ZyXEL Communications XS3800-28, Руководство пользователя, Страница: 737 / 789

Chapter 88 Networked AV Mode
XS3800-28 User’s Guide
737
The following table describes the labels in this screen.
88.34 SECURITY
The following sections introduce the SECURITY screens.
88.35 Access Control
A console port and FTP are allowed one session each, Telnet and SSH share nine sessions, up to five Web
sessions (five different user names and passwords) and/or limitless SNMP access control sessions are
allowed.
Table 400 SWITCHING > VLAN > VLAN Port Setup
LABEL DESCRIPTION
Port This field displays the port number.
* Settings in this row apply to all ports.
Use this row only if you want to make some settings the same for all ports. Use this row first to set
the common settings and then make adjustments on a port-by-port basis.
Note: Changes in this row are copied to all the ports as soon as you make them.
Ingress Check If this check box is selected, the Switch discards incoming frames on a port for VLANs that do
not include this port in its member set.
Clear this check box to disable ingress filtering.
PVID A PVID (Port VLAN ID) is a tag that adds to incoming untagged frames received on a port so
that the frames are forwarded to the VLAN group that the tag defines.
Enter a number between 1and 4094 as the port VLAN ID.
Acceptable
Frame Type Specify the type of frames allowed on a port. Choices are All , Tag Only and Untag Only .
Select All from the drop-down list box to accept all untagged or tagged frames on this port.
This is the default setting.
Select Tag Only to accept only tagged frames on this port. All untagged frames will be
dropped.
Select Untag Only to accept only untagged frames on this port. All tagged frames will be
dropped.
VLAN Trunking Enable VLAN Trunking on ports connected to other switches or routers (but not ports directly
connected to end users) to allow frames belonging to unknown VLAN groups to pass through
the Switch.
Isolation Select this to allows this port to communicate only with the CPU management port and the
ports on which the isolation feature is NOT enabled.
Apply Click Apply to save your changes to the Switch’s run-time memory. The Switch loses these
changes if it is turned off or loses power, so use the Save link on the top navigation panel to
save your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to begin configuring this screen afresh.
Table 401 Access Control Overview
Console Port SSH Telnet FTP Web SNMP
One session Share up to 9 sessions One session Up to 5 accounts No limit