OPTICAL SYSTEMS DESIGN
DOC ID: 10118101
OSD2512 OPERATOR MANUAL
PAGE 300
Monitor
Security
Network
Port Security
Port
This page shows the MAC addresses secured by the Port Security module. Port
Security is a module with no direct configuration. Configuration comes indirectly
from other modules - the user modules. When a user module has enabled port security
on a port, the port is set-up for software-based learning. In this mode, frames from
unknown MAC addresses are passed on to the port security module, which in turn
asks all user modules whether to allow this new MAC address to forward or block it.
For a MAC address to be set in the forwarding state, all enabled user modules must
unanimously agree on allowing the MAC address to forward. If only one chooses to
block it, it will be blocked until that user module decides otherwise.
MAC Address & VLAN ID
The MAC address and VLAN ID that is seen on this port. If no MAC addresses are learned, a
single row stating
"No MAC addresses attached"
is displayed.
State
Indicates whether the corresponding MAC address is blocked or forwarding. In the blocked
state, it will not be allowed to transmit or receive traffic.
Time of Addition
Shows the date and time when this MAC address was first seen on the port.
Age/Hold
If at least one user module has decided to block this MAC address, it will stay in the blocked
state until the hold time (measured in seconds) expires. If all user modules have decided to
allow this MAC address to forward, and aging is enabled, the Port Security module will
periodically check that this MAC address still forwards traffic. If the age period (measured in
seconds) expires and no frames have been seen, the MAC address will be removed from the
MAC table. Otherwise a new age period will begin.
If aging is disabled or a user module has decided to hold the MAC address indefinitely, a dash
(-) will be shown.
Buttons
:
Use the port select box to select which port to show status for.
Auto-refresh
: Check this box to refresh the page automatically. Automatic refresh
occurs every 3 seconds.
: Click to refresh the page immediately
