Hi all, I have a network with 4 windows98 computers and a windows2000 computer. It all seemed fine for the last months, but today i faced this problem. All the 98 machines can be seen through the network neighbourhood, as well as all the printers, but my windows 2000 does'nt appear. I can ping all machines in my network, but can't access any resources. I went to event viewer and saw an event message from DHCPNACK. shutdown all machines, reseted router, and still the same problem. Assingned a static ip adress in the same scope, and still the same problem.How can i solve this problem?
Thanks
Dhcpnack
I chose not to reply earlier, because it is hard to tell what is going on.
Typically, a DHCP client requests to renew a lease with a specific IP address. The DHCP server sends DHCPNAK to say that you cannot have that IP address.
I have mostly seen this on a campus network, when people bring in their laptops. The laptop requests the renew a lease for an IP address that was appropriate at home, but is not appropriate for the campus environment (wrong network). The server sends DHCPNAK. The client responds by making a fresh request without specifying a preferred IP. And all usually works.
I cannot fit that scenario to what you are reporting.
When you assigned a static IP, did you configure that directly in the client machines. If you did, then DHCP should not be involved at all. So again, it is hard to square this with your description.
In short, your description is confusing. That's probably why nobody has responded.
Typically, a DHCP client requests to renew a lease with a specific IP address. The DHCP server sends DHCPNAK to say that you cannot have that IP address.
I have mostly seen this on a campus network, when people bring in their laptops. The laptop requests the renew a lease for an IP address that was appropriate at home, but is not appropriate for the campus environment (wrong network). The server sends DHCPNAK. The client responds by making a fresh request without specifying a preferred IP. And all usually works.
I cannot fit that scenario to what you are reporting.
When you assigned a static IP, did you configure that directly in the client machines. If you did, then DHCP should not be involved at all. So again, it is hard to square this with your description.
In short, your description is confusing. That's probably why nobody has responded.
I agree it is very confusing, which is why I posted here, in hopes that someone would at least discuss this issue. I have a fairly large (for a home) network as follows:
5 laptops, 3 desktops (2 are wireless), HP server, 2 blu-rays, 3 TV's, xbox & wii, Brother MFC & Canon pixma printers, Onkyo A/V receiver. router is a Cisco (not Linksys) wrvs4400n with a Surfboard 6121 modem. I have been in contact with ISP (charter) who assures me that they do not send firmware to customer owned devices. This problem started with 1 of the laptops (HP DV6) & my Asus M51bc desktop. both were set to receive ip & dns automatically. one day neither could get online, and after resetting the router and such, I looked at the events for both and found the DHCPNACK in both. I then set a static IP & gave opendns on each puter. everything was fine for about a week to 10 days, at which time the laptop could no longer get online and the Asus would drop its connection to the router if allowed to go to screensaver. I checked event logs again, and to my disbelief there was DHCPNACK errors again. I checked ipconfig & indeed it showed DHCP disabled on both. this is where I'm at now and am hoping for a little better solution than I found online, get a new router.
5 laptops, 3 desktops (2 are wireless), HP server, 2 blu-rays, 3 TV's, xbox & wii, Brother MFC & Canon pixma printers, Onkyo A/V receiver. router is a Cisco (not Linksys) wrvs4400n with a Surfboard 6121 modem. I have been in contact with ISP (charter) who assures me that they do not send firmware to customer owned devices. This problem started with 1 of the laptops (HP DV6) & my Asus M51bc desktop. both were set to receive ip & dns automatically. one day neither could get online, and after resetting the router and such, I looked at the events for both and found the DHCPNACK in both. I then set a static IP & gave opendns on each puter. everything was fine for about a week to 10 days, at which time the laptop could no longer get online and the Asus would drop its connection to the router if allowed to go to screensaver. I checked event logs again, and to my disbelief there was DHCPNACK errors again. I checked ipconfig & indeed it showed DHCP disabled on both. this is where I'm at now and am hoping for a little better solution than I found online, get a new router.