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Today's Topics:
1. Re: Failover Peer Issue with Polycom SoundStation IP 6000
Phone (willieb)
2. Re: Failover Peer Issue with Polycom SoundStation IP 6000
Phone (glenn.satch...@uniq.com.au)
----------------------------------------------------------------------
Message: 1
Date: Wed, 18 Nov 2020 12:45:08 -0600 (CST)
From: willieb <will.bash...@btctelcom.net>
To: dhcp-users@lists.isc.org
Subject: Re: Failover Peer Issue with Polycom SoundStation IP 6000
Phone
Message-ID: <1605725108811-0.p...@n4.nabble.com>
Content-Type: text/plain; charset=us-ascii
>> substring(hardware, 1, 4 = 1:aa:bb:cc)
I'm not sure who owned the lease, but I do believe the class solution will
be a nice workaround. I have 2 questions at the moment:
1.) Regarding the substring statement above, what is the difference in using
"1, 4" or "1, 3"?
2.) The first 6 digits of the mac address (OUI) is the same for all of our
Polycom phones, but it appears the SoundStations we have all use 34 as the
next 2 mac digits. So can we specify 8 digits instead of 6 digits for
matching?
Thanks.
--
Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/
------------------------------
Message: 2
Date: Thu, 19 Nov 2020 08:30:46 +1100
From: glenn.satch...@uniq.com.au
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Failover Peer Issue with Polycom SoundStation IP 6000
Phone
Message-ID: <1a54f499df35d63f280d338bb2287...@uniq.com.au>
Content-Type: text/plain; charset=US-ASCII; format=flowed
So from the dhcp-eval man page the arguments to substring() are
substring (data-expr, offset, length)
Note that the parameter hardware() is one byte for the network type (1
for ethernet, but others include token ring, etc) prefixed to the MAC
address. So for a device that has the mac address aa:bb:cc:dd:ee:ff,
hardware() will return 01:aa:bb:cc:dd:ee:ff
The hardware string represents 7 bytes of data with each byte (or octet)
being represented by two hexadecimal characters separated by a colon.
So for Q1, the last parameter is the length of the string to match.
And for Q2 matching on the first 4 bytes of the mac seems like the way
to go, eg: if hardware() is as above then we want to match 1:aa:bb:cc:34
which is a length of 5.
substring(hardware, 1, 5 = 1:aa:bb:cc:34)
or to ignore the network type, perhaps start at the second byte
substring(hardware, 2, 4 = aa:bb:cc:34)
Hope this helps.
regards,
Glenn
On 2020-11-19 05:45, willieb wrote:
>>> substring(hardware, 1, 4 = 1:aa:bb:cc)
>
> I'm not sure who owned the lease, but I do believe the class solution
> will
> be a nice workaround. I have 2 questions at the moment:
>
> 1.) Regarding the substring statement above, what is the difference in
> using
> "1, 4" or "1, 3"?
>
> 2.) The first 6 digits of the mac address (OUI) is the same for all of
> our
> Polycom phones, but it appears the SoundStations we have all use 34 as
> the
> next 2 mac digits. So can we specify 8 digits instead of 6 digits for
> matching?
>
> Thanks.
>
>
>
> --
> Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/
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