How not to use DHCP Superscopes

By brendon on December 8th, 2009

Have you ever needed to run several separate subnets on the same physical network (not VLANs) to use different routers?? A good example of this is a single Wireless network where you want to run more than 243 devices but you don’t want the overhead of a Class B subnet.

Simply create your Class C address ranges, each in a separate DHCP scope. Then select all the new scopes and add them to a new superscope. Now when any clients from this network request addresses, they will be sent any address from the appropriate range. More information is in KB161571.

What you don’t do is use Superscopes to group several VLAN’s at a single site. That just breaks stuff. (Trust me)

CITRIX Repeater with WCCP

By brendon on September 9th, 2009

When deploying a CITRIX Repeater (formally known as WANScaler) using WCCP with a cisco router we found that the configuration on the KB isn’t quite right. Read on for the configuration. Continue Reading

Windows IAS for Telstra WAN

By brendon on August 31st, 2009

I posted previously on information Telstra needs to configure in order for their RADIUS servers to proxy authentication attempts to a Windows IAS Server. I have been asked for the necessary configuration on the IAS server to work with Telstra.

Telstra likes to provide a 10MB document outlining how RADIUS works but not how to configure it. Here is a working example of IAS configuration for the Telstra RADIUS servers.

Continue Reading

Telstra Radius Proxy to IAS

By brendon on August 5th, 2008

For all those fortunate enough to live in Australia but unfortunate enough to deal with Telstra managed WAN’s, I have found out the configuration necessary to make the TELSTRA RADIUS proxy servers talk with a Microsoft Internet Authentication Server (IAS).

I realise you will probably never need to know this but I’ll bet my bike I will run into this problem again in the future. You will need to forgive the Double-Dutch, this is the code strait from the Telstra Tech’s mouth.

  • Under Dial-SMC
  • Operations to RAN
  • SS-Accept
  • Interfere RADIUS
  • Attribute 88
  • Framed Port = Att 88 = none (default = gen/sub)

I hope this helps you as much as it did me.