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RIP 2 is nice for smaller environments<br />
EIGRP as you go bigger or even OSPF<br />
and BGP is used a lot at the ISP level.<br />
<br />
But it is still 100% determined on your needs.
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RIP 2 is nice for smaller environments
EIGRP as you go bigger or even OSPF
and BGP is used a lot at the ISP level.

But it is still 100% determined on your needs.

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Some places still use IS-IS but that from my experience is getting used less and less.
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Some places still use IS-IS but that from my experience is getting used less and less.

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Thanks for the detailed explanation.
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What is the most important routing protocols to know for each of these environments: small business, medium business, corporate business, and ISPs?<br />
<br />
I understand that each environment probably uses different protocols and I'd like to know which are most commonly used in each, assuming that they are not outdated environments. <br />
<br />
I'm guessing it gets more vague as you move up the ladder, but I'm curious to know what people have seen out there in the business world anyway.<br />
<br />
(BTW, I'm a newb. If it isn't already obvious :)
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What is the most important routing protocols to know for each of these environments: small business, medium business, corporate business, and ISPs?

I understand that each environment probably uses different protocols and I'd like to know which are most commonly used in each, assuming that they are not outdated environments. 

I'm guessing it gets more vague as you move up the ladder, but I'm curious to know what people have seen out there in the business world anyway.

(BTW, I'm a newb. If it isn't already obvious :)

What is the most important routing protocol to know for each environment: small, medium, and large businesses, and ISPs?

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

Networking Hardware-Other

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software Firewalls

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.