clocking problem

[joeblough]

Good Day,

I tried to connect a catalyst 2501 and a 2514 using a crossed serial cable.

Originally, the 2501 was functioning as the DCE, and the connection failed. When first configured it would come up, then go down after a brief time. I tried various clock rates, changed the encapsulation and nothing.

Once I switched the cable around so that the 2514 was the DCE, it worked fine.

This is nothing critical, I'm just curious if anyone has some insights.

Here's a snippet of the debug serial interface on the problem router.

00:57:44: HD(0): New serial state = 0x0640

00:57:44: HD(0): Cable is unplugged.

00:57:44: HD(1): got an interrupt state = 0x8055

00:57:44: HD(1): New serial state = 0x0055

00:57:44: HD(1): DTR is down.

00:57:44: HD(0): New serial state = 0x0600

00:57:44: HD(0): Cable is unplugged.

00:57:44: HD(1): got an interrupt state = 0x805F

00:57:44: HD(1): New serial state = 0x005F

00:57:44: HD(1): DTR is up.

lasvegas#

00:57:53: HD(0): New serial state = 0x0600

00:57:53: HD(0): Cable is unplugged.

00:57:53: HD(1): got an interrupt state = 0x8055

00:57:53: HD(1): New serial state = 0x0055

00:57:53: HD(1): DTR is down.

00:57:53: HD(0): New serial state = 0x0600

00:57:53: HD(0): Cable is unplugged.

00:57:53: HD(1): got an interrupt state = 0x805F

00:57:53: HD(1): New serial state = 0x005F

00:57:53: HD(1): DTR is up.

lasvegas#

00:57:56: Serial1: attempting to restart

00:57:56: HD(1): Deasserting DSR, CTS and DCD

00:57:56: HD(1): Reset from 0x305C488

00:57:56: HD(1): Asserting DSR

00:57:56: HD(1): Asserting DCD and CTS

00:57:56: HD(1): Deasserting LTST

00:57:56: HD(1): Asserting DTR and RTS

Thanks

[deilert]

Can you paste in a sh controllers serial x from both sides

[joeblough]

Note:

The serial connection failed on both serial ports of lasvegas

This is the DCE

lasvegas#sh cont s 0

HD unit 0, idb = 0x1B72D8, driver structure at 0x1BE8B8

buffer size 1524 HD unit 0, V.35 DCE cable, clockrate 64000

cpb = 0xE1, eda = 0x5140, cda = 0x5000

RX ring with 16 entries at 0xE15000

00 bd_ptr=0x5000 pak=0x1C017C ds=0xE18908 status=80 pak_size=0

01 bd_ptr=0x5014 pak=0x1C0448 ds=0xE18FC4 status=80 pak_size=0

02 bd_ptr=0x5028 pak=0x1C0714 ds=0xE19680 status=80 pak_size=0

03 bd_ptr=0x503C pak=0x1C09E0 ds=0xE19D3C status=80 pak_size=0

04 bd_ptr=0x5050 pak=0x1C0CAC ds=0xE1A3F8 status=80 pak_size=0

05 bd_ptr=0x5064 pak=0x1C0F78 ds=0xE1AAB4 status=80 pak_size=0

06 bd_ptr=0x5078 pak=0x1C1244 ds=0xE1B170 status=80 pak_size=0

07 bd_ptr=0x508C pak=0x1C1510 ds=0xE1B82C status=80 pak_size=0

08 bd_ptr=0x50A0 pak=0x1C17DC ds=0xE1BEE8 status=80 pak_size=0

09 bd_ptr=0x50B4 pak=0x1C1AA8 ds=0xE1C5A4 status=80 pak_size=0

10 bd_ptr=0x50C8 pak=0x1C1D74 ds=0xE1CC60 status=80 pak_size=0

11 bd_ptr=0x50DC pak=0x1C2040 ds=0xE1D31C status=80 pak_size=0

12 bd_ptr=0x50F0 pak=0x1C230C ds=0xE1D9D8 status=80 pak_size=0

13 bd_ptr=0x5104 pak=0x1C25D8 ds=0xE1E094 status=80 pak_size=0

14 bd_ptr=0x5118 pak=0x1C28A4 ds=0xE1E750 status=80 pak_size=0

15 bd_ptr=0x512C pak=0x1C2B70 ds=0xE1EE0C status=80 pak_size=0

16 bd_ptr=0x5140 pak=0x1C2E3C ds=0xE1F4C8 status=80 pak_size=0

cpb = 0xE1, eda = 0x5800, cda = 0x5800

TX ring with 1 entries at 0xE15800

00 bd_ptr=0x5800 pak=0x000000 ds=0xE156A4 status=80 pak_size=19

01 bd_ptr=0x5814 pak=0x000000 ds=0xE151E4 status=80 pak_size=19

0 missed datagrams, 0 overruns

0 bad datagram encapsulations, 0 memory errors

0 transmitter underruns

0 residual bit errors

This is the DTE

millvalley#sh cont s 1

HD unit 1, idb = 0x26AFA8, driver structure at 0x24B0B8

buffer size 1524 HD unit 1, V.35 DTE cable

cpb = 0xE3, eda = 0x940, cda = 0x800

RX ring with 16 entries at 0xE30800

00 bd_ptr=0x0800 pak=0x273D40 ds=0xE347C4 status=80 pak_size=0

01 bd_ptr=0x0814 pak=0x274024 ds=0xE34E80 status=80 pak_size=0

02 bd_ptr=0x0828 pak=0x274308 ds=0xE3553C status=80 pak_size=0

03 bd_ptr=0x083C pak=0x2745EC ds=0xE35BF8 status=80 pak_size=0

04 bd_ptr=0x0850 pak=0x2748D0 ds=0xE362B4 status=80 pak_size=0

05 bd_ptr=0x0864 pak=0x274BB4 ds=0xE36970 status=80 pak_size=0

06 bd_ptr=0x0878 pak=0x274E98 ds=0xE3702C status=80 pak_size=0

07 bd_ptr=0x088C pak=0x27517C ds=0xE376E8 status=80 pak_size=0

08 bd_ptr=0x08A0 pak=0x275460 ds=0xE37DA4 status=80 pak_size=0

09 bd_ptr=0x08B4 pak=0x275744 ds=0xE38460 status=80 pak_size=0

10 bd_ptr=0x08C8 pak=0x275A28 ds=0xE38B1C status=80 pak_size=0

11 bd_ptr=0x08DC pak=0x275D0C ds=0xE391D8 status=80 pak_size=0

12 bd_ptr=0x08F0 pak=0x275FF0 ds=0xE39894 status=80 pak_size=0

13 bd_ptr=0x0904 pak=0x2762D4 ds=0xE39F50 status=80 pak_size=0

14 bd_ptr=0x0918 pak=0x2765B8 ds=0xE3A60C status=80 pak_size=0

15 bd_ptr=0x092C pak=0x27689C ds=0xE3ACC8 status=80 pak_size=0

16 bd_ptr=0x0940 pak=0x276B80 ds=0xE3B384 status=80 pak_size=0

cpb = 0xE3, eda = 0x1000, cda = 0x1000

TX ring with 1 entries at 0xE31000

00 bd_ptr=0x1000 pak=0x000000 ds=0x000000 status=80 pak_size=0

01 bd_ptr=0x1014 pak=0x000000 ds=0x000000 status=80 pak_size=0

0 missed datagrams, 0 overruns

0 bad datagram encapsulations, 0 memory errors

0 transmitter underruns

0 residual bit errors