Posted on 2011-10-27
Last Modified: 2012-06-21
Hi I have a Netgear router with 4 Eth ports.. and I have connected the following:

- x-over cable connected Netgear and Cisco switch port 1 - default settings
- 2500 router via Eth0 port to port 2 of Cisco switch & IP Address range is same as Netgear Dhcp
- Laptop Win 7 plugged into Cisco switch - port 6
- Host pc XP plugged into Cisco switch - port 4

For some reason one minute I can get internet access on my laptop and as soon as I connect my Host XP pc to the cisco switch I appear to loose internet on both.... Somethings up and I dont know what..!!

The Netgear router is set to default settings...

Temporarily Ive disconnected the x-over cable between Netgear router/Internet & Cisco switch and plugged laptop directly into Netgear Eth port for direct internet access to send this thread..

Im thinking about adding a mac address on the Netgear for the following:

- 2500 Eth port
- Host pc
- Laptop

Qns1. Can anyone advise?
Question by:mikey250
    LVL 26

    Expert Comment

    How is the cisco switch configured. Can you post it.

    Author Comment

    Hi again, Soulja,  The switch is empty except for:

    Port 1
    Description X-over cable to Netgear

    Port 2
    Description connected to 2500 Eth port

    Port 4
    Description connected to Host pc

    Port 6
    Description connected to Laptop

    That is the config....

    Both Laptop Win 7 and Host pc XP are both plugged into Cisco switch and I still have internet access... After Ive played with 'WebWhatchDog' Ive installed I will then remove the 'mac addresses' and see if I still get internet access on both Host XP pc & Laptop Win 7....

    I need to go get something to eat now so as all appears well so far I will come back to this tomorrow morning first thing...Ive responded to the other 'SNMP' thread message you left me earlier.. so will wait for a reply between now and tonight and check tomorrow..!!

    Will keep this thread open just incase if that's ok!!!!
    LVL 3

    Accepted Solution

    try using "ip default-gateway <ip addy of internet router>" on the switch.

    Author Comment

    Hi Mexile,  'ip default-gateway x.x.x.x of my Netgear router not sure about that as it is just 2 hosts plugged into effectively an empty switch with default settings and no vlans either.  After adding the 'macs' of each of the 3 devices they have appeared in my Netgear router, so Im thinking that they should have appeared 'dynamically' as my laptop appears dynamically but my router Eth interface and my Host xp did not.....but as mentioned before I will eventually go back to this..

    Thanks for the advice as Im sure you are just suggesting just to get my internet back then this would be one way by adding an address from my Netgear router as the 'ip default-gateway' direct and this should then confirm internet is at least connected...

    Author Comment

    It appeared to work in the end although I did in the end add mac addresses after and all was good!

    Author Closing Comment

    As the default-gateway was a correct response although I did not use it Ive allocated points anyway as this would provide more of a robust connection.

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