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Community Member

Physical Ports / Cabling

[On the 2501, 2503, 2521, 2509, 2524 only]

Greetings all.

Can somene please tell me / discuss the physical ports and the cabling it would need to connect / use each port (configurn). I am especially interested in knowing also about the 'aui' ports.

Thanks,

kishan

1 ACCEPTED SOLUTION

Accepted Solutions
Gold

Re: Physical Ports / Cabling

Kishan,

I think you're looking for information on the Ethernet AUI (Attachment User Interface) port, not the AUX (Auxiliary) serial port next to the Console port. Am I right?

There many documents on Cisco's website detailing the pinouts of this port. But I my 18+ years of networking, I have never needed to know those details; it's a pretty standard 10-megabit interface. What you're probably after is how to use it.

To connect that interface to an Ethernet LAN, you used to attach an AUI cable to that port, and a bulky external Ethernet transceiver to the other end of the cable. These days it's more common to use a mini-transceiver, and attach it directly to the router (no cable required).

There are AUI transceivers for every type of Ethernet LAN cabling: coaxial, UTP, fiber. UTP is the most commonly used, followed by fiber. Allied Telesyn (http://www.alliedtelesyn.com) makes the AUI transceivers I see most often, but there are many other manufacturers out there. Go to any on-line reseller and search for "AUI transceiver" to see what's available.

Think of the AUI transceiver as a 10-megabit media converter: it converts the generic AUI port into the kind of Ethernet port you need -- UTP RJ-45, fiber ST, coaxial BNC, whatever.

Don't confuse the AUI with the MII (Media Independent Interface), which is like an AUI but for 100-megabit Fast Ethernet connections.

Hope this helps.

5 REPLIES
Silver

Re: Physical Ports / Cabling

Community Member

Re: Physical Ports / Cabling

Thank you very much for the very useful link. However, I still want / need to know about the AUI port on the 2500 series routers: how-to connect, how-to configure, use, etc.

Thanks,

kishan

Silver

Re: Physical Ports / Cabling

it takes a rj45 rolled , it is in the url I posted earlier

Gold

Re: Physical Ports / Cabling

Kishan,

I think you're looking for information on the Ethernet AUI (Attachment User Interface) port, not the AUX (Auxiliary) serial port next to the Console port. Am I right?

There many documents on Cisco's website detailing the pinouts of this port. But I my 18+ years of networking, I have never needed to know those details; it's a pretty standard 10-megabit interface. What you're probably after is how to use it.

To connect that interface to an Ethernet LAN, you used to attach an AUI cable to that port, and a bulky external Ethernet transceiver to the other end of the cable. These days it's more common to use a mini-transceiver, and attach it directly to the router (no cable required).

There are AUI transceivers for every type of Ethernet LAN cabling: coaxial, UTP, fiber. UTP is the most commonly used, followed by fiber. Allied Telesyn (http://www.alliedtelesyn.com) makes the AUI transceivers I see most often, but there are many other manufacturers out there. Go to any on-line reseller and search for "AUI transceiver" to see what's available.

Think of the AUI transceiver as a 10-megabit media converter: it converts the generic AUI port into the kind of Ethernet port you need -- UTP RJ-45, fiber ST, coaxial BNC, whatever.

Don't confuse the AUI with the MII (Media Independent Interface), which is like an AUI but for 100-megabit Fast Ethernet connections.

Hope this helps.

Community Member

Re: Physical Ports / Cabling

Dear Sir:

Greetings and thanks for ur post in response to my question ... and yes, thats exactly what my questions was about. I really wanted to know the how-to use rather than the pin details ... I so appreciate your response. I wish it would not be asking for too much, but if you could can you please send me your emal address where I can write to (fear not!: I will not make a habit of it!) Please send me your email to me at: kishanb@sciencesinc.com.

Thank you so very much,

kishan

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