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Industrial Managed
Ethernet Switch – EH9711
User Manual
Page
172
of
223
3.4
DHCPv4
3.4.1
Snooping Table
This Snooping Table webpage shown in Figure 3.19 displays the dynamic IP assigned information after DHCP Snooping
mode is disabled. All DHCP clients obtained the dynamic IP address from the DHCP server will be listed in this table except
for local VLAN interface IP addresses. Entries in the Dynamic DHCP snooping Table are shown on this page.
Each page shows up to 99 entries from the Dynamic DHCP snooping table, default being 20, selected through the "entries
per page" input field. When first visited, the web page will show the first 20 entries from the beginning of the Dynamic
DHCP snooping Table. The "MAC address" and "VLAN" input fields allow the user to select the starting point in the
Dynamic DHCP snooping Table. Clicking the
Refresh button
will update the displayed table starting from that or the closest
next Dynamic DHCP snooping Table match. In addition, the two input fields will - upon a
Refresh button
click - assume the
value of the first displayed entry, allowing for continuous refresh with the same start address. The
will use the last
entry of the currently displayed table as a basis for the next lookup. When the end is reached the text "No more entries" is
shown in the displayed table. Use the
button to start over.
Figure 3.19 Webpage to Monitor Dynamic DHCP Snooping Table
Table 3.13 Monitoring Descriptions of Dynamic DHCP Snooping Table
Check
Auto-refresh
box to refresh the page automatically. Automatic refresh occurs every 3 seconds. Click
Clear
button to
clear DHCP Message Received Counters and DHCP Message Sent Counters. Click
Refresh
button to refresh the page
immediately. Click
to update the table starting from the first entry in the Dynamic DHCP snooping Table. Click
to update the table entries, starting from the last entry currently displayed.
3.4.2
Relay Statistics
This webpage provides statistics for DHCP relay as shown in Figure 3.20. Description of each Server Statistics is
summarized in Table 3.14.
Label
Description
MAC Address
User MAC address of the entry.
VLAN ID
VLAN-ID in which the DHCP traffic is permitted.
Source Port
Switch Port Number for which the entries are displayed.
IP Address
User IP address of the entry.
IP Subnet Mask
User IP subnet mask of the entry.
DHCP Server
DHCP Server address of the entry.