02-26-2019 06:57 PM
Hello,
For a lab I need to configure IPv6 between two router (1841 & 1941) I setup link-local on serial interface on both router. I setup static routing route. It is working fine, i can ping across router but when a save my network, quit and reload the file. My static route do not load on both router. Everything else is fine.
Thank you.
Running-Config
R1
Building configuration...
Current configuration : 876 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1-1841
!
!
!
!
!
!
!
!
ip cef
ipv6 unicast-routing
!
no ipv6 cef
R1-1841#show run
Building configuration...
Current configuration : 876 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1-1841
!
!
!
!
!
!
!
!
ip cef
ipv6 unicast-routing
!
no ipv6 cef
R1-1841#
R1-1841 con0 is now available
Press RETURN to get started.
R1-1841>
R1-1841>en
R1-1841#show runng
R1-1841#show runn
R1-1841#show running-config
Building configuration...
Current configuration : 876 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1-1841
!
!
!
!
!
!
!
!
ip cef
ipv6 unicast-routing
!
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address FE80::1 link-local
ipv6 address 2001:DB8:CC1E:1::/64
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
ipv6 address FE80::1 link-local
ipv6 address 2001:DB8:CC1E:2::/64
!
interface Serial0/1/0
no ip address
ipv6 address FE80::1 link-local
!
interface Serial0/1/1
no ip address
clock rate 2000000
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
ipv6 route 2001:DB8:CC1E:A::/64 Serial0/1/0 FE80::2
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
R2
Building configuration...
Current configuration : 972 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2-1941
!
!
!
!
!
!
!
!
ip cef
ipv6 unicast-routing
!
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524MEJM-
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
ipv6 address FE80::1 link-local
ipv6 address 2001:DB8:CC1E:A::/64
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/1/0
no ip address
ipv6 address FE80::2 link-local
ipv6 address autoconfig
clock rate 2000000
!
interface Serial0/1/1
no ip address
clock rate 2000000
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
ipv6 route 2001:DB8:CC1E:1::/64 Serial0/1/0 FE80::1
ipv6 route 2001:DB8:CC1E:2::/64 Serial0/1/0 FE80::1
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
02-26-2019 09:55 PM
Hi,
As you have configured a Fully Specified Static Route but there is some issue:
ipv6 route 2001:DB8:CC1E:A::/64 Serial0/1/0 FE80::2
FE80:: is a link-local address in IPv6 standard so change this address with a global address and test it again.
Regards,
Deepak Kumar
02-27-2019 07:49 AM
Hi,
Although IOS allows you to configure a next hop address on a serial interface, it doesn't make much sense to configure it, as it is not used at all. It used for the purpose of neighbor discovery on an ethernet interface, but completly useless on a serial interface. I would suggest you use the following configuration:
ipv6 route 2001:DB8:CC1E:A::/64 Serial0/1/0
Regards,
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