|
Thank you Scott for that explanation. I don't know why it's running faster now though. Rob Berendt -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." Benjamin Franklin Scott Klement <klemscot@xxxxxxxxxxxx> Sent by: midrange-l-bounces@xxxxxxxxxxxx 09/26/2003 03:02 PM Please respond to Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx> To Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx> cc Subject Re: ping taking a LONG time It sounds like it's waiting for the reverse DNS lookup to time-out. For whatever reason, the iSeries PING will first do a "forward DNS lookup" to get the IP address of the host you want to send the ping to, and then it does a reverse lookup on that address to get back the name. For example, let's say I have an iSeries called "bigbertha.example.com" and I have "iSeries.example.com" set up as an alias for that. If I type: ping iseries.example.com it sends back a messae like this: Verifying connection to host system BIGBERTHA.EXAMPLE.COM at address 192.168.0.1. How did it know that "iseries.example.com" was also called "bigbertha"? Because it first got the address, then did a reverse-lookup on that address to get the "canonical" hostname. Okay, now that I've explained all of that... your problem sounds like the reverse DNS is waiting to time-out. On FreeBSD I can specify an option to tell it not to do DNS (which is useful in networks that don't have a DNS server) but the iSeries doesn't appear to have this feature. On Fri, 26 Sep 2003 rob@xxxxxxxxx wrote: > In my dmz if I do a > ping myother400 > it takes forever for it to return any information, like a minute or so. > Once it does it claims that all tries were sub millisecond. > But if I do a ping xxx.xxx.xxx.xxx in which xxx... is the ip address of > the other 400 it works as usual. > > I checked CFGTCP-12-Change TCP/IP domain information to see if it search > local hosts table first or the 3 external DNS' set up. It does use > Host name search priority . . . *LOCAL > and there is a host table entry for myother400. > > Any idea's where the hold up might be? > _______________________________________________ This is the Midrange Systems Technical Discussion (MIDRANGE-L) mailing list To post a message email: MIDRANGE-L@xxxxxxxxxxxx To subscribe, unsubscribe, or change list options, visit: http://lists.midrange.com/mailman/listinfo/midrange-l or email: MIDRANGE-L-request@xxxxxxxxxxxx Before posting, please take a moment to review the archives at http://archive.midrange.com/midrange-l.
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.