Cabletron Systems TRMM-2, Руководство пользователя

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INTRODUCTION
1-4
1.1.4 Dividing Stations Among Rings
The TRMM-2 is a port assigning management module. As described in
Appendix A, it provides the support needed by port switching MIMs to
execute port switching. This feature enables you to segment and manage
multiple Token Rings in the MMAC.
Figure 1-2 shows an example of
how the TRMM-2 can assign the 12 ports of a TDRMIM to the FNB
rings.
In configuration A, Ports 1–3 are assigned to FNB Ring 1, Ports 4–6 are
assigned to FNB Ring 2, Ports 7–9 are assigned to FNB Ring 3, and Ports
10–12 are assigned to FNB Ring 4.
Figure 1-2 Sample Port/Station Assignments To The FNB Rings
(Configuration A)
In Figure 1-3 (configuration B), Port 2 is assigned from FNB Ring 1 to
FNB Ring 3, and Port 9 is assigned from FNB Ring 3 to FNB Ring 1.
S WITCHING UTP/STP
TOKEN RING
ERR
16 Mb
BYP MGMT
RING 4
16 Mb
16 Mb
16 Mb
16 Mb
16 Mb
RING 2
RING 1
RING 3
AUX 2
AUX 1
IN USE
22 DR
SN
IN USE
IN USE
IN USE
IN USE
IN USE
1
X
7
X
9
X
11
X
8
X
12
X
10
X
3
X
5
X
2
X
4
X
6
X
R
I
N
G
P
O
R
T
S
1
LINK PEN
LINK PEN
RI
RX
TX
RX
TX
RO
R
I
N
G
P
O
R
T
S
1
LINK PEN
LINK PEN
RI
RX
TX
RX
TX
RO
1
2
3
FNB Ring 2
FNB Ring 4
FNB Ring 1
FNB Ring 3
Configuration A
(Ports assigned
to all FNB rings)
4
5
6
7
8
9
10
11
12