Riverstone Networks WICT1-12 - Manual (Page 661)

Riverstone Networks RS Switch Router User Guide Release 8.0 30-57
WAN Configuration Scenarios for Deploying Channelized T1, E1 and T3
30.18.4 Scenario 4: Routed Metropolitan Backbone with Only T1 on RS 8x00
In this scenario, a number of service providers are connected by a Metropolitan Backbone. The backbone consists of
RS 32000 connected by Packet Over SONET (POS) links.
An MSP provides a Channelized T3 service using an RS 32000. A company has two sites that connect to this service:
• The head office (hqsite) connects using Multilink PPP bundled T1 lines from an RS 8600.
• The remote site, rsite, connects to the MSP using a fractional T1 line, which provides one 768 Kbps
service, one 384 Kbps service, and six 64 Kbps services. Also, a full (unstructured) T1 link is
connected directly to the head office.
Internet Service Provider A uses a POS link to the Internet. Internet Service Provider B provides a Channelized T3
service to an Application Service Provider and a Content Provider, both of which connect using Multilink PPP bundled
T1 lines from an RS 8000.
Figure 30-8 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 various locations. Only the configurations of the Channelized T1 and T3
interfaces are described.
Hardware Requirements
Router Hardware Requirements
RS 32000 (MSP) 1 CT3 module (with 4 T3 ports).
RS 8600 (hqsite) 2 Multi-Rate WAN modules with 3 T1 WICs.
RS 3000 (rsite) 2 Multi-Rate WAN modules with 3 T1 WICs.
RS 32000 (ISP B) 1 CT3 module (with 4 T3 ports).
RS 8000 (CP) 2 Multi-Rate WAN modules with 4 T1 WICs.
RS 8000 (ASP) 2 Multi-Rate WAN modules with 4 T1 WICs.