Chapter 27 IP Source Guard
MES3500 Series User’s Guide
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The following table describes the labels in this screen.
27.5.3 DHCP Snooping VLAN Port Configure
Use this screen to apply a different DHCP option 82 profile to certain ports in a VLAN. To open this
screen, click Advanced Application > IP Source Guard > IPv4 Source Guard Setup > DHCP
Snooping > Configure > VLAN > Port.
Figure 129 Advanced Application > IP Source Guard > DHCP Snooping > Configure > VLAN > Port
Table 92 Advanced Application > IP Source Guard > DHCP Snooping VLAN Configure
LABEL DESCRIPTION
Show VLAN Use this section to specify the VLANs you want to manage in the section below.
Start VID Enter the lowest VLAN ID you want to manage in the section below.
End VID Enter the highest VLAN ID you want to manage in the section below.
Apply Click this to display the specified range of VLANs in the section below.
VID This field displays the VLAN ID of each VLAN in the range specified above. If you configure the
* VLAN, the settings are applied to all VLANs.
Enabled Select Yes to enable DHCP snooping on the VLAN. You still have to enable DHCP snooping on
the Switch and specify trusted ports.
Note: The Switch will drop all DHCP requests if you enable DHCP snooping and there are no
trusted ports.
Option 82
Profile
Select a pre-defined DHCP option 82 profile that the Switch applies to all ports in the specified
VLAN(s). The Switch adds the information (such as slot number, port number, VLAN ID and/or
system name) specified in the profile to DHCP requests that it broadcasts to the DHCP VLAN, if
specified, or VLAN.
You can specify the DHCP VLAN in the DHCP Snooping Configure screen (see Section 27.5
on page 224) and the DHCP option 82 profile in the IP Application > DHCP > DHCPv4 >
Option 82 Profile screen (see Section 37.4.2 on page 278).
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 this to reset the values in this screen to their last-saved values.
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