DGS-3700-12/DGS-3700-12G Series Layer 2 Gigabit Ethernet Switch User Manual
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Parameter Description
VLAN Name Specifies a VLAN or list of VLAN s by VLAN Name.
VLAN ID (e.g.:1,4-6) Specifies a VLAN or list of VLANs by VL AN ID.
Max Learning
Address
Specifies the maximum number of port-security entries that can be learned by this VLAN. If
this parameter is set to 0, no user can get authorization on this VLAN.
If the setting is smaller than the number of current learned entries on the VLAN, t he com m and
will be rejected. The default value is No Limit.
Click Apply to implement changes.

Port Security Entries

This window is used to configure port security entries by MAC address, p ort number and VLAN ID.
To view this window, click Security > Port Secu rity > Port Security Entries as shown below:
Figure 5 - 11 Port Security Entries window
The following parameters can be set:
Parameter Description
VLAN Name Specifies a VLA N or list of VLANs by VLAN Name.
VLAN ID (e.g.:1,4-6) Specifies a VLAN or list of VLANs by VL AN ID.
Port List Specifies a port or list of ports to be configured.
Click Apply to implement changes.
DHCP Server Screening Settings
This function allows the user to not only restrict all DHCP Server packets but also to receive any specified DHCP
server packet by any specified DHCP client, it is useful when one or more DHCP servers are present on the network
and both provide DHCP services to different distinct groups of clients . The first time the DHCP filter is en abled it will
create both an access profile entry and an access rule per por t entry, it will also create other access rules. These rules
are used to block all DHCP server packets. In addition to a perm it DHCP entry it will also create one access pr ofile
and one access rule entry the first time the DHCP c lie nt M AC address is used as the client MAC address. The Source
IP address is the same as the DHCP server’s IP address (UDP por t number 67) . These rules are used to perm it the
DHCP server packets with specific fileds, which the user has configured.
When DHCP Server filter function is enabled all DHCP Server packets wil l be filtered from a specific port.
The DHCP Server Screening folder contains two windows: DHCP Screening Port Settings and DHCP Offer Filtering.