HI Jean,
Thank you for your response.
We had really old ISC DHCP version and it doesn't support type 13
messages which is used for leasequery. I will check removing source
verify from bundle interface.
Regards,
--------
Rupesh Basnet
On 05/27/2014 05:53 AM, jean-francois.d...@videotron.com wrote:
Hi Rupesh,
I suggest you first make sure DHCP works properly for the affected CPE.
debug cable mac H.H.H
debug cable dhcp
These should allow you to see DHCP D.O.R.A. for a CPE with MAC H.H.H
The CMTS needs to use leasequery (RFC 4388) if you experienced an outage of
some sort to rebuild its internal database.
If leasequery option 13 is not working properly with ISC servers then you
may have this problem.
You could try removing "cable source verify" as a test.
Hope this helps.
Cheers,
JF
Jean-François Dubé
Technicien, Opérations Réseau IP
Ingénierie Exploitation des Réseaux
Vidéotron
"cisco-nsp" <cisco-nsp-boun...@puck.nether.net> a écrit sur 2014-05-24
09:17:37 :
De : Rupesh Basnet <brup...@subisu.net.np>
A : cisco-nsp@puck.nether.net,
Date : 2014-05-24 09:24
Objet : [c-nsp] Cisco CMTS and ISC DHCP Strange Issue
Envoyé par : "cisco-nsp" <cisco-nsp-boun...@puck.nether.net>
Hi everyone,
We have been using Cisco CMTS 7246 for about a decades. These days we
are facing some strange issue with CPE IP assigned by DHCP. We are using
ISC DHCP for both the modems and CPE. While I check modem searching for
the particular modem only then CPE taken is seen 0 but when I check cpe
with modem IP then I can see that customer CPE is taking IP address.
While checking on CMTS, the arp taken by CPE arp is also seen but no any
traffic are passing. If I bind the CPE mac and assign a IP then
everything gets to normal.
CMTS is configure to relay on two DHCP services running on fail over
mode and soure verification is done for all the addresses.
cmts2#show cable modem | in 814c
00e0.6f70.814c 10.28.114.242 C3/1/U0 online 157 0.00 1942 *0
* N
cmts2#show cable modem 10.28.114.242 cpe
IP address MAC address
*10.34.16.12 9061.0c15.2535 *
--
Regards,
--------
Rupesh Basnet
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