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Adding a static route to an ESX host for an extra service console

Symptoms

  • Packet loss when using two service consoles
  • Intermittent packet loss with two service consoles
  • IP requests arrive at second service console IP but do not return because there is only one configurable gateway for service consoles

Resolution

You must add a static route so that traffic responds from the correct service console interface.
 
Note:  In the following commands:
  • 142.121.56.0/23 is the remote IP trying to communicate with the second service console.
  • 224.58.175.75 is the second service consoles IP.
  • 224.58.175.1 is the Gateway IP for the second service console.
Configure the route using the command:
route add -net 142.121.56.0 netmask 255.255.254.0 gw 224.58.175.1  
Add the following line to /etc/rc.local so that route is set on boot:

/sbin/route add -net 142.121.56.0 netmask 255.255.254.0 gw 224.58.175.1  
If route does not hold on reboot, create an executable file.
 
To create an executable file:
  1. cd to the directory /etc/init.d.
  2. Create a file called routes with the command:

    vi routes
  3. Make the file executable with the command:

    chmod 777     routes

  4. Add the following code to the file:

    ##! /bin/bash # case "$1" in 'start') echo  "Adding additional routes... "

    /sbin/route add -net 172.31.3.0 netmask 255.255.255.0 gw 172.31.8.1 echo ;; *) echo "Usage: $0 { start }" ;; esac

  5. Save and exit out of VMware Infrastructure Client.

  6. cd to the directory /etc/rc3.d.

  7. Create a symbolic link to that file, then reboot.

Additional Information

For more information, see How do I configure static routes in Red Hat Enterprise Linux version 3? in the Red Hat Knowledge Base.  
Note: The preceding link was correct as of July 29, 2009. If you find the link is broken, provide feedback and a VMware employee will update the link.
 

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Actions
  • KB Article: 1005212
  • Updated: Aug 20, 2009
  • Products:
    VMware ESX