SNR S2940-8G-v2, Configuration Manual

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SNR S2940-8G-v2 Switch Configuration Guide
DHCP Configuration
Global Mode
ip dhcp excluded-address <low-address>
[<high-address>]
no
ip dhcp excluded-address <low-
address> [<high-address>]
Exclude the addresses in the address pool that
are not for dynamic allocation.
(c) Configure manual DHCP address pool parameters
Command Explanation
DHCP Address Pool Mode
hardware-address <hardware-address> [{
Ethernet | IEEE802 | <type-number> }]
no hardware-address Specify/delete the hardware address when as-
signing address manually.
host <address> [<mask> | <prefix-length>]
no host Specify/delete the IP address to be assigned to
the specified client when binding address manu-
ally.
client-identifier <unique-identifier>
no client-identifier Specify/delete the unique ID of the user when
binding address manually.
3. Enable logging for address conflicts
Command Explanation
Global Mode
ip dhcp conflict logging
no ip dhcp conflict logging Enable/disable logging for DHCP address to detect address
conflicts.
Admin Mode
clear ip dhcp conflict <address |
all> Delete a single address conflict record or all conflict records.
34.3 DHCP Relay Configuration
When the DHCP client and server are in different segments, DHCP relay is required to transfer
DHCP packets. Adding a DHCP relay makes it unnecessary to configure a DHCP server for
each segment, one DHCP server can provide the network configuration parameter for clients from
multiple segments, which is not only cost-effective but also management-effective.
DHCP Relay DHCP Client
DHCPDiscover (Broadcast)
DHCPOFFER (Unicast)
DHCPREQUEST (Broadcast)
DHCPACK (Unicast)
DHCPDiscover
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCP Server
Figure 34.2: DHCP relay
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