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<div class="moz-cite-prefix">In order to solve this problem:<br>
<br>
Is one able to create something like:<br>
<br>
1. create subnet4_select hook<br>
Inside hook based on some conditions we set NEXT_STEP_DROP/SKIP<br>
subnet will not be selected<br>
<br>
2. create lease4_select hook<br>
subnet is not selected yet, we use getCfgSubnets4()->getAll();
and now we have all defined subnets<br>
then we pick first subnet that matches relayip<br>
we call Allocator and pickaddress. in case we don't get any
address we pick another subnet and repeat<br>
in case we go through all subnets/pools and don't get any address
we decide to DROP packet because we don't have any free lease to
handout<br>
<br>
Some help from Kea developers would be very appreciated :)<br>
<br>
Igor<br>
<br>
<br>
On 12/20/2016 02:33 PM, Igor Smitran wrote:<br>
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<div class="moz-cite-prefix">Disregard my last email :)<br>
I have tested it in my setup and i am also having a problem with
subnet classification based on relay ip.<br>
In case of multiple subnets kea doesn't choose next subnet when
first subnet pool is full, even though both subnets have same
relay ip classification.<br>
Because of this i am not able to implement kea in my network
because i will have multiple subnets behind same relay ip.<br>
<br>
On 12/20/2016 12:29 PM, Igor Smitran wrote:<br>
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<div class="moz-cite-prefix">Have you tried to setup one subnet
that unifies all those pools, i.e. 192.168.97.64/27<br>
and then define two pools in it?<br>
<br>
<br>
On 12/14/2016 08:55 AM, Andrea Gabellini wrote:<br>
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cite="mid:f4f62c68-2e38-1702-dbfa-60a1fd40afe7@telecomitalia.sm"
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<br>
Hello,<br>
<br>
same problem here. Any hint or workaround?<br>
<br>
Andrea<br>
<br>
<blockquote
cite="mid:f4d9d7b6-587d-3f14-2dd0-cedfe1021c0d@telecomitalia.sm"
type="cite">
<pre style="white-space: pre-wrap; color: rgb(0, 0, 0); font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; widows: 1; word-spacing: 0px; -webkit-text-stroke-width: 0px;">I'm trying to configure Kea 1.1.0 to service DHCP leases for a BRAS/BNG
router (Juniper MX). The BNG relays from its loopback IP address, and might
have several different subscriber subnets. This is kind of like sections
7.5.1 and 7.5.2 in the User Guide -- except I have multiple subnets all in
the same class. This worked fine in ISC-DHCPD, but I can't get the
equivalent configuration working in Kea. Is this unsupported at this time,
or is there something I've overlooked?
i.e.:
"Dhcp4":
{
...
"subnet4": [
{ "subnet": "192.168.97.72/29",
"id": 72,
"option-data": [ { "name": "routers", "data": "192.168.97.75" } ],
"relay": { "ip-address": "172.16.100.1" },
"pools": [ { "pool": "192.168.97.75/32" } ] },
{ "subnet": "192.168.97.88/29",
"id": 88,
"option-data": [ { "name": "routers", "data": "192.168.97.89" } ],
"relay": { "ip-address": "172.16.100.1" },
"pools": [ { "pool": "192.168.97.92/32" } ] },
]
},
With the above config, the first DHCP client gets the 192.168.97.75 IP
address. The second DHCP client gets no address, because subnet id 72
(192.168.9772/29)" is out of leases. The Kea server never even attempts to
allocate from the 192.168.97.88/29 subnet.
With ISC DHCPD, this shared network syntax accomplishes the desired results:
shared-network bngtest {
# BNG's loopback lo0.x /32 relay IP
subnet 172.16.100.1 netmask 255.255.255.255 {
}
subnet 192.168.97.72 netmask 255.255.255.248 {
}
pool {
# this is the default pool for dynamic customers
deny dynamic bootp clients; # DHCP is OK, BOOTP is not...
range 192.168.97.75 192.168.97.75;
option routers 192.168.97.73;
}
subnet 192.168.97.88 netmask 255.255.255.248 {
}
pool {
# this is an overlay pool for dynamic customers
deny dynamic bootp clients;
range 192.168.97.92 192.168.97.92;
option routers 192.168.97.89;
}
}
Thanks!
-Adam</pre>
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<br>
<pre class="moz-signature" cols="72">--
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Email: <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:andrea.gabellini@telecomitalia.sm">andrea.gabellini@telecomitalia.sm</a>
Skype: andreagabellini
Tel: (+378) 0549 886111
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