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Router Hops?

By jmcdonough ·
I am studying for NetWare's Networking Technologies test (050-632) and have a question about Router Hops. I understand what it is, but when determining the distance; do you count the router from which you are starting out or is the next closest or "lowest cost" router the first Hop. The book seems to be contradictive.

Any help would be greatly appreciated
Jamie

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Hop Counting

by G. R. Evans In reply to Router Hops?

The way I've always thought of it is every time it passes all the way through a router is one hop.
Source>output port>>Input port>Internal switching>Output port>> = one hop.
Or to quote from my CCNA book:
Term describing the passage of a data packet between two network nodes (for example, between two routers).

Hope this helps.

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Hopping around

by HJF In reply to Hop Counting

When thinking of router hops, pretend you are a frog and the router is a lily pad. If you are sitting on the lily pad and you want to go to the next lilly pad, you do it in a "hop." You don't count the lily pad, you count the *hop*.

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Router hops

by doug_higginbotham In reply to Router Hops?

"HOPS" do not include the local router(the router the sending machine is connected to.) "HOPS" start at the first router outside the local.

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From Host to Target each does count

by G. R. Evans In reply to Router hops

From Host to Target each device does count.
The easiest way I can tell you to determine how many hops are used is for you to use tracert to check the route from your machine to the target.
Hop count is not determined by whether a device is on yourlocal/intranetwork or not.
Hop count with a low DV protocol such as RIP can exceed thirty, killing the packet, without ever seeing the light of the Internet.
Example:
I decide to see the path to Yahoo.com from my PC:
Tracert www.yahoo.com

Iget:

Tracing route to www.yahoo.akadns.net [216.32.74.55]
over a maximum of 30 hops:

1 95 ms 90 ms 111 ms pm5.bluenet.net
2 95 ms 112 ms 116 ms master.bluenet.net
3 117 ms 113 ms 128 ms 206.105.200.53
4 126 ms 117 ms 117 ms jcty-bb2-FE0-1-1-1.sprintsvc.net

5 131 ms 139 ms 127 ms wkfs1-S3-1-1.sprintsvc.net
6 133 ms 163 ms 133 ms serial2-1-1.GW2.RDU1.ALTER.NET
7 134 ms 135 ms 137 ms 178.ATM0-1-0.XR1.TCO1.ALTER.NET

8 142 ms 135 ms 141 ms 193.ATM10-0-0.GW2.DCA3.ALTER.NET
9 144 ms 150 ms 146 ms exodus2-tco1-oc3.customer.ALTER.NET
10 150 ms 146 ms 141 ms bbr02-g4-0.hrnd01.exodus.net
11 133 ms 137 ms 135 ms bbr02-p2-0.stng01.exodus.net
12 137 ms 154 ms 138 ms dcr04-g9-0.stng01.exodus.net
13 152 ms 143 ms 143 ms csr21-ve242.stng01.exodus.net
14 145 ms 148 ms 144 ms 216.35.210.122
15 148 ms 149 ms 145 ms www.yahoo.akadns.net
Trace complete.


Notice it not only counted my gateway, but every router in the local network, and every router in every network in between.

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hops..

by TechPK In reply to From Host to Target each ...

hop is a next router from the last one, from which it has gotten a message. hops can be determined upon several factors and one of them is by Cost. Router with Lowest cost will be the next Hop. :-)

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Router Hops

by renehf In reply to Router Hops?

Hello Jarnie

In Cisco terms the "lowest cost" router is the first Hop. Since both Novell and Cisco meet IEEE standards, I think that You can trust my answer.

Best Regards

Ren?

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