I was at "The Golden Land, Myanmar" doing an integration with a PABX vendor for our Cisco 2911 router. I got the chance to visit the Schwedagon Pagoda, which is a Buddhist temple that existed more than 2600 years. Its stupas or heaps are made of real gold!
I had to crimp and do a quick test on an E1 crossover cable that I prepared. Here's the cable pin out diagram:
I used an RJ45 straight-through cable and cut out the unused wires. There's a gap between wire pairs on pin 3. I used a paper clip to fill that gap while inserting the four wires.
This is what it looks like after crimping the cable to the RJ45 connector.
Since I don't have a cable tester, I used two Cisco 2811 routers with VWIC E1 cards inserted to check the physical layer. There's no configuration involved on the routers and just used their default settings. Notice there's an amber/orange alarm (AL) on the E1 if there's no connection detected and green light on Carrier Detect (CD) if both ends are connected.
We issue a show controller e1 to check the E1 status.
R1#show controller e1
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20090113, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (172 seconds elapsed):
10 Line Code Violations, 15 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs
R2#show controller e1
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20090113, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (220 seconds elapsed):
15 Line Code Violations, 1197 Path Code Violations
2 Slip Secs, 0 Fr Loss Secs, 3 Line Err Secs, 0 Degraded Mins
1 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 114 Unavail Secs
*Nov 21 08:05:14.455: %CONTROLLER-5-UPDOWN: Controller E1 0/0/0, changed state to down (LOS detected)
*Nov 21 08:05:20.455: %CONTROLLER-5-UPDOWN: Controller E1 0/0/0, changed state to up
I had to crimp and do a quick test on an E1 crossover cable that I prepared. Here's the cable pin out diagram:
I used an RJ45 straight-through cable and cut out the unused wires. There's a gap between wire pairs on pin 3. I used a paper clip to fill that gap while inserting the four wires.
This is what it looks like after crimping the cable to the RJ45 connector.
Since I don't have a cable tester, I used two Cisco 2811 routers with VWIC E1 cards inserted to check the physical layer. There's no configuration involved on the routers and just used their default settings. Notice there's an amber/orange alarm (AL) on the E1 if there's no connection detected and green light on Carrier Detect (CD) if both ends are connected.
We issue a show controller e1 to check the E1 status.
R1#show controller e1
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20090113, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (172 seconds elapsed):
10 Line Code Violations, 15 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 2 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs
R2#show controller e1
E1 0/0/0 is up.
Applique type is Channelized E1 - balanced
No alarms detected.
alarm-trigger is not set
Version info Firmware: 20090113, FPGA: 20, spm_count = 0
Framing is CRC4, Line Code is HDB3, Clock Source is Line.
Data in current interval (220 seconds elapsed):
15 Line Code Violations, 1197 Path Code Violations
2 Slip Secs, 0 Fr Loss Secs, 3 Line Err Secs, 0 Degraded Mins
1 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 114 Unavail Secs
*Nov 21 08:05:14.455: %CONTROLLER-5-UPDOWN: Controller E1 0/0/0, changed state to down (LOS detected)
*Nov 21 08:05:20.455: %CONTROLLER-5-UPDOWN: Controller E1 0/0/0, changed state to up
No comments:
Post a Comment