Troubleshooting Dhcp Configuration - Brocade Communications Systems RFS4000 Cli Reference Manual

17
Configuring the DHCP server using controller CLI

Troubleshooting DHCP Configuration

1. The DHCP Server is disabled by default. Use the following command to enable the DHCP
2. Use the
3. A network pool without any include range is as good as not having a pool. Add a include range
4. To work properly, a host pool should have the following 3 items configured:
5. A host pool should have its corresponding network pool configured, otherwise the host pool is
6. If you create a pool and map it to an interface, it automatically gets enabled, provided DHCP is
7.
8. To set a newly created pool as a host pool, use one of the following commands:
540
Server:
RFController(config)#service dhcp
This command administratively enables the DHCP server. If the DHCP configuration is
incomplete, it is possible the DHCP server will be disabled even after the execution of this
command.
command to map the network pool to interface.
network
network 192.168.0.0/24
In the above example, 192.168.0.0/24 represents the L3 interface. When you execute this
command, no check is performed to endorse whether an interface (with the specified
IP/Netmask) exists. The verification is not performed because you can create a pool and map
it to non existing L3 interface.
When you add a L3 interface and assign an IP address to it, the DHCP server gets
enabled/started on this interface. If you have a pool for network 192.168.0.0/24, but the L3
interface is 192.168.0.0/16, DHCP is not enabled on 192.168.0.0/16, since it is different
from 192.168.0.0/24.
using the
address range
address range 192.168.0.30 192.168.0.30
•
client-name (CLI is
client-name <name>
•
fixed-address CLI is
host <ip>
•
hardware-address/client-identifier
The hardware address is
hardware-address <addr>
The client-identifier is
client-identifier <id>
If you use
client-identifier
client-identifier when it requests for IP address. The Client - identifier has to be configured in
the DHCP Client as an ASCII value and the same has to be used in the DHCP server option (for
example, the Client- identifier option).
useless. The fixed IP address configured in the host pool must be in the subnet of the
corresponding network pool.
enabled at a global level. Use the
pool/interface basis.
To set a newly created pool as a network pool, use one of the following commands:
•
network (for example, network 192.168.0.0/24)
•
address range (for example, address range 192.168.0.30 192.168.0.50)
•
host (for example, host 192.168.0.1)
command.
)
)
instead of
hardware-address
command to disable DHCP on a per
no network
Brocade Mobility RFS4000, RFS6000 and RFS7000 CLI Reference Guide
, a DHCP client sends the
53-1001931-01