Network Dictionary — Layer 3 Routing
December 1, 2009 by Greg Ferro · 5 Comments
If you say Layer 3 Routing, you look silly. Routing refers to the forwarding of packets from one network to another. Packets are Layer 3. If you are forwarding frames then that is known as switching.
When you say Layer 3 routing, you are actually saying “packet routing packets”. And that is a tautology.
So stop it. Just say routing, or Layer 3 forwarding.
I feel better now. Rant over.
Please rate this post:
Why Rate Posts?
(8 votes, average: 9.00 out of 10)
Loading ...Probably Related Posts on the Same Topic
Network Dictionary — Router
Define Router
Read the full articleNetwork Dictionary — Scalable
Scalable
1. refers to newer software or hardware features that can easily be added later
2. refers to newer versions of software or hardware that the salesperson claims can easily be added later.
3. refers to capacity (such as throughput or number of ports) that you think you need, but you would be better off buying later because by the time you need that capacity the equipment is discontinued.
Note: I have a vague idea that I copied this from somewhere else, however I didn’t note down where or who. If it is yours, please let em know.
Read the full articleNetwork Dictionary — Slugged
Slugged — used in relation to IP routing protocols (routing)
Term used to describe that a route has had it metric modified to make it higher cost and therefore not the preferred route to a given destination. Proabably derived from boxing concept of “knocking it out”.
Examples:
“having the route through the network to the VIP’s relevant VLAN slugged.”
“The routing table entry has been slugged by adding a 20 microsecond delay to the routing metrics for EIGRP to the standby context MSFC. This ensures the optimum route is stored in the routing table and the data follows the optimum route to the active context.”
Read the full articleNetwork Dictionary — Brownfield
Define Brownfield Data Centre
Read the full article
According to the Department of Redundancy Department, “Layer 3 routing” is perfectly fine.
lfmao!!! so true
Actually, there could be other types of routing, especially in telco networks. It’s therefore rather important to use this terminology sometimes…
Marko
Like what ? MPLS ? MPLS is switching not routing.
Nothing like that. I was more thinking along the lines of “call routing”, SS7, PNNI routing in ATM, SDH trail rerouting, etc.
There are important things in telco networks that are not IP. When working in an environment of mixed engineers, you need to ensure that everyone is talking the same language. I have on few occasions spent time troubleshooting “routing problems” that were not what we would call that.