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Today's Topics:
1. Re: Reg: dhcp service unresponsive frequently (Bill Shirley)
----------------------------------------------------------------------
Message: 1
Date: Wed, 22 Jan 2020 22:22:34 -0500
From: Bill Shirley <b...@c3po.polymerindustries.biz>
To: dhcp-users@lists.isc.org
Subject: Re: Reg: dhcp service unresponsive frequently
Message-ID:
<4fda965b-d602-bbc5-797f-7cddeb64e...@c3po.polymerindustries.biz>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
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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