3Com 3CR17251-91 - Switch 5500G-EI Stackable Gigabit Ethernet Getting Started Manual page 75

Adding and removing units from the Fabric does not cause any
renumbering to occur and the Fabric will continue to work normally.
Renumbering only occurs when the Fabric is next power cycled if the
units are configured to auto-number.
The unit LEDs will display the unit number in the Fabric, from 1 to 8.
Figure 27 Resilient Fabric example (using 4 Switch 5500G-EI units)
D C D C
O N O N C a u C a u
ti o n ti o n
: Th is : Th is
D o d D o d
is c o is c o
n n e n n e
D C D C
O N O N C a u C a u
ti o n ti o n
: Th is : Th is
D o d D o d
is c o is c o
n n e n n e
D C D C
O N O N
C a u C a u
ti o n ti o n
D o d D o d : Th is : Th is
is c o is c o
n n e n n e
D C D C
O N O N
C a u C a u
ti o n ti o n
D o d D o d : Th is : Th is
is c o is c o
n n e n n e
Stacking Port LED
If you are having problems, refer to
on page 83.
Unit Numbering within the Fabric
Up Connector (Blue Label)
d e v d e v
Down Connector (Yellow Label)
ic e ic e
c t a c t a h a s h a s
m o re m o re
ll p o ll p o
w e r w e r
th a n th a n
in p u in p u
o n e o n e
ts to ts to
p o w p o w
p o w p o w
e r in e r in
e r o e r o
p u t. p u t.
ff th ff th
is d e is d e
v ic e v ic e
. .
d e v d e v
ic e ic e
c t a c t a h a s h a s
ll p o ll p o m o re m o re
w e r w e r
th a n th a n
in p u in p u S TK
o n e o n e
ts to ts to
S ta c S ta c
p o w p o w
p o w p o w ki n g ki n g
e r in e r in
e r o e r o
: G re : G re
p u t. p u t.
ff th ff th e n = e n =
is d e is d e O K , O K ,
v ic e v ic e F la sh F la sh
. . in g in g
G re G re
e n = e n =
Tr a ff Tr a ff
ic , Ye ic , Ye
llo w llo w
d e v d e v
ic e ic e
h a s
c t a c t a h a s
ll p o ll p o m o re m o re
w e r w e r
th a n th a n
in p u in p u
S TK
o n e o n e
ts to ts to
p o w p o w
p o w p o w S ta c S ta c
e r in e r in ki n g ki n g
e r o e r o
p u t. p u t.
ff th ff th : G re : G re
e n = e n =
is d e is d e
O K , O K ,
v ic e v ic e
F la sh F la sh
. .
in g in g
G re G re
e n = e n =
Tr a ff Tr a ff
ic , Ye ic , Ye
llo w llo w
d e v d e v
ic e ic e
h a s h a s
c t a c t a
ll p o ll p o m o re m o re
w e r w e r
th a n th a n
in p u in p u
o n e o n e
ts to ts to
p o w p o w S TK
p o w p o w
e r in e r in
e r o e r o S ta c S ta c
p u t. p u t.
ff th ff th ki n g ki n g
: G re : G re
is d e is d e
v ic e v ic e e n = e n =
O K , O K ,
. .
F la sh F la sh
in g in g
G re G re
e n = e n =
Tr a ff Tr a ff
ic , Ye ic , Ye
llo w llo w
S TK
S ta c S ta c
ki n g ki n g
: G re : G re
e n = e n =
O K , O K ,
F la sh F la sh
in g in g
G re G re
e n = e n =
Tr a ff Tr a ff
ic , Ye ic , Ye
llo w llo w
"Solving Fabric Formation Problems"
S TK
= Li n = Li n
k F a k F a
u lt, u lt,
Ye llo Ye llo
w F la w F la
sh in sh in
g = S g = S
ta c k ta c k
F a u F a u
lt lt
S TK
= Li n = Li n
k F a k F a
u lt, u lt,
Ye llo Ye llo
w F la w F la
sh in sh in
g = S g = S
ta c k ta c k
F a u F a u
lt lt
S TK
= Li n = Li n
k F a k F a
u lt, u lt,
Ye llo Ye llo
w F la w F la
sh in sh in
g = S g = S
ta c k ta c k
F a u F a u
lt lt
S TK
= Li n = Li n
k F a k F a
u lt, u lt,
Ye llo Ye llo
w F la w F la
sh in sh in
g = S g = S
ta c k ta c k
F a u F a u
lt lt
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