Is anyone of you running a Cisco with X.21 or V.35 interface in master mode (the Cisco is supplying the clocking on the line). Normally the modem (DCE) supplies the line clock to the Cisco.
I'm interested in (production) cases where you had to supply the clock from the cisco to the other side.
On Thu, 1 Sep 2005, Andre Oppermann wrote:
Is anyone of you running a Cisco with X.21 or V.35 interface in master mode (the Cisco is supplying the clocking on the line). Normally the modem (DCE) supplies the line clock to the Cisco.
I'm interested in (production) cases where you had to supply the clock from the cisco to the other side.
Yes we've used such back2back configurations for a long time with V.35 and X.21. The availble clockrates depend on the type of cisco-gear and serial-interface adapter you're using (not all clockrates shown with a 'config-if# clockrate ?' in cli are always possible !)
-Patrick
On 01.09.2005 19:47 Andre Oppermann wrote
Is anyone of you running a Cisco with X.21 or V.35 interface in master mode (the Cisco is supplying the clocking on the line). Normally the modem (DCE) supplies the line clock to the Cisco.
I'm interested in (production) cases where you had to supply the clock from the cisco to the other side.
I had to that 15 years ago when connecting an AGS back-to-back to a Datus X.25 switch.
Arnold
Hello Andre
Yes, we had such a setup for quite a long time for connecting two routers back-to-back without a "leasedline" with serial-interfaces. It was somehow more a case of 'we have the interfaces already so why should be buy some new ethernetinterfaces when the cables cost not even 10% of the interface-price' than a 'there is no other way to do it' case tough.
But IMO such setups are more a lab-thing than real-live stuff in nowadays.
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Andre Oppermann -
Arnold Nipper -
Fredy Kuenzler -
Patrick.Guelat＠imp.ch -
Roman Hochuli