by Ted Haubein | Dec 17, 2021 | Data Center, High Availability, NX-OS, Routing, Switching
If your new to VPC or Virtual Port Channel this is a simple article that outlines the basic overall configuration along with some terms. A VPC or Virtual Port Channel is the ability to bond together multiple switches, so that they appear as a single switch from...
by Ted Haubein | Dec 30, 2017 | IPv6, Routing, Tunneling
An automatic 6to4 tunnel allows isolated IPv6 domains to be connected over an IPv4 network to other isolated IPv6 networks. One of the key difference between automatic 6to4 tunnels vs manually configured tunnels is that the tunnel itself is not a Point-to-Point, but...
by Ted Haubein | Dec 16, 2017 | ACI, Routing
The most basic requirement of any OSPF design is that all areas in an Open Shortest Path First ( OSPF ) system must be physically connected to the backbone 0. In some cases, where this is not possible, you can use a Virtual Link to connect broken areas or none...
by Ted Haubein | Apr 14, 2016 | Routing, Tunneling
Basically Dynamic Multipoint VPN or DMVPN is a method of building dynamically secure overlay networks on top of an unsecured medium such as the Internet. There are of course Pros and Cons when it comes to building networks across the Internet. A couple of major Cons...
by Ted Haubein | Apr 6, 2016 | Routing, Switching
The overall reliability or load of an interface at a given point in time can be measured by the txload/rxload a fractional ( 255/255 = 100% ) calculation over a default average of 5 minutes. This 5 minute time interval is the default on most if not all Cisco devices,...
by Ted Haubein | Jan 27, 2016 | Routing
The burden often associated with configuring the correct line clocking and or framing for a serial interface is much like those found with Ethernet speed & duplex settings. At least that’s the way I like to think about it. Lets face it the last thing we want...
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