Enterasys Matrix 7H4284-49 Hardware Installation Manual page 33

Example 4 (Figure
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 (Figure
Shows chassis slots 1 and 5 populated with 6x1xx, 6x2xx modules, respectively; slots 2 through 4
with DFE modules, but not a 7H4382-25, 7H4382-49, 7H4383-49, or 7H4385-49 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 modules in slots
2, 3, and 4 will operate under one IP address. Since there is no bridging module, the DFE 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 (Figure
The module arrangement in this example is similar to the one shown in
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 7H4382-49 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 7H4382-49 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.
3-1, D)
3-1, E)
3-1, F)
Backplane Connections and Installation Rules
Figure 3-1, E and
Installation 3-5