Nortel Networks 10BASE-T Manual Do Utilizador
Using the BayStack 410-24T 10BASE-T Switch
1-36
309985-C Rev 00
•
You can downline upgrade the entire stack from any switch in the stack.
•
You can access and manage the stack using a TELNET connection or any
generic SNMP management tool through any switch port that is part of the
stack configuration.
generic SNMP management tool through any switch port that is part of the
stack configuration.
•
When stacking three or more switches, use the longer (1-meter) cascade
max-return cable (PN 303979-A) to complete the link from the last unit in the
stack to the base unit.
max-return cable (PN 303979-A) to complete the link from the last unit in the
stack to the base unit.
Redundant Cascade Stacking Feature
BayStack 410-24T switches allow you to connect up to eight units into a
redundant cascade stack. If any single unit fails or if a cable is accidently
disconnected, other units in the stack remain operational, without interruption.
redundant cascade stack. If any single unit fails or if a cable is accidently
disconnected, other units in the stack remain operational, without interruption.
powered-down unit in the stack configuration:
1.
, unit 3 becomes nonoperational.
This can be the result of a failed unit, or simply because the unit was powered
down.
down.
2.
Unit 2 and unit 4, directly upstream and downstream from unit 3, sense the
loss of link signals from unit 3.
loss of link signals from unit 3.
a.
Units 2 and 4 automatically loop their internal stack signals (A and B).
b.
The Cas Up LED for unit 2 and the Cas Dwn LED for unit 4 turn on
(yellow) to indicate that the stack signals are looped.
(yellow) to indicate that the stack signals are looped.
3.
The remaining stack units remain connected.
Although the example shown in
shows a failed unit causing the stack
to loop signals at the points of failure (A and B), the system reacts the same way if
a cable is removed.
a cable is removed.