Explanation accepted, Dave !
And I should know it - because I am one of those (admins) :-)
I always use the $TTL 86400 (default) in our z/OS BIND9-
implementations ....
ciao Lutz
-------------------------------------------------------------------------
Lutz Hamann
BETA Systems Software AG
z/OS System Engineering
-------------------------------------------------------------------------
Dave Jones
<[EMAIL PROTECTED]
are.com> To
Sent by: Linux on [email protected]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: IP weirdness
08.08.2005 14:32
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
You're welcome, Lutz.
There was a discussion over the weekend on the VM-ESA list about why it
takes so long for DNS updates to propagate. It has to do with the TTL
(time to live) values set by various DNS administrators.
Have a good week.
DJ
Lutz Hamann wrote:
> Thank you, Dave ...
>
> I could never imagine that those DNS-updates take more than
> 2 days :-) But let's wait ...
>
> But at least I can acces the site via their IP-address.
>
>
> ciao Lutz
>
>
> -------------------------------------------------------------------------
> Lutz Hamann
> BETA Systems Software AG
> z/OS System Engineering
> -------------------------------------------------------------------------
>
>
>
> Dave Jones
> <[EMAIL PROTECTED]
> are.com>
To
> Sent by: Linux on [email protected]
> 390 Port
cc
> <[EMAIL PROTECTED]
> IST.EDU>
Subject
> Re: IP weirdness
>
> 08.08.2005 14:12
>
>
> Please respond to
> Linux on 390 Port
> <[EMAIL PROTECTED]
> IST.EDU>
>
>
>
>
>
>
> Hi, Lutz.
>
> www.vm.ibm.com has moved from 204.146.134.198 to 204.146.134.18.
>
> DNS updates are working their way through the Internet, so it's not just
> a German/European problem.
>
>
> DJ
>
> Lutz Hamann wrote:
>
>>Thank you for your explanation and the URL, Vic.
>>
>>I'd like to check it - if www.vm.ibm.com goes online again :-)
>>It seems to be off-line since last Friday or Saturday :-(
>>
>>Does anybody know the reason - or is it only specific German/European
>>problem ?
>>
>>
>> ciao Lutz
>>
>>-------------------------------------------------------------------------
>>Lutz Hamann
>>BETA Systems Software AG
>>z/OS System Engineering
>>-------------------------------------------------------------------------
>>
>>
>>
>> Vic Cross
>> <[EMAIL PROTECTED]
>> au>
>
> To
>
>> Sent by: Linux on [email protected]
>> 390 Port
>
> cc
>
>> <[EMAIL PROTECTED]
>> IST.EDU>
>
> Subject
>
>> Re: IP weirdness
>>
>> 06.08.2005 16:24
>>
>>
>> Please respond to
>> Linux on 390 Port
>> <[EMAIL PROTECTED]
>> IST.EDU>
>>
>>
>>
>>
>>
>>
>>On Saturday 06 August 2005 04:38, Neale Ferguson wrote:
>>NF> I have a guest LAN that connects a number of guests.
>><snip>
>>NF> All but one of the guests can talk to each other, except one
>>NF> (I'll call X) which can only talk to the default gateway. If I ping
>
> the
>
>>NF> others from X I get no response. The same goes when I go from the any
>>NF> other of the guests except R to X.
>><snip>
>>NF> We are z/VM 4.4 0404. Guest X is SLES9 SP2, Guest R is SLES7, other
>>NF> guests are Debian.
>>
>>There are a few VMLAN fixes out since 0404RSU. From recent experience
>
> I'd
>
>>suggest you get right up to date and try again (the qeth driver on the
>>guests
>>other than X might need an update as well, although it strikes me as odd
>>that
>>the SLES 7 system works talking to the SLES 9 SP2 given that its qeth is
>>probably older than the Debians'...).
>>
>>The z/VM team maintains an excellent resource that talks about (among
>
> other
>
>>things) z/VM maintenance levels in support of virtual networking:
>>
>> http://www.vm.ibm.com/virtualnetwork
>>
>>Look for the "Virtual Switch and Guest LAN CP Maintenance levels" link.
>>
>>NF> The other weirdness I see is that all the guests have a subnet mask
>
> of
>
>>NF> 255.255.255.192 but Q LAN DETAILS reports everyone as 255.255.255.0.
>>
>>No need to be concerned about this. At earlier levels the display shows
>>the
>>natural network mask (i.e. as if you weren't subnetting) instead of the
>>actual subnet mask in use. On z/VM 5.1 the subnet mask display is
>
> removed
>
>>(replaced by the MAC address, like the multicast display).
>>
>>Cheers,
>>Vic Cross
>>
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