Important Management Considerations; Figure 13. Star-Wired Topology Of Interconnected Switches - Olicom CrossFire 8600 Manual To Operations

54

Important Management Considerations

A star-wired topology (see Figure 13) helps determine problems in a network
because no single cable carries all of the traffic on the network. However, serial
connections could reduce network reliability since each connecting cable and
switch could potentially divide the network should a failure occur.
If you create parallel paths directly between switches, be sure you have enabled
spanning tree protocol (the default setting for spanning tree protocol is no or
disabled). Parallel paths create endless loops that cause unsatisfactory network
operation unless you configure the switch for spanning tree capability. The
spanning tree algorithm disconnects loops in networks using the transparent
bridging algorithm or the SRT algorithm, and will block a port of one of the
switches in the parallel paths. If the port in the primary path fails, the port that has
been blocked will change automatically to the forwarding state, keeping the
network operational.
STACK-LINK
OK
ERR
TX RX ATTACH 1 2
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8
STACK-LINK
OK
ERR
TX RX ATTACH 1 2
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8
STACK-LINK
OK
ERR
TX RX ATTACH 1 2
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8
STACK-LINK
OK
ERR
TX RX ATTACH 1 2
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8

Figure 13. Star-Wired Topology of Interconnected Switches

CrossFire 8600/8605 Token-Ring Switches v. 1.2, P/N: 710001641
MANAGEMENT
1
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
3 4 1 2 3 4
9 10 11 12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
3 4 1 2 3 4
9 10 11 12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR 1 ACT ACT 3 ACT 4 ACT
3 4 2
9 10 11 12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
3 4 1 2 3 4
9 10 11 12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX
STACK-LINK
OK
ERR
ERR 1 ACT ACT 3 ACT
TX RX ATTACH 1 2 3 4 2
PWR DIAG ERR RST
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
RX INS
4 ACT
19 20
STACK-LINK
OK
ERR
TX RX ATTACH 1 2 3 4
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8 9 10 11
STACK-LINK
OK
ERR
TX RX ATTACH 1 2 3 4
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8 9 10 11
STACK-LINK
OK
ERR
TX RX ATTACH 1 2 3 4
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8 9 10 11
STACK-LINK
OK
ERR
TX RX ATTACH 1 2 3 4
MANAGEMENT PWR DIAG ERR RST
1 2 3 4 5 6 7 8 9 10 11
Preparing for Installation
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
1 2 3 4
12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
1 2 3 4
12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR 1 ACT ACT 3 ACT 4 ACT
2
12 13 14 15 16 17 18 19 20
CrossFire
TOKEN-RING SWITCH OC-8600
OK TX RX INS TX RX INS TX RX INS TX RX INS
ERR ACT ACT ACT ACT
1 2 3 4
12 13 14 15 16 17 18 19 20