Browsing articles tagged with "scope - Admins Goodies"
Aug 24, 2011
tom

Split your DHCP scope among multiple servers?

I want to implement a redundancy solution. I have two subnets all windows XP machines – each with their own DHCP server – joined by a bridge. Currently – all machines get DHCP leases from the one DHCP server with the other disabled. For when the bridge goes down – I want to split my DHCP scope among multiple servers. How can I do this on Windows XP client machines? The most common way to […]

Continue Reading »
Aug 18, 2011
tom

Increasing the DHCP range for a SonicWall Pro 300

Given a LAN with default gateway of 10.5.1.1 and subnet of 255.255.0.0 The DHCP range is currently set in the range of 10.5.2.1 to 10.5.3.254 The 10.5.1.x range is reserved for static IP’s. I want to increase the DHCP pool ( the 10.5.2.x – 10.5.3.x range is too small ) Is this DHCP scope limited to the 2.x and 3.x range because of the 255.255.0.0 subnet? I cannot change the subnet in this scenario. When […]

Continue Reading »
Aug 18, 2011
tom

Determining appropriate DHCP range

Given a LAN with default gateway of 10.5.1.1 and subnet of 255.255.0.0 The DHCP range is currently set in the range of 10.5.2.1 to 10.5.3.254 The 10.5.1.x range is reserved for static IP’s. I want to increase the DHCP pool ( the 10.5.2.x – 10.5.3.x range is too small ) Is this DHCP scope limited to the 2.x and 3.x range because of the 255.255.0.0 subnet? I cannot change the subnet in this scenario. When […]

Continue Reading »
Aug 10, 2011
tom

bash: variable loses value at end of while read loop

I have a problem in one of my shell scripts. Asked a few colleagues, but they all just shake their heads (after some scratching), so I’ve come here for an answer. According to my understanding the following shell script should print “Count is 5″ as the last line. Except it doesn’t. It prints “Count is 0″. If the “while read” is replaced with any other kind of loop, it works just fine. Here’s the script: […]

Continue Reading »
Aug 10, 2011
tom

Assign DHCP IPs for specific MAC prefixes on Windows Server 2008 R2

I’m running Windows Server 2008 R2 for my DHCP server. We are about to switch over to a VoIP system and Cisco VoIP phones. I would like to assign a specific range of IPs to these phones which will have a common MAC prefix (ex. 00:01:02). I would prefer to have them in the same scope as our computers if possible. Does anyone have any suggestions? You can use reservations to map specific IP addresses […]

Continue Reading »