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FL SWITCH MM HS
5-26
PHOENIX CONTACT
6874_en_16
Figure 5-20
Example 2 for the "relevant path"
5.2.5.10
Reconfiguration times
The reconfiguration time for a Spanning Tree depends on the timer values for MaxAge and
Forward Delay.
The minimum reconfiguration time is:
2 × Forward Delay
The maximum reconfiguration time is:
2 × Forward Delay + MaxAge
For the values recommended by the IEEE standard, the value for ten active STP switches
along a path beginning with the root switch is between 30 s and 50 s.
Switch-over time response to be expected for RSTP and RSTP with activated ring
detection
When using
RSTP
, expect switch-over times in the range from
100 ms to 2 s
. When using
fast ring detection
, expect switch-over times in the range from
100 ms to 500 ms
.
Port roles
The
root port
of a switch connects this switch to the root switch - either directly or via
another switch (designated switch).
The
designated port
is the port at a designated switch that is connected to the root port of
the next switch.
No additional switches/bridges are connected to
edge ports
. Termination devices are
connected to edge ports.
An
alternate port
is a path to the root, which, however, did not become a root port. I.e., this
port is not part of the active topology.
705600107
Inactive connection
Relevant path
for setting
the timer values
Active connection
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
LNK MODE
1
2
X1
LNK MODE
1
2
X2
LNK MODE
1
2
X3
LNK MODE
1
2
X4
US1
US2
Fail
Reset
MODE
ACT 100
FD
FL SWITCH MM HS
Ord. No. 28 32 32 6
US2
US1 GND
GND
R1
R2
00A0451BDD
MAC
Address
V.24
FL SWITCH MCS 16TX
Ord. No. 28 32 70 0
00.A0.45.1B.D2.1D
MAC
Address
1
3
5
7
2
4
6
8
9
11
13
15
10
12
14
16
9
16
10 11 12 13 14 15
1
8
2
3
4
5
6
7
MODE
ACT 100
FD
US1 US2 FAIL
X19
V.24
X17
US1 GND US2 GND
X18
R1 R2
FL SWITCH MCS 16TX
Ord. No. 28 32 70 0
00.A0.45.1B.D2.1D
MAC
Address
1
3
5
7
2
4
6
8
9
11
13
15
10
12
14
16
9
16
10 11 12 13 14 15
1
8
2
3
4
5
6
7
MODE
ACT 100
FD
US1 US2 FAIL
X19
V.24
X17
US1 GND US2 GND
X18
R1 R2
FL SWITCH MCS 16TX
Ord. No. 28 32 70 0
00.A0.45.1B.D2.1D
MAC
Address
1
3
5
7
2
4
6
8
9
11
13
15
10
12
14
16
9
16
10 11 12 13 14 15
1
8
2
3
4
5
6
7
MODE
ACT 100
FD
US1 US2 FAIL
X19
V.24
X17
US1 GND US2 GND
X18
R1 R2
Root bridge
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