Figure 6-31. Ip Routing Network With Dial Backup; Figure 6-32. Menu For Creating The Packet Endpoints - ADTRAN ATLAS User Manual

EXAMPLE 6:
Step 1
61200263L1-1.1
IP ROUTING NETWORK WITH DIAL BACKUP
Example 6 depicts an IP network with external routers (see Figure 6-31). An
PLUS
ATLAS 800 with a frame relay upgrade is located at both the central site
and at one of the remote sites (Boston). A TSU IQ with an external router
connected to an Nx56/64 module is located at each of the two remaining re-
mote sites (Chicago and New York). At the central site, ATLAS terminates a
full T1 frame relay connection from the XYZ service provider and switches
the PVCs (sublinks) to the external router.
In the event of problems in the connections to the XYZ public frame relay
provider, each device can redirect traffic to a backup network. In this
example, each TSU IQ uses an ISDN DBU module to connect to the PSTN via
BRI. Each ATLAS is connected to the PSTN via PRI. To re-create this
example, follow the process discussed below to configure the central site
ATLAS.
Atlanta
ATLAS 800 PLUS
with frame relay upgrade
PRI
Server
Dashed lines indicate
backup lines.

Figure 6-31. IP Routing Network with Dial Backup

From P M
ACKET ANAGER
points (see Figure 6-32).

Figure 6-32. Menu for Creating the Packet Endpoints

ATLAS Frame Relay User Manual
Chapter 6. Frame Relay Configuration Examples
Chicago
F-T1
XYZ Public
T1 F-T1
Frame Relay
Boston
BRI
BRI
F-T1
ISDN
PRI
/P E /C
ACKET NDPNTS ONFIG
Router
TSU IQ
New York
Router
TSU IQ
ATLAS 800 PLUS
with frame relay upgrade
Router
, create the packet end-
6-13