Juniper EX-Series – How to Transfer Config Between Switches

negotiation of the control-word between the BGP VPLS PE routers is added in Juniper MX series starting from Junos 14.1. so only BGP-signaled VPLS.

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There might be some helpful information for you at the Juniper Knowledge Center.

If RPD is consuming high CPU, then perform the following checks and verify the following parameters:

• Check the interfaces: Check if any interfaces are flapping on the router. This can be verified by looking at the output of the show log messages and show interfaces ge-x/y/z extensive commands. Troubleshoot why they are flapping; if possible you can consider enabling the hold-time for link up and link down.

• Check if there are syslog error messages related to interfaces or any FPC/PIC, by looking at the output of show log messages.

• Check the routes: Verify the total number of routes that are learned by the router by looking at the output of show route summary. Check if it has reached the maximum limit.

• Check the RPD tasks: Identify what is keeping the process busy. This can be checked by first enabling set task accounting on. Important: This itself might increase the load on CPU and its utilization; so do not forget to turn it off when you are done with the required output collection. Then run show task accounting and look for the thread with the high CPU time:

  user@router> show task accounting
  Task                       Started    User Time  System Time  Longest Run
  Scheduler                   146051        1.085        0.090        0.000
  Memory                           1        0.000            0        0.000  <omit>
  BGP.128.0.0.4+179              268       13.975        0.087        0.328
  BGP.0.0.0.0+179      18375163 1w5d 23:16:57.823    48:52.877        0.142
  BGP RT Background              134        8.826        0.023        0.099
  

Find out why a thread, which is related to a particular prefix or a protocol, is taking high CPU.

• You can also verify if routes are oscillating (or route churns) by looking at the output of the shell command: %rtsockmon –t

• Check RPD Memory. Some times High memory utilization might indirectly lead to high CPU.