By default EIGRP uses only Bandwidth and Delay in its metric calculations.
It is not recommended to change this, though it is possible.
You should build up the neighbor relationship over the frame relay link between the two 2811 routers. You will then have 2 neighbor relationships: one through the leased line, another through the frame relay link.
Then you can play around with the Bandwidth and Delay settings of the interfaces to make the leased line more preferable for EIGRP.
bandwidth xxx (in kbits/sec)
delay yyy (in microseconds)
This will change the metric of routes over the serial interface and you should use a setting that will make the metric less than the metric over the frame relay link.
You should set the metric on both sides of the link so the traffic is sent over the leased line interfaces in both directions.
Be aware that changing the bandwidth setting of the interface will have effect on the QoS operations if you have QoS configured on the interfaces.
Therefore, if QoS is configured, it is better to change the Delay parameter.
Very nice answer indeed! Let me add one more comment. As a general recommendation, the bandwidth command should never be used to manually influence the EIGRP metric and make one route more preferred than some other. The EIGRP is allowed to reserve by default up to 50% of the interface bandwidth for its own traffic. If the bandwidth on an interface is set to a higher value than the real speed of the interface, the EIGRP may begin monopolizing the interface or even saturating it with its own traffic. Therefore, it is always recommended to set up the bandwidth command to the real information-carrying capacity of the interface, and if further EIGRP metric manipulations are necessary, the delay command should be used for that purpose.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...