v
C
O
N
T
E
N
T
S
A
B
O
U
T
T
H
I
S
G
U
I
D
E
Introduction
9
Audience
9
How to Use This Guide
9
Conventions
10
Related Documents
12
3Com Documents
12
Cisco Documents
13
Reference Documents
13
1
I
N
T
R
O
D
U
C
T
I
O
N
Product Overview
1-1
Edge Router Module Operation
1-1
Edge Router Module Architecture
1-3
Edge Router Module Features
1-5
Software Options
1-5
Topology Switching
1-7
Network Reliability
1-7
IOS Router Software Updates
1-8
Memory Upgrades
1-9
2
I
N
S
T
A
L
L
I
N
G
T
H
E
E
D
G
E
R
O
U
T
E
R
M
O
D
U
L
E
Installation Flowchart
2-2
Precautionary Procedures
2-3
Quick Installation
2-3
Quick Installation for Unmanaged Hubs
2-4
Quick Installation for Managed Hubs
2-5
Unpacking Procedures
2-6
Verifying Jumper Plug Positions
2-7
