAD is enabled, number of DAD attempts: 1
ND reachable time is 30000 milliseconds
ND advertised reachable time is 0 milliseconds
ND advertised retransmit interval is 0 milliseconds
ND router advertisements are sent every 200 seconds
ND router advertisements live for 1800 seconds
ND advertised default router preference is Medium
Hosts use stateless autoconfig for addresses.
11-25-2008 12:11 PM
Greg,
Everything looks good except that the RIP database is empty. I would try to upgrade to a more recent image in the 12.4T train.
regards
12-01-2008 07:15 AM
Here is the latest. I have upgraded to the latest IOS and still have an empty RIP database.
This is the latest config:
Current configuration : 1371 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot system flash:c181x-advipservicesk9-mz.124-22.T.bin
boot-end-marker
!
logging message-counter syslog
!
no aaa new-model
!
!
dot11 syslog
ip source-route
!
!
!
!
ip cef
ipv6 unicast-routing
ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
interface FastEthernet0
ip address 10.0.3.2 255.255.255.0
duplex auto
speed auto
ipv6 address 2001:DB8:0:3::/64 eui-64
ipv6 enable
ipv6 rip 6route enable
!
interface FastEthernet1
ip address 10.0.4.1 255.255.255.0
duplex auto
speed auto
ipv6 address 2001:DB8:0:4::/64 eui-64
ipv6 enable
ipv6 rip 6route enable
!
interface BRI0
no ip address
encapsulation hdlc
shutdown
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
!
interface FastEthernet5
!
interface FastEthernet6
!
interface FastEthernet7
!
interface FastEthernet8
!
interface FastEthernet9
!
interface Vlan1
no ip address
!
router rip
network 10.0.0.0
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
ipv6 router rip 6route
!
!
!
!
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
!
!
webvpn context Default_context
ssl authenticate verify all
!
no inservice
!
end
I am going to fire up the second router that I have and see if there may be a hardware issue with this router. I am at a complete loss.
Hopefully I missed something in the config.
Thanks again
Greg
12-01-2008 09:13 AM
I am now starting to receive this error message. I am try to locate what this error means.
*Dec 1 16:37:19.163: %IPV6_ND-3-CONFLICT: Router FE80::250:56FF:FEAD:1B3E on Fa
stEthernet0 conflicting ND setting prefix 2001:DB8:0:3::/64 valid lifetime, diff
erence 4292375295 seconds
12-01-2008 11:08 AM
Greg,
This message should not prevent the router from receiving the RIP routes. Can you do a "show ipv6 rip" and run a "debug ipv6 rip".
Regards
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