Topology
Notice!
IPv6 addresses have changed. Follow the below topology diagram and tasks to accomplish the goals.
Pic1. IPv6 Topology Diagram.
Task 1
Configure IPv6 addresses between R2 and R3 on their Serial1/0 links. Enable EIGRPv6 AS 1 on these interfaces. Follow the IPv6 addressing scheme used in previous labs.
Task 2
Configure Frame-Relay Connection between R2 and R3 so that EIGRPv6 thinks it is a half the speed of Serial1/0.
Task 3
Enable unequal cost load balancing between R2 and R3.
Solution
Task 1
Configure IPv6 addresses between R2 and R3 on their Serial1/0 links. Enable EIGRPv6 AS 1 on these interfaces. Follow the IPv6 addressing scheme used in previous labs.
R2 Config:
!interface Serial1/0
ipv6 address FC00:1:1:20::2/64
ipv6 eigrp 1
serial restart-delay 0
!
R3 Config:
!interface Serial1/0
ipv6 address FC00:1:1:20::3/64
ipv6 eigrp 1
serial restart-delay 0
!
Task 2
Configure Frame-Relay Connection between R2 and R3 so that EIGRPv6 thinks it is a half the speed of Serial1/0.
Pic. 2 - Interface Speed Before the Adjustment (both).
R2 Config:
!interface Serial0/0
bandwidth 772
!
R3 Config:
!interface Serial0/0.123
bandwidth 772
!
Task 3
Enable unequal cost load balancing between R2 and R3.
Check if the second link (Serial0/0.123) is a Feasible Successor.
Pic. 3 - Picking FC00:A:A:A::2/128 for Feasible Successor.
Frame-Relay connection is the Feasible Successor (AD < FD) which is pre-requisite for un-equal load balancing.
Currently, R3 has only one next-hop address towards FC00:A:A:A::2/128.
Pic. 4 - R3's Path for FC00:A:A:A::2/128.
R2 Config:
!ipv6 router eigrp 1
variance 2
no shutdown
!
R3 Config:
!
variance 2
no shutdown
!
After modifying 'variance':
Pic. 5 - R3's Path for FC00:A:A:A::2/128.
