Enterasys Matrix 7G4202-72 Hardware Installation Manual page 28

Backplane Connections and Installation Rules
Example 3
Shows chassis slots 1 through 5 populated with first and second generation modules (6x1xx and
6x2xx). If a 6x1xx or 6x2xx series module is installed in slot 6 or 7, it will operate in standalone
mode (no backplane connectivity). Like the 6x3xx modules, the 6x1xx and 6x2xx modules operate
as individual modules with separate IP addresses, and each one is configured using Local
Management.
Rule: The 6x1xx and 6x2xx modules can communicate with each other when they are installed in
chassis slots 1 through 5 in the Matrix E7 chassis. If installed in slot 6 or 7, they operate in
standalone mode.
Example 4
Shows chassis slots 1 through 5 populated with a mix of 6x1xx, 6x2xx, and 6x3xx modules and
only third generation modules in slots 6 and 7.
In this module arrangement, the 6x3xx module provides a proxy bridge, which enables the 6x1xx
and 6x2xx modules to communicate with 6x3xx modules in slot 6 or 7. If more than one 6x3xx
module is installed in slots 1 to 5, the module in the lowest numbered slot performs the proxy
function for slots 6 and 7. Therefore, if a 6x3xx module is already performing the proxy function,
and another 6x3xx module is inserted into a lower numbered slot, connectivity will be temporarily
interrupted, as the new board takes over the proxy function. When a 6x3xx module in a lower
numbered slot is removed, and there is a 6x3xx module in a higher numbered slot, communication
is not interrupted.
For Local Management, plugging the Local Management connection into the 6x3xx modules will
allow management connections to all 6x1xx, 6x2xx, and 6x3xx modules. If the Local Management
connection is to a 6x1xx or 6x2xx board, only the modules in the first five slots will be recognized
by the management client.
Rule: There must be at least one 6x3xx module in slots 1 through 5 to enable communications
between the 6x1xx, 6x2xx, and 6x3xx modules.
Example 5
Shows chassis slots 1 and 5 populated with 6x1xx, 6x2xx modules, respectively; slots 2 through 4
with DFE‐Platinum modules without a bridging module; and slots 6 and 7 with 6x3xx modules.
In this module arrangement, the 6x1xx and 6x2xx modules in slots 1 and 5 can only communicate
with each other, because there is no 6x3xx module in one of the first five slots to serve as the proxy
bridge to communicate with the 6x3xx modules in slots 6 and 7. The 7x4xxx DFE‐Platinum
modules in slots 2, 3, and 4 will operate under one IP address. Since there is no bridging module
(7H4382‐25, 7H4382‐49, 7H4383‐49, or 7H4385‐49), the DFE‐Platinum modules will not
communicate with any other modules in the chassis.
Rule: In this example, there must be at least one 6x3xx series module, and a bridging module
(7H4382‐25, 7H4382‐49, 7H4383‐49, or 7H4385‐49) in slots 1 through 5 to enable communications
between all generations of modules in the chassis.
Example 6
The module arrangement in this example is similar to the one shown in Figure
described in Example 5. The only difference is that a bridging module is installed in slot 2,
enabling all modules to communicate with each other.
Rule: In this example, the Model Number serves as both the FTM1‐to‐FTM2 bridge and the five‐
to‐seven slot proxy bridge. The 6x3xx does not serve as a proxy bridge in this configuration
because the Model Number is in a slot with a lower number. You can use the 7H4382‐25,
7H4382‐49, 7H4383‐49, or 7H4385‐49 as a bridging module depending on the need.
3-4 Installation
(Figure 3-1, C)
(Figure 3-1, D)
(Figure 3-1, E)
(Figure 3-1, F)
3‐1, E and