Amer Networks SS2R48G4i V2 - Manual (Page 174)

SS2R24G4i/SS2R48G4i
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18.3.2 DHCP Troubleshooting
If the DHCP clients cannot obtain IP addresses and other network parameters, the following procedures
can be followed when DHCP client hardware and cables have been verified ok.
z Verify the DHCP server is running, start the related DHCP server if not running.
z If the DHCP clients and servers are not in the same physical network, verify the router responsible
for DHCP packet forwarding has DHCP relay function. If DHCP relay is not available for the
intermediate router, it is recommended to replace the router or upgrade its software to one that has
a DHCP relay function.
z In such case, DHCP server should be examined for an address pool that is in the same segment of
the switch VLAN, such a pool should be added if not present, and (This does not indicate
SS2R24/48G4i switch switch cannot assign IP address for different segments, see solution 2 for
details.)
In DHCP service, pools for dynamic IP allocation and manual binding are conflicting, i.e., if command
“network-address” and “host” are run for a pool, only one of them will take effect; furthermore, in
manual binding, only one IP-MAC binding can be configured in one pool. If multiple bindings are
required, multiple manual pools can be created and IP-MAC bindings set for each pool. New
configuration in the same pool overwrites the previous configuration.