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Scenarios 423
Scenarios
Scenario 1
RouteitRight has the following requirements:
·
The company has one central headquarters site, two regional offices, and three remote
sites for each regional office.
·
All branch offices must have a Frame Relay link with ISDN backup circuits to the
regional sites.
·
The branch sites must be able to survive a total regional site outage.
Scenario 2
RouteitRight has the following requirements (and uses the topology shown in Figure 11-20):
·
The company has no backup circuit requirement. If the branch offices lose connectivity,
that is OK until the problem is fixed.
·
The company has obtained free ISDN service, so more than 64 K must be available to the
branch offices.
·
No extra money may be spent to obtain this goal. It must be accomplished using existing
equipment (no CSUs, interfaces for routers, and so on).
Scenario 3
RouteitRight has decided to build a new network. The company has the following requirements:
·
The network architect should recommend equipment for all the sites.
·
The central site needs a router that can efficiently handle traffic from 13 regional sites.
·
The central site router must be able to support at least half of the regional offices if there
is a carrier outage.
·
The regional site routers must be able to handle the ten branch office routers connected to
the regional sites. They must also have T1 backup capability to the central office.
·
The regional offices' routers must be scalable and flexible to support any other needs that
might come up in the near future.
·
The branch office routers must be able to support ten users, with a 100 Mbps Ethernet port
on the router for future use with VPN services and ISDN backup to the regional offices.
87200333.book Page 423 Wednesday, August 22, 2001 2:53 PM