Hi Duane,
I'm using Kea 1.2 and I didnt have problem provisioning CMs and CPEs on
Our DOCSIS/HFC networks. I didnt need to disable Client-ID on DHCP
Offers packets. Write me on private if you like.
Kea docs are well documented, I suggest to check it again.
I attach an simple and working example for provisioning CMs and CPES in
Kea 1.2 and dhcpdump capture (my Kea responses DHCP Client-ID -option 61-)
El 09/08/17 a las 17:57, Duane Wylie escribió:
We're evaluating KEA (version 1.2.0) as our DHCP platform moving
forward. In my testing with our Docsis/HFC network, I am not able to
have a docsis modem respond to a DHCPOFFER message from KEA. I can
get the same modem to respond to a similarly formatted DHCPOFFER from
ISC DHCP.
Looking at the tcpdump output from the server, the only difference
that stands out is the Client-ID (option 61). While, in both cases,
the docsis modem does supply the Client-ID in the DHCPDISCOVER packet,
the KEA server DOES include the Client-ID in the resulting DHCPOFFER
where the ISC DHCP server DOES NOT include the Client-ID in
it's DHCPOFFER.
(Interesting note: RFC 2131 (Draft Standard) states that the server
"MUST NOT" include the Client-ID in the DHCPOFFER. At the same time,
RFC 6842 (Proposed Standard) indicates the server MUST include the
Client-ID IF the client provided it in the DHCPDISCOVER.)
I need to determine why the KEA offer is not 'working'. Admittedly, I
do not know for certain that the Client-ID is the root of my problem.
I think the next step is to somehow prove that success or failure
does indeed hinge on the inclusion of the Client-ID field in the
DHCPOFFER. I'm at somewhat of an impasse, as I cannot figure out how
to tell KEA to NOT include the option. (At the same time, I cannot
figure out how to tell ISC DHCP to include the option - though this is
off topic for the Kea-users list.)
Does anyone have any insight into a configuration option to disable
option 61? Is there a generic way to disable a certain option via the
kea.conf file? Or, where in the code can I 'flip the switch' the turn
option 61 off on an offer?
Thanks in advance,
Duane
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---------------------------------------------------------------------------
TIME: 2017-08-10 09:43:41.701
IP: 200.123.33.2 (0:c:42:9a:6e:75) > 10.10.0.2 (82:de:11:bc:9a:44)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 1
XID: 0ee59ebd
SECS: 0
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 10.40.0.2
CHADDR: 00:05:ca:9d:11:60:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 1 (DHCPDISCOVER)
OPTION: 60 ( 10) Vendor class identifier docsis3.0:
OPTION: 0 ( 61) pad
OPTION: 61 ( 7) Client-identifier 01:00:05:ca:9d:11:60
OPTION: 125 (141) ??? 0000118b88010102 ........
0583058101010102 ........
0103030101040101 ........
0501010601010701 ........
180801080901000a ........
01010b01180c0101 ........
0d0200400e020010 ...@....
0f01011004000000 ........
0411010112071000 ........
05ca9d1161130101 ....a...
1401001501381601 .....8..
0117010118010419 ........
01041a01041b0128 .......(
1c01021d01041e01 ........
201f011020011821 ... ..!
0102220101230101 .."..#..
2401182501012602 $..%..&.
0040270101 .@'..
OPTION: 0 ( 43) pad
OPTION: 43 (121) Vendor specific info 020345434d030845 ..ECM..E
434d3a454d544104 CM:EMTA.
0c32353231303430 .2521040
3136373939050231 16799..1
410616322e302e30 A..2.0.0
2e31352d70726533 .15-pre3
2d4d4743502d5456 -MGCP-TV
4e0717505350552d N..PSPU-
426f6f7420312e30 Boot 1.0
2e392e31352d4832 .9.15-H2
2e33080630303035 .3..0005
434109084256472d CA..BVG-
333635330a134869 3653..Hi
74726f6e20546563 tron Tec
686e6f6c6f676965 hnologie
73 s
OPTION: 55 ( 8) Parameter Request List 1 (Subnet mask)
2 (Time offset)
3 (Routers)
4 (Time server)
7 (Log server)
54 (Server identifier)
125 (???)
122 (???)
OPTION: 82 ( 32) Relay Agent Information
Circuit-ID 54:6f:70:76:69:73:69:6f:6e
Remote-ID 00:05:ca:9d:11:60
Chaos 00:00:11:8b:06:01:04:01:02:03:00
---------------------------------------------------------------------------
TIME: 2017-08-10 09:43:41.701
IP: 10.10.0.2 (82:de:11:bc:9a:44) > 10.40.0.2 (0:c:42:9a:6e:75)
OP: 2 (BOOTPREPLY)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 1
XID: 0ee59ebd
SECS: 0
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 10.40.0.10
SIADDR: 10.10.0.2
GIADDR: 10.40.0.2
CHADDR: 00:05:ca:9d:11:60:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: test.bin.
OPTION: 1 ( 4) Subnet mask 255.255.0.0
OPTION: 2 ( 4) Time offset -7200 ()
OPTION: 3 ( 4) Routers 10.40.0.1
OPTION: 4 ( 4) Time server 10.10.0.2
OPTION: 7 ( 4) Log server 10.10.0.2
OPTION: 51 ( 4) IP address leasetime 3600 (60m)
OPTION: 53 ( 1) DHCP message type 2 (DHCPOFFER)
OPTION: 54 ( 4) Server identifier 10.10.0.2
OPTION: 58 ( 4) T1 900 (15m)
OPTION: 59 ( 4) T2 1800 (30m)
OPTION: 61 ( 7) Client-identifier 01:00:05:ca:9d:11:60
OPTION: 82 ( 32) Relay Agent Information
Circuit-ID 54:6f:70:76:69:73:69:6f:6e
Remote-ID 00:05:ca:9d:11:60
Chaos 00:00:11:8b:06:01:04:01:02:03:00
---------------------------------------------------------------------------
TIME: 2017-08-10 09:43:41.802
IP: 200.123.33.2 (0:c:42:9a:6e:75) > 10.10.0.2 (82:de:11:bc:9a:44)
OP: 1 (BOOTPREQUEST)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 1
XID: 0ee59ebd
SECS: 0
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 10.40.0.2
CHADDR: 00:05:ca:9d:11:60:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: .
OPTION: 53 ( 1) DHCP message type 3 (DHCPREQUEST)
OPTION: 60 ( 10) Vendor class identifier docsis3.0:
OPTION: 0 ( 61) pad
OPTION: 61 ( 7) Client-identifier 01:00:05:ca:9d:11:60
OPTION: 125 (141) ??? 0000118b88010102 ........
0583058101010102 ........
0103030101040101 ........
0501010601010701 ........
180801080901000a ........
01010b01180c0101 ........
0d0200400e020010 ...@....
0f01011004000000 ........
0411010112071000 ........
05ca9d1161130101 ....a...
1401001501381601 .....8..
0117010118010419 ........
01041a01041b0128 .......(
1c01021d01041e01 ........
201f011020011821 ... ..!
0102220101230101 .."..#..
2401182501012602 $..%..&.
0040270101 .@'..
OPTION: 0 ( 43) pad
OPTION: 43 (121) Vendor specific info 020345434d030845 ..ECM..E
434d3a454d544104 CM:EMTA.
0c32353231303430 .2521040
3136373939050231 16799..1
410616322e302e30 A..2.0.0
2e31352d70726533 .15-pre3
2d4d4743502d5456 -MGCP-TV
4e0717505350552d N..PSPU-
426f6f7420312e30 Boot 1.0
2e392e31352d4832 .9.15-H2
2e33080630303035 .3..0005
434109084256472d CA..BVG-
333635330a134869 3653..Hi
74726f6e20546563 tron Tec
686e6f6c6f676965 hnologie
73 s
OPTION: 50 ( 4) Request IP address 10.40.0.10
OPTION: 54 ( 4) Server identifier 10.10.0.2
OPTION: 55 ( 8) Parameter Request List 1 (Subnet mask)
2 (Time offset)
3 (Routers)
4 (Time server)
7 (Log server)
54 (Server identifier)
125 (???)
122 (???)
OPTION: 82 ( 32) Relay Agent Information
Circuit-ID 54:6f:70:76:69:73:69:6f:6e
Remote-ID 00:05:ca:9d:11:60
Chaos 00:00:11:8b:06:01:04:01:02:03:00
---------------------------------------------------------------------------
TIME: 2017-08-10 09:43:41.802
IP: 10.10.0.2 (82:de:11:bc:9a:44) > 10.40.0.2 (0:c:42:9a:6e:75)
OP: 2 (BOOTPREPLY)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 1
XID: 0ee59ebd
SECS: 0
FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 10.40.0.10
SIADDR: 10.10.0.2
GIADDR: 10.40.0.2
CHADDR: 00:05:ca:9d:11:60:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: test.bin.
OPTION: 1 ( 4) Subnet mask 255.255.0.0
OPTION: 2 ( 4) Time offset -7200 ()
OPTION: 3 ( 4) Routers 10.40.0.1
OPTION: 4 ( 4) Time server 10.10.0.2
OPTION: 7 ( 4) Log server 10.10.0.2
OPTION: 51 ( 4) IP address leasetime 3600 (60m)
OPTION: 53 ( 1) DHCP message type 5 (DHCPACK)
OPTION: 54 ( 4) Server identifier 10.10.0.2
OPTION: 58 ( 4) T1 900 (15m)
OPTION: 59 ( 4) T2 1800 (30m)
OPTION: 61 ( 7) Client-identifier 01:00:05:ca:9d:11:60
OPTION: 82 ( 32) Relay Agent Information
Circuit-ID 54:6f:70:76:69:73:69:6f:6e
Remote-ID 00:05:ca:9d:11:60
Chaos 00:00:11:8b:06:01:04:01:02:03:00
{
"Dhcp4": {
"interfaces-config": {
"interfaces": [ "eth0" ],
"dhcp-socket-type": "udp"
},
"control-socket": {
"socket-type": "unix",
"socket-name": "/tmp/kea-dhcp4-ctrl.sock"
},
"lease-database": {
"type": "memfile"
},
"expired-leases-processing": {
"reclaim-timer-wait-time": 10,
"flush-reclaimed-timer-wait-time": 25,
"hold-reclaimed-time": 3600,
"max-reclaim-leases": 100,
"max-reclaim-time": 250,
"unwarned-reclaim-cycles": 5
},
"renew-timer": 900,
"rebind-timer": 1800,
"valid-lifetime": 3600,
"client-classes": [
{
"name": "Cablemodem",
"test": "substring(option[60].hex,0,6) == 'docsis'",
"next-server": "10.10.0.2",
"boot-file-name": "test.bin"
}
],
"subnet4": [
{
"subnet": "10.40.0.0/16",
"pools": [
{ "pool": "10.40.0.10 - 10.40.0.10" },
{ "pool": "10.40.0.30 - 10.40.0.32" } ],
"next-server": "10.10.0.2",
"client-class": "Cablemodem",
"option-data": [
{
"name": "routers",
"data": "10.40.0.1"
},
{
"name": "time-servers",
"data": "10.10.0.2"
},
{
"name": "log-servers",
"data": "10.10.0.2"
},
{
"name": "time-offset",
"data": "-7200"
},
{
"name": "broadcast-address",
"data": "10.40.255.255"
}
],
"relay": {
"ip-address": "10.40.0.2"
}
},
{
"subnet": "10.60.0.0/16",
"id": 1010,
"pools": [ { "pool": "10.60.0.10 - 10.60.10.254" } ],
"relay": {
"ip-address": "10.60.0.1"
},
"option-data": [
{
"name": "time-servers",
"data": "10.10.0.2"
},
{
"name": "routers",
"data": "10.60.0.1"
},
{
"name": "time-offset",
"data": "-7200"
},
{
"name": "log-servers",
"data": "10.10.0.2"
},
{
"name": "broadcast-address",
"data": "10.60.255.255"
},
{
"name": "domain-name-servers",
"data": "8.8.8.8,8.8.4.4"
}
]
}
]
}
}
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