Troubleshooting guide

4-8
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 4 Example Network
Example Networks
The typical core switch router configuration in Figure 4-5 shows the following connections:
• 622-Mbps single-mode fiber core connection through PVC for Private Network-Network Interface
(PNNI) redundancy to other buildings
• 155-Mbps single-mode and multimode fiber distribution connection through PVC to ATM
distribution switch routers within the building
Figure 4-5 Typical Core Switch Router ATM Configuration
The typical distribution switch router configuration in Figure 4-6 shows the following connections:
• 155-Mbps UTP distribution connection through PVC PNNI between core switch routers
• 155-Mbps UTP distribution connection through LANE SVCs to the Cisco Systems
Catalyst 5000 switches running LECS/BUS
• 155-Mbps UTP access connection through ELAN SVCs to individual servers
• 155-Mbps UTP or multimode fiber access connection through SVC with a CBR connection to
CODEC for videoconferencing
Figure 4-6 Typical Distribution Switch Router ATM Configuration to Floor 1
155 UTP to
distribution
layer switch
routers
622 SMF
to core switch routers
Marketing
building
Manufacturing
building
Administration
building
10298
Server farm
Videoconference
center
ELAN
to servers
CBR to
video
LEC-2
LEC-3
LEC-2
LEC-3
155 UTP to
core layer
switch routers
10299