From: MADMAN (dmadlan@qwest.com)
Date: Thu Apr 08 2004 - 15:06:59 GMT-3
Remeber the good old "clock source blah" command? Just stumbled into
this, if your running a 1751/1760 with a voice image there is no clock
source command, Cisco has SIMPLIFIED things!?!?!?!
this is from
http://www.cisco.com/en/US/partner/products/hw/routers/ps221/prod_configuration_guide09186a008007cf5f.html
tdm clock Configuration
The following conditions must be met before configuring TDM clock:
* BRI interfaces should be shut down before using the no tdm clock
command for BRI.
* The configuration for a ds0/pri/channel/tdm group on a T1/E1 must
be removed before deleting the TDM clock configuration for T1/E1.
* Any residual or default TDM clock configuration must be deleted
before creating a new TDM clock configuration.
* If an export port is configured, the line protocol must be up
before configuring any import ports.
* On a Cisco 1751 or Cisco 1760 router, if one port is configured
as export, all other ports must be configured as imports.
* An export port clock can be turned off only after all the import
ports (including BRI-auto ports) are turned off.
* The configured TDM clock and the status of the running TDM clock
might be different, depending on the line conditions and connections.
tdm clock Command
The tdm clock global configuration command configures the clock source
for the T1 VWIC, E1 VWIC, BRI VIC, ADSL, and G.SHDSL WICs. The complete
syntax for various clock scenarios is shown in this section.
Exporting Clock
The following shows the command for exporting the clock.
tdm clock {T1 | E1} <slot/port> {voice | data | both} export line
tdm clock {atm | bri} <slot/port> export
Importing Clock
The following shows the command for importing the clock.
tdm clock {T1 | E1} <slot/port> {voice | data | both} import {T1 | E1 |
atm | bri |
onboard} <slot/port> {line | internal}
tdm clock {atm | bri} <slot/port> import {T1 | E1 | atm | bri | onboard}
<slot/port>
TDM Clock Auto Selection for BRI
The following command sets the TDM clock auto selection for BRI only.
tdm clock bri-auto
-- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367"Emotion should reflect reason not guide it"
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