MS/Cisco metric difference, confused

  • Thread starter Thread starter Ali
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A

Ali

Hi all...
I've been into CCNA for a while now and unfortunately I've run into 2
different 'settings' for one specific term.
on page 419 of the CCNA Certification Guide (Wendell Odom,CCIE), it says:

"Router B's metric for connected routes is 0 because there is no router
between B and those subnets."

ok... I get that. on the other hand I was reading through the 2k Resource
Kit, Internetworking Guide, and in the figures, I see that directly
connected networks are stated with a hop count of 1. I assume that the term
'metric' and 'hop count' are synonymous in this case.
so which one is the right one? I don't really think that MS is right about a
directly connected network having a hop count of 1, because a directly
connected network doesn't get 'hopped' through another router, it's right
there beside it. any suggestions?

thanks,
Ali,
MCSA
 
No, metric and hop count are not necessarily the same. Server 2003 uses
metrics to indicate speed rather than hop counts. (eg figures like 10,20,30
or 50).

Machines on the same segment and in the same IP subnet don't use routing
at all. Traffic is delivered directly over the wire (as Ethernet frames
using hardware addresses for example). I suspect this is what Cisco calls a
zero hop.

They only need a router to reach machines in a different subnet. If
they have a router (in their subnet) which is connected to the target
subnet, then they are only one hop away. The router can directly deliver the
packet in the "other" subnet.
 
tx for the reply Bill =o)

Bill Grant said:
No, metric and hop count are not necessarily the same. Server 2003 uses
metrics to indicate speed rather than hop counts. (eg figures like 10,20,30
or 50).

Machines on the same segment and in the same IP subnet don't use routing
at all. Traffic is delivered directly over the wire (as Ethernet frames
using hardware addresses for example). I suspect this is what Cisco calls a
zero hop.

They only need a router to reach machines in a different subnet. If
they have a router (in their subnet) which is connected to the target
subnet, then they are only one hop away. The router can directly deliver the
packet in the "other" subnet.

Ali said:
Hi all...
I've been into CCNA for a while now and unfortunately I've run into 2
different 'settings' for one specific term.
Click to expand...
Click to expand...
 
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