How to find clock rate

Lets say your isp CIR is 56k. What command can you run on the dte to make sure that they set the clockrate to 56k?

I use "show int s0" and the bandwidth is showing 1544 but I know my frame cloud is set at 56k.

Thanks

Find more posts tagged with

SAVE $250 on Your CISCO Boot Camp — Use Code "EXAM26"

Exclusively for TechExams members for Infosec Boot Camps starting before April 30, 2026

View CISCO Boot Camps

Comments

billscott92787

Dilbert65 wrote: »

Lets say your isp CIR is 56k. What command can you run on the dte to make sure that they set the clockrate to 56k?

I use "show int s0" and the bandwidth is showing 1544 but I know my frame cloud is set at 56k.

Thanks

The bandwidth command doesn't mean that you are "officially" transmitting 1.544 Mbps over that link into the cloud. The rate in that case would be controlled by the provider, and would be throttled once it got to the cloud. The bandwidth command is used more for reference for routing protocols such as EIGRP and OSPF when computing the metrics. You could set your bandwidth to match the clock rate of the frame, which would change your metrics in your routing table. But, the ISP controls the clocking process since they have ownership over the DCE device.

mikej412

show controllers serial 0

Dilbert65

I understand that the provider sets the clock rate but I want to know if there is a command to see what clock rate they are tranmitting to me.

If I do "show controllers s 0" I get

R1#show control ser 0
HD unit 0, idb = 0x12797C, driver structure at 0x12DD08
buffer size 1524 HD unit 0, V.35 DTE cable
cpb = 0xE2, eda = 0x4140, cda = 0x4000
RX ring with 16 entries at 0xE24000
00 bd_ptr=0x4000 pak=0x12EFA4 ds=0xE27908 status=80 pak_size=0
01 bd_ptr=0x4014 pak=0x12F44C ds=0xE28680 status=80 pak_size=0
02 bd_ptr=0x4028 pak=0x12F6A0 ds=0xE28D3C status=80 pak_size=0
03 bd_ptr=0x403C pak=0x12F8F4 ds=0xE293F8 status=80 pak_size=0
04 bd_ptr=0x4050 pak=0x12FB48 ds=0xE29AB4 status=80 pak_size=0
05 bd_ptr=0x4064 pak=0x12FD9C ds=0xE2A170 status=80 pak_size=0
06 bd_ptr=0x4078 pak=0x12FFF0 ds=0xE2A82C status=80 pak_size=0
07 bd_ptr=0x408C pak=0x130244 ds=0xE2AEE8 status=80 pak_size=0
08 bd_ptr=0x40A0 pak=0x130498 ds=0xE2B5A4 status=80 pak_size=0
09 bd_ptr=0x40B4 pak=0x1306EC ds=0xE2BC60 status=80 pak_size=0
10 bd_ptr=0x40C8 pak=0x130940 ds=0xE2C31C status=80 pak_size=0
11 bd_ptr=0x40DC pak=0x130B94 ds=0xE2C9D8 status=80 pak_size=0
12 bd_ptr=0x40F0 pak=0x130DE8 ds=0xE2D094 status=80 pak_size=0
13 bd_ptr=0x4104 pak=0x13103C ds=0xE2D750 status=80 pak_size=0
14 bd_ptr=0x4118 pak=0x131290 ds=0xE2DE0C status=80 pak_size=0
15 bd_ptr=0x412C pak=0x1314E4 ds=0xE2E4C8 status=80 pak_size=0
16 bd_ptr=0x4140 pak=0x131738 ds=0xE2EB84 status=80 pak_size=0
cpb = 0xE2, eda = 0x4800, cda = 0x4800
TX ring with 1 entries at 0xE24800
00 bd_ptr=0x4800 pak=0x000000 ds=0x000000 status=80 pak_size=0
01 bd_ptr=0x4814 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

which does not say 56k.

mikej412

Well, you can try the show service-module command next or actually tell us what kind of hardware/port you're using.

Dilbert65

I have a 2620xm with 4 serail port module.
Frame Setup

interface Serial1/1
no ip address
encapsulation frame-relay
logging event subif-link-status
logging event dlci-status-change
clock rate 56000
no frame-relay inverse-arp
frame-relay intf-type dce
frame-relay route 122 interface Serial1/2 221
frame-relay route 123 interface Serial1/3 321

the clients is a 2501 with ios 12.1 and a 2611xm with IOS 12.2.

I thought maybe there was a simple command to se what the clock rate on the dce had been set to from the dte router command line

The "show service-module" command does not work on any of my equipment. If I do a "show s?" the only command is sessions.

thanks for feedback