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Today's Topics:

   1. Failover Peer Issue with Polycom SoundStation IP 6000 Phone
      (Will Bashlor)
   2. Re: GUI for ISC dhcp (willieb)
   3. Re: Failover Peer Issue with Polycom SoundStation IP 6000
      Phone (Simon Hobson)
   4. RE: GUI for ISC dhcp (Ahiya Zadok)
   5. Re: GUI for ISC dhcp (Peter Yardley)


----------------------------------------------------------------------

Message: 1
Date: Wed, 11 Nov 2020 13:50:44 -0500
From: Will Bashlor <will.bash...@btctelcom.net>
To: dhcp-users@lists.isc.org
Subject: Failover Peer Issue with Polycom SoundStation IP 6000 Phone
Message-ID:
        <CAJPhU+ZYX=9jfsxgwojlteshe0vye4hn8wkujxolcwktgw5...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hello list,

Hopefully someone can help me. I'm on CentOS using ISC dhcp version 4.2.5.

We have many Polycom phones, but only 1 model in particular is having
issues obtaining an IP address from our ISC DHCP server. I see all 4 DORA
DHCP packets, but the request and ack keeps repeating and the phone doesn't
get an IP and says "Error DHCP Failed" after about 1 minute. After that it
may take 1 hour, or maybe 30 minutes to actually get the IP. All other
Polycom models are working fine and obtain an IP in a few seconds.

If I stop the secondary failover server's DHCP service, then the phone I'm
having an issue with gets an IP immediately. See dhcpd.conf below. I've
also tried clearing the secondary database also to no avail. Please advise.
Thank you.

Primary server config:

failover peer "failover-dhcp" {
  primary; # This defines the master
  address a.a.14.34;
  port 847;
  peer address a.a.15.34;
  peer port 647;
  max-response-delay 60;
  max-unacked-updates 10;
  mclt 3600;
  split 255; # 128 is balanced; use 255 if primary is 100% responsible
until failure
  load balance max seconds 3;
}

allow unknown-clients;
ping-check on;
ping-check true;

option dhcp-server-identifier a.a.14.34;
option domain-name "btconline.net";
option domain-name-servers a.a.14.35, a.a.15.35;
option ntp-servers a.a.14.36, a.a.15.36;
option time-servers a.a.14.36, a.a.15.36;
option time-offset -18000;
option option-125 code 125 = string;

default-lease-time 86400;
max-lease-time 86400;

ddns-update-style none;

authoritative;

log-facility local4;

subnet a.a.14.0 netmask 255.255.255.192 {
}

shared-network "HPBX" {
        subnet b.b.0.0 netmask 255.255.240.0 {
                option routers b.b.0.1;
                option subnet-mask 255.255.240.0;
                option broadcast-address b.b.15.255;
                option tftp-server-name "
https://meta-portal.btconline.net/sip-ps";;
                default-lease-time 604800;
                max-lease-time 604800;
                pool {
                        failover peer "failover-dhcp";
                        range b.b.0.101 b.b.15.254;
                        deny dynamic bootp clients;
                }
        }
}

shared-network "HPBX_MGMT" {
        subnet c.c.0.0 netmask 255.255.240.0 {
                option routers c.c.0.1;
                option subnet-mask 255.255.240.0;
                option broadcast-address c.c.15.255;
                option tftp-server-name "a.a.14.34";
                option bootfile-name "startup-config.350";
                send option-125
00:00:00:09:0B:05:09:43:49:30:33:32:2e:30:30:50;
                default-lease-time 15552000;
                max-lease-time 15552000;
                pool {
                        range c.c.0.101 c.c.15.254;
                        deny dynamic bootp clients;
                }
        }
}

Secondary server config:

failover peer "failover-dhcp" {
  secondary; # This defines the slave
  address a.a.15.34;
  port 647;
  peer address a.a.14.34;
  peer port 847;
  max-response-delay 60;
  max-unacked-updates 10;
  load balance max seconds 3;
}

allow unknown-clients;
ping-check on;
ping-check true;

option dhcp-server-identifier a.a.15.34;
option domain-name "btconline.net";
option domain-name-servers a.a.14.35, a.a.15.35;
option ntp-servers a.a.14.36, a.a.15.36;
option time-servers a.a.14.36, a.a.15.36;
option time-offset -18000;
option option-125 code 125 = string;

default-lease-time 86400;
max-lease-time 86400;

ddns-update-style none;

authoritative;

log-facility local4;

subnet a.a.15.0 netmask 255.255.255.192 {
}

shared-network "HPBX" {
        subnet b.b.0.0 netmask 255.255.240.0 {
                option routers b.b.0.1;
                option subnet-mask 255.255.240.0;
                option broadcast-address b.b.15.255;
                option tftp-server-name "
https://meta-portal.btconline.net/sip-ps";;
                default-lease-time 604800;
                max-lease-time 604800;
                pool {
                        failover peer "failover-dhcp";
                        range b.b.0.101 b.b.15.254;
                        deny dynamic bootp clients;
                }
        }
}
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Message: 2
Date: Wed, 11 Nov 2020 14:48:03 -0600 (CST)
From: willieb <will.bash...@btctelcom.net>
To: dhcp-users@lists.isc.org
Subject: Re: GUI for ISC dhcp
Message-ID: <1605127683630-0.p...@n4.nabble.com>
Content-Type: text/plain; charset=us-ascii

Not sure about anything other than Webmin, but for an IPAM alternative check
out Gestio.

Will



--
Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/


------------------------------

Message: 3
Date: Wed, 11 Nov 2020 22:19:32 +0000
From: Simon Hobson <dh...@thehobsons.co.uk>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Failover Peer Issue with Polycom SoundStation IP 6000
        Phone
Message-ID: <c8800960-8699-4627-ae91-13b78ac50...@thehobsons.co.uk>
Content-Type: text/plain; charset=us-ascii

Will Bashlor <will.bash...@btctelcom.net> wrote:

> Hopefully someone can help me. I'm on CentOS using ISC dhcp version 4.2.5.
> 
> We have many Polycom phones, but only 1 model in particular is having issues 
> obtaining an IP address from our ISC DHCP server. I see all 4 DORA DHCP 
> packets, but the request and ack keeps repeating and the phone doesn't get an 
> IP and says "Error DHCP Failed" after about 1 minute. After that it may take 
> 1 hour, or maybe 30 minutes to actually get the IP. All other Polycom models 
> are working fine and obtain an IP in a few seconds.
> 
> If I stop the secondary failover server's DHCP service, then the phone I'm 
> having an issue with gets an IP immediately.

I think the best step to take is to collect traffic dumps in the two cases - 
pcap, wireshark, ...
You can then inspect the packets to see if there is anything different between 
them.

When you stop the peer, do you put the remaining server into partner down state 
?
Two things come to mind, one is a difference in lease times, the other is that 
the phone doesn't like getting multiple responses (shouldn't be a problem, it's 
part of the spec).

Simon



------------------------------

Message: 4
Date: Thu, 12 Nov 2020 07:08:22 +0200
From: Ahiya Zadok <ah...@younity.io>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: RE: GUI for ISC dhcp
Message-ID: <0801acfc9029d440c54900a5d9486...@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"

Thanks, Will

Does it support DHCP?
I don't see anything regarding DHCP in the docs.

-----Original Message-----
From: dhcp-users <dhcp-users-boun...@lists.isc.org> On Behalf Of willieb
Sent: Wednesday, November 11, 2020 10:48 PM
To: dhcp-users@lists.isc.org
Subject: Re: GUI for ISC dhcp

Not sure about anything other than Webmin, but for an IPAM alternative
check out Gestio.

Will



--
Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/
_______________________________________________
ISC funds the development of this software with paid support
subscriptions. Contact us at https://www.isc.org/contact/ for more
information.

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------------------------------

Message: 5
Date: Thu, 12 Nov 2020 05:28:53 +0000
From: Peter Yardley <peter.yard...@uts.edu.au>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: GUI for ISC dhcp
Message-ID: <1570c548-d871-47a5-80d0-a55b6bebd...@uts.edu.au>
Content-Type: text/plain; charset="utf-8"

Hi,

We use NameSurfer which is a low cost commercial offering, but the best is 
Infoblox (which costs a lot more).

> On 5 Nov 2020, at 7:42 pm, ahiya <ah...@younity.io> wrote:
> 
> hi
> 
> could anyone recommend a lite weight GUI for managing ISC?
> for monitoring and configuration tasks:
> - add/remove/modify subnets/pools
> -add/remove a reservation
> - monitor HA
> - subnets stats
> 
> I've tried Webmin but when changing config with an error ends with service
> down without even notify of a config error.
> 
> 
> on the other hand, if you know of a heavy-duty tool that could manage
> several servers from AWS
> it's even better. 
> 
> ive tried some IPAM tools (men&mice) but the issue is that my distributed
> DHCP servers contain duplicate ip pools (different sites) and the ipam
> couldn't handle that
> 
> 
> ill appreciate any advice.
> 
> thanks 
> 
> 
> 
> 
> --
> Sent from: http://isc-dhcp-users.2343191.n4.nabble.com/
> _______________________________________________
> ISC funds the development of this software with paid support subscriptions. 
> Contact us at https://www.isc.org/contact/ for more information.
> 
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users

._--_|\   Peter Yardley                    |
/      \  Senior Network Engineer          | peter.yard...@uts.edu.au
\_.--._*  Information Technology Division, | Ph:  +61 2 9514-2358
.     v   University of Technology, Sydney.| Fax: +61 2 9514-4327

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