Dell PowerConnect B-FCXs, Руководство по настройке

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170 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
PowerConnect B-Series FCX hitless stacking
5
Figure 15 illustrates hitless stacking support during stack formation. Operational stages 1 and 2
are also shown in this illustration.
FIGURE 15 Hitless stacking support during stack formation
St a ndby become s Active immedi a tely, no reboot
occ u r s , hot s w a p t a ke pl a ce. The St a ndby i s
ass igned a fter 30 s econd s . Tr a ffic lo ss i s expected.
Not a llowed Switchover
F
a
ilover
St a ndby become s Active immedi a tely (no del a y),
no reboot occ u r s , config u r a tion p a r s ing a nd
hot s w a p t a ke pl a ce. The St a ndby i s ass igned
a fter 30 s econd s . Tr a ffic lo ss i s expected.
Not a llowed Switchover
F
a
ilover
St a ndby become s Active immedi a tely, no reboot
occ u r s . The St a ndby i s ass igned a fter 30 s econd s .
Tr a ffic lo ss i s expected.
Not a llowed
Switchover
St a ndby become s Active (no del a y), no reboot.
St a ndby i s ass igned a fter 30 s econd s .
No tr a ffic lo ss i s expected.
Allowed. No tr a ffic lo ss i s expected.
Switchover
F
a
ilover
The boot u p St a ndby w a it s
for 40 s econd s then reboot s
a ll u nit s incl u ding it s elf.
Not a llowed Switchover
F
a
ilover
All u nit s (incl u ding St a ndby)
a re rebooted
Not a llowed Switchover
F
a
ilover
Member 2 a nd 3 become “orph a n s ”
Not a llowed Switchover
F
a
ilover
The s t a ck i s f u lly oper a tion a l a nd re a dy
for r a pid f a ilover a nd s witchover
After the s t a ck boot s u p, Member 2
i s a “boot u p St a ndby”. There i s
no St a ndby ass igned yet.
Protocol re a dy
70 s ec. for protocol le a rning
W a it for 30 s ec. (if the Active i s u p > 2 min.) W a it for 60 s ec. (if the Active i s u p < 2 min.)
Other u nit s a re hot s w a pped
Exi
s
ting
s
t
a
ck (
a
fter “write mem”
a
nd “relo
a
d”)
Config u r a tion p a r s ed on St a ndby
Config u r a tion s ynchronized (r u nning
config i s copied from the Active)
St a ndby ass igned by the Active
A s t a ck i s cre a ted us ing s ec u re s et u p or “ s t a ck en a ble”
New St a ck
F
a
ilover
1
Active 1
Member 2
Member 3
1
Active 1
Member 2
Member 3
The s t a ck i s formed a nd f u lly oper a tion a l a fter
a ll u nit s except the Active controller i s rebooted
1
Active 1
Member 2
Member 3
FCX s t a ck form a tion
End of St a ge 1
End of St a ge 2
Device s t a ck form a tion