CCNA LaB Cisco 1721 Router

kaldrouby

Hi All,
I am working on my CCNA lab and ran into a small confusing issue.
i bought 2x 1721 which have a serial int and a fastethernet int so total 2 int along with a T1 , console, AUX .

The problem is i dont know how can i connect the two, or where should i plug the crossover to connect the 2nd routers when i have the F0/0 on the router plugged to the Switch.
I attached a picture for the device.

• T1 DSU CSU is not connected to anything
• FastEthernet connected to the switch
• Console is connected to the PC
• Aux is not connected to anything

Where should i plug my 2nd router ????

Ltat42a

I'm using WIC-2T cards in mine -
https://www.andovercg.com/store/Cisco-HWIC-WIC-VWIC-VIC/WIC/Cisco-WIC-2T-2-Port-Serial-for-1600-1700-2600-3600-3700-p1415.html

Got cables from here -
Dantrak Net  - New and Used Networking Equipment and Peripherals. Skeletek Racks and Accessories.

hth

Ltat42a

Here's a good page about cabling routers -
The contents of this page is informational only and complements of DANTRAK

kaldrouby

Ltat42a wrote: »

I'm using WIC-2T cards in mine -
https://www.andovercg.com/store/Cisco-HWIC-WIC-VWIC-VIC/WIC/Cisco-WIC-2T-2-Port-Serial-for-1600-1700-2600-3600-3700-p1415.html

Got cables from here -
Dantrak Net *- New and Used Networking Equipment and Peripherals. Skeletek Racks and Accessories.

hth

Its 45 for the card i bought that whole router for 40$ ive got to find a cheaper way lol.

spd3432

You can either crimp your own T1 crossover cable or purchase pre-made T1 crossover cables (looks like you can get them for as low at $6 on Amazon). Much cheaper than spending $40 per WIC.

https://learningnetwork.cisco.com/message/10668#10668

Ltat42a

kaldrouby wrote: »

Its 45 for the card i bought that whole router for 40$ ive got to find a cheaper way lol.

You can get the cards off ebay. Be mindful that there may be counterfeit cards out there, the reason I posted the link.

Andover test for Genuine Cisco WIC - Cisco | DSLReports Forums

This link refers to the 1DSU cards, but can be used to identify other Cisco cards -
Counterfeit / Fake Cisco WIC-1DSU-T1 Guide - Andover Test

hth

spd3432

Kaldrouby,

Just following up on this. What did you decide to do - T1 crossover cables or buy new WICs?
I spent about half an hour today and crimped 2 T1 crossover cables (cross 1 with 4 and 2 with 5 -- leave the remainder straight-thru) and linked a pair of 1721s together as a test. If they weren't so noisy, I'd grab one of my 2620s from the garage and set up frame relay.

Architect192

Various options...

Ethernet to Ethernet using crossover
Ethernet to Ethernet over broadcast network (the switch)
T1 to T1 using custom cable

Or simply (and probably a better solution) get 2 WIC-1T or WIC-2T and cables so you can practice serial connections