Belkin F5D7230-4 DHCP Range Error
I have a Belkin wireless router, model F5D7230-4 6000 router with
firmware version F5D7230-4_US_8.01.07.
I found that oftentimes I couldn't ping the router from a system.
I finally realized the source of the problem today. When I clicked on
, I saw the router had an IP address of 192.168.4.1
with a subnet mask of 255.255.255.248, yet the system from which I
couldn't ping any other system connected to the router and which had
no network access, had an IP address of 192.168.4.7 assigned via DHCP
from the router. With
a subnet mask of 255.255.255.248, the host address range would be
192.168.4.1 through 192.168.4.6, since the router is using 192.168.4.1
and 192.168.4.7 is the broadcast address. Yet when I attempted to change
the IP address range the router used for its DHCP assignments, it kept
resetting the IP pool ending address to 192.168.4.12 after I set it to
192.168.4.6. I would set the starting address to 192.168.4.3 and the
ending address at 192.168.4.12 then click on Apply Changes
router would reboot and I would find it had reset the last address to
be assigned by DHCP to 192.168.4.12 again. I tried setting the ending
addres to 5 with the same results.
So I changed the subnet mask to 192.168.4.240, which provides an address
range of 16 addresses (14 usable for hosts, since 192.168.4.0 is the subnet
id and 192.168.0.15 is then the broadcast address). I then tried setting
the ending IP address for the DHCP server built into the router to 7.
When the router rebooted that address was back at 12 again. This time
I just left it, since at least this time all of the addresses the built-in
DHCP server would assign will be within the subnet range.
Changing the IP address of a Dell PowerConnect 3024 Switch
You can change the IP address of a Dell PowerConnect 3024 switch
by taking the steps below.
- Connect to the system via telnet. From the initial welcome
screen you must enter a password to proceed, if password protection
is enabled. If password protection is disabled, the main menu is
displayed. By default, password protection is disabled. If password
protection is enabled, the default password is switch.
W W W EEEEEE L CCCC OOOO M M EEEEEE
W W W E L C C O O MM MM E
W W W EEEEE L C O O M MM M EEEEE
W W W E L C O O M M E
W W W E L C C O O M M E
WW WW EEEEEE LLLLLL CCCC OOOO M M EEEEEE
- From the main menu, select System Manager.
a. System Manager
b. Port Manager
c. Address Manager
d. Spanning Tree
e. VLAN and CoS Setup
f. Port Trunking
g. Port Mirroring
h. SNMP Management
i. Multimedia Support
k. Save Configuration
Hit <Enter> to configure General, IP, Password, NVRAM, Firmware, or Reset
<Ctrl-L> Refresh <Ctrl-W> Save
- Then select IP Settings.
a. General Info
b. IP Settings
c. Security Admin
d. Firmware Update
Hit <Enter> to configure the IP Address, Gateway Address, or Network Mask
<ESC> Back <Ctrl-L> Refresh <Ctrl-W> Save
Change the IP address, subnet mask, and gateway address to the appropriate
values for your LAN.
System Manager/IP Settings
IP Address: 192.168.0.4
Network Mask: 255.255.255.0
Default Gateway: 192.168.0.1
Enter this switch's IP address
<ESC> Back <Ctrl-L> Refresh <Ctrl-W> Save
Note: if you hit enter the values are changed, but not saved, so you can
revert to the previous values by powering off the switch and powering it
back on. If you are changing the address, such that the new address is no
longer in the same subnet as the existing address and the gateway IP
address will also change, rather than just changing
from an address in the same subnet to another, I would suggest changing the
gateway address first, because you can't change the IP address and then use
the cursor keys to move to other fields. When you type in the new IP address,
you can hit Escape to undo the change or Enter to accept it.
If the change would place the switch in a different subnet than the system
from which you have connected to the switch by telnet, you will be immediately
disconnected when you hit Enter.
But, if you change the gateway address first and hit Enter, the
cursor will automatically jump to the IP address field, where you can then
change the IP address. You will still be disconnected as soon as the IP
address is changed to one that isn't in the same subnet as the connecting
system, but then you've got both values changed.
- If you are just changing the IP to one in the same subnet, hit
Ctrl-W to save the new configuration. If you've been disconnected,
because you changed the IP address to one in a different subnet, reconfigure
the connecting system, log back into the PowerConnect 3024 and save the