On 2/8/07, Tom Lobato <tomlobato@xxxxxxxxx> wrote:
Thank you for the script. I'm trying it. Well, I made a simple modification and would like to hear opnions. Until now, I just added one more TESTIP, so I'm pinging one IP for each link. Also I'm using the IP instead name address, and used the DNS IP of each provider for the ping. I made this because the ping to external sites (yahoo, google) is too slow here, mainly when the link is under heavy load. So I'm afraid it can try ping without success and "think" the link is down.
I just used a popular external site because it may happen that connectivity from your location to the provider's DNS is there but the provider's link with the rest of the internet is down so even if you get a successful ping reply, the link isn't working in the real sense. Also, I preferred using a name instead of IP address because there could be multiple IP addresses associated with the site name and they can change too. But I don't see anything wrong in your approach. What do you mean by slow ? I don't think ping reply time should be an issue. We are more concerned with the success. Obviously, it should not time out. The ping reply times I get here for sites like www.yahoo.com and www.google.com are to the tune of 300 ms. You can increase the pin
Also, for don't get falses 'link down', did you tried to increase the number of 4 ping fails before replace the route? What do you think about?
4 successful ping fails means that the link has been down for anywhere between 40-50 seconds which I think was a sufficient time interval to carry a failover. But you can increase it depending upon your requirements. For restoring the link, the script doesn't wait for that much time.
PS: although alteration be so simple, if someone want to see, tell me and I send a mail. Tom Lobato
It would be great to see your final script. -- Manish Kathuria Tux Technologies http://www.tuxtechnologies.co.in/ _______________________________________________ LARTC mailing list LARTC@xxxxxxxxxxxxxxx http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc
