ZyXEL Communications VES-1000 Series, Руководство пользователя, Страница: 48 / 227

VES-1000 Series Ethernet Switch
5-8 Getting Started Screens
Table 5-4 Switch Setup
LABEL DESCRIPTION
Hello Time
(seconds) This is the time interval in seconds between BPDU (Bridge Protocol Data Units) configuration
message generations by the root switch. The allowed range is 1 to 10 seconds.
Max Age
(seconds) This is the maximum time (in seconds) a switch can wait without receiving a BPDU before
attempting to reconfigure. All switch ports (except for designated ports) should receive BPDUs
at regular intervals. Any port that ages out STP information (provided in the last BPDU)
becomes the designated port for the attached LAN. If it is a root port, a new root port is
selected from among the switch ports attached to the network. The allowed range is 6 to 40
seconds.
Forwarding
Delay
(seconds) This is the maximum time (in seconds) a switch will wait before changing states. This delay is
required because every switch must receive information about topology changes before it
starts to forward frames. In addition, each port needs time to listen for conflicting information
that would make it return to a blocking state; otherwise, temporary data loops might result.
The allowed range is 4 to 30 seconds.
As a general rule:
2 * (Forward Delay - 1) >= Max Age >= 2 * (Hello Time + 1)
Apply Click Apply to save your changes.
Cancel Click Cancel to begin configuring this screen afresh.
5.7 IP Setup Screen
The line card needs an IP address for it to be managed over the network. The factory default IP address is
192.168.0.1. The subnet mask specifies the network number portion of an IP address. The factory default subnet
mask is 255.255.255.0. The default gateway specifies the IP address of the default gateway (next hop) for outgoing
traffic. The default gateway is specified as 0.0.0.0.
Click IP Setup in the navigation panel to open the IP Setup screen.
Use this screen to configure the IP address of the line card.
Figure 5-4 IP Setup