Extremely Frustrating Network Issue

[noochie]

I am at my wits end on this problem. For the life of me I can not
figure it out.

Problem: Entire network drops unexpectedly, IP addressing from
wired/wireless router stops. IP 169.n.n.n on all wired/wireless
workstations. All connections to router and switch appear good and
lit. Normal activity seen on both the router and switch. No visable
signs of faulty network adapters, but then I'm not sitting in the
network closet when everything goes south. The only way to bring the
network up is by resetting the router and THAT only works for a day or
so.

Measures Taken: Resetting router (corrects problem for about an hour
or a day), upgraded firmware on router, replaced router (3 times, 3
different Linksys wired/wireless models), tested cable from router to
switch (no problems found). Replaced switch.

The only thing I can think of to do now is remove all workstations from
the network, connect them again one at a time to see if one is causing
the problem. The issue with that is the agents will not have net
access for days at a time, seeing that I would have to wait a day or
two before reconnecting the next workstation.

Network setup: Real Estate office, 23 users (mix of wired and wireless
notebooks that are brought from home), D-Link 24 port switch, Linksys 4
port/wireless-G router DHCP enabled, DSL (PPoE,Speedstream modem).

 

[Yves Leclerc]

I am at my wits end on this problem. For the life of me I can not
figure it out.

Problem: Entire network drops unexpectedly, IP addressing from
wired/wireless router stops. IP 169.n.n.n on all wired/wireless
workstations. All connections to router and switch appear good and
lit. Normal activity seen on both the router and switch. No visable
signs of faulty network adapters, but then I'm not sitting in the
network closet when everything goes south. The only way to bring the
network up is by resetting the router and THAT only works for a day or
so.

Measures Taken: Resetting router (corrects problem for about an hour
or a day), upgraded firmware on router, replaced router (3 times, 3
different Linksys wired/wireless models), tested cable from router to
switch (no problems found). Replaced switch.

The only thing I can think of to do now is remove all workstations from
the network, connect them again one at a time to see if one is causing
the problem. The issue with that is the agents will not have net
access for days at a time, seeing that I would have to wait a day or
two before reconnecting the next workstation.

Network setup: Real Estate office, 23 users (mix of wired and wireless
notebooks that are brought from home), D-Link 24 port switch, Linksys 4
port/wireless-G router DHCP enabled, DSL (PPoE,Speedstream modem).

Try replacing the Ethernet cable between DSL unit and router. Between Linksys
and D-Link also.

Try a different brand of router. I had problems with Linksys before.

Check on DHCP lease time-outs.

 

[Buck Rogers]

I am at my wits end on this problem. For the life of me I can not
figure it out.

Problem: Entire network drops unexpectedly, IP addressing from
wired/wireless router stops. IP 169.n.n.n on all wired/wireless
workstations. All connections to router and switch appear good and
lit. Normal activity seen on both the router and switch. No visable
signs of faulty network adapters, but then I'm not sitting in the
network closet when everything goes south. The only way to bring the
network up is by resetting the router and THAT only works for a day or
so.

Measures Taken: Resetting router (corrects problem for about an hour
or a day), upgraded firmware on router, replaced router (3 times, 3
different Linksys wired/wireless models), tested cable from router to
switch (no problems found). Replaced switch.

The only thing I can think of to do now is remove all workstations from
the network, connect them again one at a time to see if one is causing
the problem. The issue with that is the agents will not have net
access for days at a time, seeing that I would have to wait a day or
two before reconnecting the next workstation.

Network setup: Real Estate office, 23 users (mix of wired and wireless
notebooks that are brought from home), D-Link 24 port switch, Linksys 4
port/wireless-G router DHCP enabled, DSL (PPoE,Speedstream modem).

Hello,

I had a similar problem a year ago with a realty company I do business
with. For me, the problem was caused by an agent connecting to the
network with an infected machine. The company was then being blocked
by the ISP. Taking the infected machine off line corrected the issue.
Further, cleaning the infected computer cleared up the problem
totally.

HTH YMMV

Buck