(MS) Broadband MN- 100 Wired Network Router

The BB Utility Status message states:
Network to large to discover all the devices and display
them.
This is something new after Cox added some more TV coaxial
jacks in the house.
There is no problem with the host W98SE computer, or other
computer WXP(H.E.) access to the Internet, other than the
client computer (XP) is slower on the Internet. The
computers are isolated from each other. Any ideas of
etiology or game plan? Thanks for your thoughts. Steven.