by Ted Haubein | Oct 15, 2012 | Routing
Multicast is a bandwidth conserving technology that reduces traffic by simultaneously delivering a single stream of information to thousands of corporate recipients and homes. Applications that take advantage of multicast technologies include video conferencing,...
by Ted Haubein | Sep 8, 2012 | Routing, Switching
The Journy From Hybrid to Native I want to start out by saying I never really liked CATOS. Okay. There I said it. The decision to upgrade was always simple for me because it was not IOS, and Cisco never planned on keeping it around anyway. The only regret I have was...
by Ted Haubein | Jul 15, 2012 | Routing, Tunneling
Generic Routing Encapsulation or GRE for short provide a mechanism to transport packets of one protocol within another protocol usually TCP. The protocol that is carried across or encapsulated is referred to as the passenger protocol, and the protocol that is used for...
by Ted Haubein | Jun 15, 2012 | Routing
From the beginning the IPv4 header RFC 791 defined a 1 byte field called the Type of Service or ToS. The intent was to use this 1 byte field to mark packets for preferential treatment in conjunction with QoS. The ToS field was further divided into a high order 3 bits...
by Ted Haubein | May 15, 2012 | Routing
MPLS is a packet forwarding technology which uses labels to make data forwarding decisions. Originally developed by Cisco and was referred to as Tagged Switching, and was later adopted by the IETF and renamed MPLS. With MPLS, the Layer 3 header analysis is done just...
by Ted Haubein | Mar 31, 2012 | Cryptography, Routing, Tunneling
In most real world situation Site to Site VPN Tunnels are usually created between a pair Firewalls, however that is not the only way to achieve secure Site to Site encryption. For that matter one method is just as good as the other. It all depends on your situation...
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