ZyXEL Communications 5 Series - Manual (Page 537)

ZyWALL 5/35/70 Series User’s Guide
Chapter 31 Maintenance 537
Click the Return button to go back to the Time and Date screen after the time and date is
updated successfully.
Figure 290 Synchronization is Successful
If the update was not successful, the following screen appears. Click Return to go back to the
Time and Date screen.
Figure 291 Synchronization Fail
31.6 Introduction To Transparent Bridging
A transparent bridge is invisible to the operation of a network in that it does not modify the
frames it forwards. The bridge checks the source address of incoming frames on the port and
learns MAC addresses to associate with that port. All future communications to that MAC
address will only be sent on that port.
The bridge gradually builds a host MAC-address-to-port mapping table such as in the
following example, during the learning process.
Table 192 MAC-address-to-port Mapping Table
HOST MAC ADDRESS PORT
00a0c5123456 3
00a0c5123478 (host A) 1
00a0c512349a 3