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IPv6 static route not loading at startup. Packet Tracer

rogerwilco2018
Level 1
Level 1

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

 

 

2 Replies 2

Deepak Kumar
VIP Alumni
VIP Alumni

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

Regards,
Deepak Kumar,
Don't forget to vote and accept the solution if this comment will help you!

Harold Ritter
Cisco Employee
Cisco Employee

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,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México