Cabletron Systems SmartSwitch 6000 Management Manual page 42

MMAC-Plus Management Views
The Flexible Network Bus itself is represented by two sets of concentric rings; the
top set representing FNB-1(blue ring is primary; green is secondary) and the
bottom set FNB-2 (magenta ring is primary; yellow is secondary).
Each moduleÕs MAC encoding is also indicated on the display. In the example
window on the previous page, module 1 is a 9E133-36 with MAC encoding
associated with FNB-2 primary, module 4 is a 9F120-08 with MAC encoding
associated with FNB-1 secondary (hidden by the menu), and module 7 is a dual-
attached 9F116-01 (two interfaces connected to the FNB) with its two MACs
associated with FNB-1 primary and FNB-2 primary.
To segment the backplane FNB:
1. Click the left mouse button on the interface index where you want to segment
3-26
Figure 3-11. Sample FNB ConÞguration Window
the ring, and drag to select the segmentation option of choice: Wrap FNB 1
Right, Wrap FNB 1 Left, FNB 1 Thru, Wrap FNB 2 Right, Wrap FNB 2 Left,
or FNB 2 Thru.
The example window below displays the consequence of wrapping the
left FNB multiplexer on board 1 (as shown in the menu of Figure 3-11). At
module 1's FNB multiplexer, Primary In has wrapped to Secondary Out,
causing the primary and secondary rings to consolidate into a single ring
(essentially doubling the length of the initial primary ring). Any network
communications that were isolated on separate rings are now integrated into
a single ring (notice that both MACs are now associated with the same ring).
The BackPlane Configuration View