Riverstone Networks WICT1-12 - Manual (Page 676)

30-72 Riverstone Networks RS Switch Router User Guide Release 8.0
Scenarios for Deploying Channelized T1, E1 and T3 WAN Configuration
30.18.6 Scenario 6: Routed Inter-Office Connections with E1 on RS8x00
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 E1 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 an E1 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 an E1 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 E3 connection on their proprietary router, a LAN that connects to the servers
containing the shared data required by the company, and a connection to the Internet.
Figure 30-10 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 E1 interfaces are
described.
Note The configurations in this example specify timeslots 1-31 for the E1 ports. This
excludes the use of timeslot 16. If timeslot 16 is to be used, then
ts16
must be
included in the relevant commands. For example:
port set e1.2.1:1 timeslots 1-31 ts16 wan-encapsulation ppp
Hardware Requirements
Router Hardware Requirements
RS 8600 (hqsite) 2 Multi-Rate WAN modules with 4 E1 WICs.
RS 3000 (rsite2) 2 Multi-Rate WAN modules with 3 E1 WICs.
RS 3000 (rsite3) 2 Multi-Rate WAN modules with 4 E1 WICs.
RS 3000 (rsite4) 2 Multi-Rate WAN modules with 3 E1 WICs.
RS 3000 (rsite5) 2 Multi-Rate WAN modules with 3 E1 WICs.
RS 3000 (rsite6) 2 Multi-Rate WAN modules with 3 E1 WICs.
RS 3000 (rsite7) 2 Multi-Rate WAN modules with 3 E1 WICs.