Networking
Configure QoS for VPN Tunnel on Cisco Router
Class Maps are referenced by Policy Maps, which are then applied to the external interface. VPN traffic is "pre-classified" before entering the external interface. The example below is based on 512 kbps bandwidth available for upload traffic.
Is Charter Throttling My Bandwidth?
I had recently worked on a problem with a customer in which they had been experiencing issues with the phone quality of their Voice-over-IP (VOIP) phone system at one of their branch offices (VPN connection). During my review, I was told the Internet connection was supposed to be 20×2 (20 Mbps down and 2 Mbps up), but my speed tests were showing 3Mbps down/512 Kbps up. What?!
I asked my customer to verify with their ISP (Charter Communications) what the contracted bandwidth was and they confirmed that they were paying for 20×2 service. Many phone calls later, the customer determined "unofficially" from a friendly insider at the ISP that they may be throttling their bandwidth due to BitTorrent traffic. A BitTorrent client was discovered in use by an employee at that location. After the BitTorrent client was stopped, the bandwidth resumed to normal levels.
Using VMware Server 1.x to Break Exchange 2007 OWA
Another dumb mistake: installed VMware Server 1.8 on an Exchange 2007 SP1 server with the client access role installed. Instead of choosing the “custom” install option, as I usually do, I was in a hurry and chose “complete”. Halfway through the install, I remembered why I never blindly choose “complete”; VMware Server Management Interface. VMSI is a web-based management interface for VMware Server that when installed changes the preferences for IIS by enabling 32-bit ASP on 64-bit Windows. This breaks OWA (64-bit ASP) because IIS 6.0 does not support running 32-bit mode and 64-bit mode at the same time on 64-bit Windows.
Unable to browse My Network in a 2008 Domain
As Windows Server 2008 takes it’s place in more data centers, serving as a domain controller, design changes are starting to impact end users.
One of these notable changes effects a workflow most users have picked up: browsing the network to find file servers and shares.
We have seen more and more customers call in with an error similar to below (wording may differ from client to client):
