Learning by Doing: CISCO Certified Network ... - SCN Research

Frame Relay: Hub and Spoke with 3 routers
Objective:
To be able to configure a “hub and spoke” frame relay network using 3 routers.
Background:
You can configure frame relay as a “hub and spoke” topology. Essentially one router
acts as a “master” or “primary” route controller (the “hub”). All others act as “slaves” or
“secondary” routes (the “spokes”) with configurations leading to the “master” or
“primary” controller. If this were to be a “fully-meshed” frame relay network then each
would have routes to all others. In our example below see how router “Lloyd” and
“Allen” map back to “Timothy” while Timothy routes to both Lloyd and Allen. We use
hub and spokes for control over the network and, sometimes, to reduce costs.
Materials Needed:
(3) routers
(3) DTE cables
(1) Adtran atlas 550
(1) PC/workstation
(1) console cable
Lab Diagram:
Lloyd
Timothy
Allen
Router Timothy Allen Lloyd
S0/0 192.168.20.1/24 192.168.20.2/24 192.168.20.3/24
Loop 0 192.168.1.1/24 192.168.2.1/24 192.168.3.1/24
Adtran 1/1 1/2 2/1
Dlci 16 18 17
Master? Yes No No
Maps 192.168.20.3-dlci 17 192.168.20.1-dlci 16 192.168.20.1-dlci16
192.168.20.2-dlci 18
396