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Home > Archive > CCNA > May 2002 > SWITCH - Router Connection
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SWITCH - Router Connection
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| ahpama 2001-10-06, 2:13 pm |
| Hi guys,
I am just a bit confused how to connect my 2900 switch to the Router. Will I use a crossover or straight cable?
Thanks. | |
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| depamo 2001-10-09, 11:19 pm |
| Think that this is in the Cisco book somewhere for the CCNA, pretty sure but when connecting Cisco Equipment together, there is a symbol next to the port identifier. On older systems with AUI there isn't one but on all Cisco equipment with RJ-45 ethernet connections you will see an 'X' next to a port identifier that does a crossover for you (hence the 'X' shape denoting a crossover). Other devices that do not crossover for you will either have an 'X' with a slash through it or no identifier at all.
A non-'X' port connected to a 'X' port is straight through since one device is crossing over the signals.
All other combinations require a crossover cable. Two crossovers, two non-crossovers as examples reqire a crossover cable (hence stacking hubs or switches, direct connection between routers or host devices). | |
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| I found this on alt.cert.cisco tonight - a neat way of remembering.
"if you're connecting same device it's Cross-over (not roll-over, don't get it confused), ie switch to switch, pc to pc, router to router. if you're connecting a device to another on a different layer it's straight-through; ie: pc to switch, switch to router. But if you're connecting a device to another and skipping a layer, it's Cross over; ie: pc to router." |
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