Solved

F/R Circuits possible clocking issue?

Posted on 2003-10-21
3
369 Views
Last Modified: 2008-02-26
I have a Cisco 4700 that is feeding F/R (yes F/R Switching is activated) to a remote router (Cisco 1601 w/WIC-T1-DSU). On the 4700 side we are using an Adtran Smart16e Shelf w/ V.35 TSU cards. The 4700 is set to FRAME-RELAY INTF-TYPE DCE and that is required to bring the connection up. I have the local end (Adtran) set to CLOCK SOURCE NETWORK and DTE TX CLOCK INT-INV. The 1601 is set to CLOCK SOURCE LINE. This is our own infrastructure of copper so there is no Qwest involved to provide the clocking on the circuit. The circuit contains to go up and down many times a day. This configuration seems to be working with other circuits but I am not sure on whether or not the clocking is set up right. How do I set up either the Adtran or the 1601 to be the master clock source? Or...how do I insert a clock source to the network? Do I need to use the CLOCK RATE command on both ends? FYI...Cisco TAC has cleared the configs on both sides as "working". I know it's a clocking issue but not sure where to start.
0
Comment
Question by:V2POWR
3 Comments
 
LVL 7

Expert Comment

by:NicBrey
ID: 9591574
Hi there.
On your router that is providing the clocking (F/R switch), you need the "clock rate <rate>"  command.

http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a0080094a3c.shtml
0
 
LVL 8

Accepted Solution

by:
scraig84 earned 250 total points
ID: 9591981
>>Originally posted by NicBrey
>Hi there.
>On your router that is providing the clocking (F/R switch), you need the "clock rate <rate>"  command.

That's only true if you don't have a CSU/DSU in the mix and is not an absolute.  The main issue here is that SOMETHING has to be providing clock.  I would set up the Adtran to use it's own clock (hence provide clocking for all other devices).  The 4700 being serial will expect clocking to come from it's CSU/DSU and the 1601 is already expecting from the line as well.  Therefore, if you switch the Adtran to provide clock, you don't have to make any other changes.  If you were to follow NicBrey's advice, you'd have to change it as well to get clocking from the 4700.  I think changing the Adtran is your quickest and cleanest solution.
0
 
LVL 17

Expert Comment

by:John Gates
ID: 9617746
Setting the clock to internal is the way to go.


D
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Unable to RDP to windows 10 pro machine 15 75
PCI Compliance Free scan 2 78
How DHCP Works in Wired/Wireless network 21 89
Network access 4 22
#Citrix #Citrix Netscaler #HTTP Compression #Load Balance
ADCs have gained traction within the last decade, largely due to increased demand for legacy load balancing appliances to handle more advanced application delivery requirements and improve application performance.
Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.
In this tutorial you'll learn about bandwidth monitoring with flows and packet sniffing with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're interested in additional methods for monitoring bandwidt…

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

14 Experts available now in Live!

Get 1:1 Help Now