ZyXEL Communications IES-1248-71, Руководство пользователя

Страница: 272 / 464

Chapter 42 MAC Table
IES-1248-71/73 User’s Guide
272
• If the device has not already learned the port for this MAC address, then the frame is
flooded to all ports. Too much port flooding leads to network congestion.
• If the device has already learned the port for this MAC address, but the destination port is
the same as the port it came in on, then it filters the frame.
42.2 MAC Table Screen
To open this screen, click Management, MAC Table .
Figure 142 MAC Table
The following table describes the labels in this screen.
Table 90 MAC Table
LABEL DESCRIPTION
Show port Select a port for which to display learned MAC addresses (or display all of
them).
Page X of X This identifies which page of information is displayed and the total number of
pages of information.
Previous/Next Click one of these buttons to show the previous/next screen if all of the
information cannot be seen in one screen.
Index This is the number of the MAC table entry.
Port This is the port to which the MAC address is associated.
MAC This is the MAC address of the device from which this incoming frame came.
Refresh Click Refresh to update the list of dynamically learned MAC addresses.
Flush Click Flush to remove all of the dynamically learned MAC address entries from
the MAC table.