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wilsonchua
Joined: 25 Feb 2014
Posts: 5
Location: singapore
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 Posted: Tue Feb 25, 2014 11:25 am
Post subject: DHCP IP address scope |
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How to change the DHCP IP address scope from a /24 (255.255.255.0) to a /18 (255.255.0.0) ?
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alan
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Joined: 26 Sep 2003
Posts: 4435
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Posted: Wed Feb 26, 2014 5:39 am
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Please check out chapter 3 (DHCP section) of firstspot_guide.pdf.
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wilsonchua
Joined: 25 Feb 2014
Posts: 5
Location: singapore
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Posted: Thu Feb 27, 2014 11:54 pm
Post subject: dhcp ip address scope |
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So does it mean that i simply need to change the subnet mask on my NIC from 255.255.255.0 to 255.255.0.0 ?
Will doing this change the dhcp scope automatically?
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alan
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Posted: Fri Feb 28, 2014 3:19 am
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Yes.
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wilsonchua
Joined: 25 Feb 2014
Posts: 5
Location: singapore
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Posted: Mon Apr 21, 2014 2:58 am
Post subject: Wrong netmask given by DHCP service |
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So I have changed the netmask on the firstspot server from 255.255.255.0 (default) to 255.255.0.0
This is to allow for a larger number of IP addresses.
We find that the firstspot system provides the wrong netmask, ie: 255.255.255.255 instead of 255.255.0.0
For example:
Firstspot IP is 10.20.7.1 255.255.0.0
Client IP is 10.20.18.150 255.255.255.255
So client can not ping firstspot since they are on different subnets!
What should I be doing? I have already restarted the firstspot several times.
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alan
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Posted: Mon Apr 21, 2014 3:40 am
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This is due to the Client Isolation setting.
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wilsonchua
Joined: 25 Feb 2014
Posts: 5
Location: singapore
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Posted: Fri May 16, 2014 6:44 am
Post subject: Thanks |
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Thanks I will try it out.
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paulm
Joined: 28 Jun 2008
Posts: 81
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Posted: Mon Jan 05, 2015 9:51 am
Post subject: which should it be |
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| so what are you saying should the client isolation be on or off? for this to work as i don't want to mess my clients about testing |
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alan
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Posted: Mon Jan 05, 2015 10:04 am
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If your Client Isolation is working, don't change anything.
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paulm
Joined: 28 Jun 2008
Posts: 81
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Posted: Fri Jan 09, 2015 8:43 am
Post subject: clarity |
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Hi I'm sorry to be pedantic
But to be clear you change the sub net mask on the network adaptor card 255.255.0.0
I have two questions
1. do you change the dhcp scoop subnet mask in the firstspot server to the same as the the card?
2. if client isolation is off leave it off if its on leave it on , is that correct? |
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alan
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Posted: Fri Jan 09, 2015 8:46 am
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1. You only need to change the Visitor Network Interface subnet mask under Configuration Manager -> Dispatcher (Main), and then restart FirstSpot
2. Yes
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