User guide

Functional Differences for Switching in Product Categories Switching
2-7
iMG/RG Software Reference Manual (Switching)
2.2.2.9 Port Diagnostics
On some devices, it is possible to perform diagnostics on the physical wiring that is connected to the Gateway’s
ethernet port. This is in effect a TDR mechanism - that can detect opens, shorts or good connections - and can
also determine the distance to the terminating point.
2.2.3 Functional Differences for Switching in Product Categories
The table below is intended to identify what is common amongst the product families - as well as where there
are differences - to highlite those differences. To determine which family your device belongs to - please refer to
the preface.
1. Supports 1K MAC Addresses
2. Supports 2K MAC Addresses
3. Supports 4K MAC Addresses
4. Supports 2 Queues
TABLE 2-1 Functional Mapping for Switching
Option
Fiber
A
Fiber
B
Fiber
C
Fiber
D Fiber E Modular
ADSL
A
ADSL
B
ADSL
C
Port Management 15 15, 12 15, 21 12, 15 12, 15,
18
12, 15, 16 15, 17 12, 15,
17
12, 15
Ingress Filtering 13XXX X X 13 X X
Address management 133322122
Rate limiting support 10 7, 14,
19
11, 14,
19
7, 14,
19
8, 9 7, 8, 9, 14,
20, 22
10 8, 9 8, 9
Loop Detection XX X
Layer 3 Routing Rate Limiting 6
Quality of Service Classification 455 555455
802.1p traffic priority X XXX X 23 XXX
Differentiated services code point
(DSCP)
X XXX X X X X X
Power Conservation Mode XX
Port Diagnostics X