Section 30.18.2 – Riverstone Networks WICT1-12 User Manual

Page 648

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30-44 Riverstone Networks RS Switch Router User Guide Release 8.0

Scenarios for Deploying Channelized T1, E1 and T3

WAN Configuration

30.18.2

Scenario 2: Routed Inter-Office Connections with Only T1 on RS 8x00

In this scenario, a company’s sites share data that is held at the Internet Service Provider (ISP). The company’s head
office contains an RS 8600, and the remote sites each have an RS 3000. To access the shared data or the Internet, all
sites have four T1 lines grouped into a Multilink PPP bundle to connect to the ISP, and so are just one hop away.

The company also has significant inter-office communications. All remote sites frequently communicate with head
office, so a T1 line is provided to each remote site. Where there is significant traffic between two remote sites, perhaps
because they are in the same geographical region, they are also connected by a T1 line. All remote sites are a maximum
of two hops away from any other remote site, and RIP is used as the routing protocol.

The ISP provides a Channelized T3 connection on their RS 32000, a LAN that connects to the servers containing the
shared data required by the company, and a connection to the Internet.

Figure 30-6

shows the network layout for this scenario. The tables following the figure show the commands used to

configure the interfaces for the routers at the ISP, head office (hqsite), and the remote sites, rsite2 and rsite3. The
interfaces on the routers at the remaining sites are configured in a similar way to the corresponding interfaces for rsite2,
using the appropriate IP address for each interface. Only the configurations of the Channelized T1 and T3 interfaces
are described.

Hardware Requirements

Router

Hardware Requirements

RS 32000

1 CT3 module (with 4 T3 ports).

RS 8600 (hqsite)

2 Multi-Rate WAN modules with 4 T1 WICs.

RS 3000 (rsite2)