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890-007 Rev. A 01/28/99 Page 64 © 1999 RadioLAN, Inc.
Hello Time (1–10)
Each time a network sends a frame, and no root bridge is present, the network sends a message that notifies
other networks of its request to be the root bridge. If no other network responds to this “Hello” message, the
network establishes itself as the root bridge between other connected networks.
When a network is established as being the root bridge, it sends the “Hello” message at the interval that you
select in the Hello Time field.
Enter a value between 1 and 10 seconds for the “Hello” message interval.
Forward Delay Time (4–30)
When a root bridge has redundant ports, it is necessary to set the secondary redundant port to forward
information only when the primary port has failed.
If the primary port operates normally, the bridge places the redundant port into a non-forwarding state, disallowing
communication of messages that were transmitted on the operating primary port. When the primary port fails, the
bridge places the redundant port into a forwarding state, which allows data packets to transmit to extended
networks where the message is intended.
Only the active root bridge uses this value. Any bridge not acting as the root bridge uses a dynamic value for
Forward Delay set by the root bridge.