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Today's Topics:
1. Re: Reg: dhcp service unresponsive frequently (Purva Rawan)
----------------------------------------------------------------------
Message: 1
Date: Fri, 24 Jan 2020 12:44:27 +0530 (IST)
From: Purva Rawan <pur...@cdac.in>
To: Bill Shirley <b...@c3po.polymerindustries.biz>, Users of ISC DHCP
<dhcp-users@lists.isc.org>
Subject: Re: Reg: dhcp service unresponsive frequently
Message-ID:
<1718882419.3238.1579850067357.javamail.open-xcha...@webmail.cdac.in>
Content-Type: text/plain; charset="utf-8"
We have not configured dhcp relay agent in both dhcp server's configuration .
In one of the server ,dhcp service listening on each interfaces.
For another dhcp server ,dhcp relay agent is serving through Layer 3 switch.
But we are facing this issue for both the servers.
Regards,
Purva
On January 23, 2020 at 8:52 AM Bill Shirley <b...@c3po.polymerindustries.biz>
wrote:
>
> I stumbled upon your reply in my INBOX which I seldom check for this email
> account. I don't
> know which email client you're using but for Thunderbird you should use
> "Reply List".
>
> Your tcpdump of the traffic for the working client is on the same subnet as
> your DHCP server:
>
> 10.208.39.250.bootpc > 10.208.38.1.bootps
>
>
> However, the two non-working clients appear to be off-subnet:
>
> 10.208.8.1.bootps > 10.208.0.27.bootps 10.208.16.1.bootps >
> 10.208.0.27.bootps
>
> Are you using relays? What IP addresses does your DHCP server have?
> ip -o -4 addr
>
> Bill
>
> On 1/20/2020 7:01 PM, Bill Shirley wrote:
>
> > >
> > Run a tcpdump on the network interface looking for DHCP traffic. Are
> > there any responses?
> > # IPv4
> > tcpdump -vv -e -n -i lan10 'portrange 67-68'
> > # IPv6
> > tcpdump -X -l -vv -e -n -i wifi 'portrange 546-547'
> >
> > Who is handling your logging? systemd-journald? rsyslogd?
> >
> > Bill
> >
> > On 1/20/2020 12:17 AM, Purva Rawan wrote:
> >
> > > > >
> > > Hi,
> > >
> > > We are using ISC-DHCP version is 4.1.1 on centos 6.4 .DHCP
> > > service started becoming unresponsive once every week . The server itself
> > > is up and running, but the DHCP service was unresponsive.We restarted the
> > > service. But after few days dhcp service stopped working. No entries were
> > > written to the dhcp log, and there was nothing helpful in any event log.We
> > > observed that Load on server ,CPU utilization ,HDD utilization,network
> > > traffic are normal during service get freeze.
> > >
> > > How to fix this issue?
> > >
> > > Regards,
> > >
> > > Purva
> > >
> > >
> > >
> > > For assimilation and dissemination of knowledge, visit
> > > cakes.cdac.in
> > >
> > > [150th Anniversary Mahatma Gandhi]
> > >
> > >
> > >
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