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<div class="moz-cite-prefix">W dniu 23.02.2017 o 13:58, Philippe
Maechler pisze:<br>
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<p class="MsoNormal"><span class="SpellE">Hello</span> Kea-Users<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-GB"
lang="EN-GB">We’re running two pairs of <span
class="SpellE">dhcpd</span> in our cable and fibre
network. The setup or the <span class="SpellE">config</span>
file gets more and more complex and hard to debug or make
new stuff. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-GB"
lang="EN-GB">Since we want to use reserved leases and often
have to end a lease before it expires, we’re thinking about
using kea. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-GB"
lang="EN-GB">The last time I looked at kea was before class
support was available, which we also heavily rely on.
Meanwhile kea supports classes and I think it’s worth a try
;)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-GB"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-ansi-language:EN-GB"
lang="EN-GB">A few questions arise before I try to merge our
current configuration:<o:p></o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:Arial;mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><span style="mso-list:Ignore">1.<span
style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">For our fiber network we have a group with
global options. Inside the group we have several hosts<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">e.g:<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">group {<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><span style="mso-spacerun:yes"> </span>option
vendor-encapsulated-options =
"s=<SERVERIP>;v=<VLANID>";<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">host CATV_000001_ONT{hardware ethernet
0:11:22:33:44:10;}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">host CATV_000002_ONT{hardware ethernet
0:11:22:33:44:20;}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">host CATV_000003_ONT{hardware ethernet
0:11:22:33:44:30;}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">…<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">Are groups supported in kea? In dhcpd we’re
using a class for each option-82 and provide global options
inside a group.</span></p>
</div>
</blockquote>
No, but you can get similar functionality with classes. You can
define a class with option values and then assign host reservations
to specific class.<br>
<blockquote cite="mid:004f01d28dd4$7c756fe0$75604fa0$@glattnet.ch"
type="cite">
<div class="WordSection1">
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:Arial;mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><span style="mso-list:Ignore">2.<span
style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">Each customer (or each option-82) gets one (1)
IPv4 address, an IPv6 address an an IPv6-Prefix/56. There
are a few cases when a customer gets 2, 3 or sometimes 4
addresses. We solved this with dynamic subclasses<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">// native vlan, only used when the cpe boots<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">class "CATV_000001_Port" { <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">match if ( substring ( option agent.circuit-id,
0, 25 )<span style="mso-spacerun:yes"> </span>=
"gaswXXX003 eth <UNIT>/<PORT>" ); <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">match hardware;<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">// voice vlan, only if the customer has voice<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">class "CATV_000001_Voice" { <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">match if ( substring ( option agent.circuit-id,
0, 30 )<span style="mso-spacerun:yes"> </span>=
"gaswXXX003 eth <UNIT>/<PORT>:<VLANDI>" );
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">spawn with option agent.circuit-id; <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">lease limit 2;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">// data / HSI vlan<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">class "CATV_000001_CPE_DHCP"<span
style="mso-spacerun:yes"> </span>{ <o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-left:35.4pt;text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">match if ( substring ( option agent.circuit-id,
0, 30 )<span style="mso-spacerun:yes"> </span>=
"gaswXXX003 eth <UNIT>/<PORT>: <VLANDI>" "
); <o:p></o:p></span></p>
<p class="MsoNormal"
style="margin-left:35.4pt;text-indent:35.4pt"><b
style="mso-bidi-font-weight:normal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">spawn with option agent.circuit-id; <o:p></o:p></span></b></p>
<p class="MsoNormal"
style="margin-left:35.4pt;text-indent:35.4pt"><b
style="mso-bidi-font-weight:normal"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">lease limit 1;<o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Courier
New";mso-fareast-font-family:"Times New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">I haven’t seen anything regarding subclasses in
the kea admin guide. Is this setup possible or are there any
other methods to achive this?</span></p>
</div>
</blockquote>
Long time ago Shawn Routhier explained that sub-classes were
implemented in dhcpd as performance optimization thing. There is not
and there likely won't be support for sub-classes in Kea.<br>
<br>
What does the XXX stand in each class above? Are they the same or
different for each subclasses? If they're different, you can define
three separate reservations for it. Not sure if I read it correctly,
but subclass 2 and 3 have the same first 30 bytes of the circuit-id.
Is that correct?<br>
<br>
<blockquote cite="mid:004f01d28dd4$7c756fe0$75604fa0$@glattnet.ch"
type="cite">
<div class="WordSection1">
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoListParagraph"
style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><!--[if !supportLists]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:Arial;mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB"><span style="mso-list:Ignore">3.<span
style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">Are static addresses based on the option-82 and
not the mac address available in kea? <o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">e.g<o:p></o:p></span></p>
<p class="MsoListParagraph"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">host ABCD { <o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">option agent.circuit-id = “gaswXXX003 eth
<UNIT>/<PORT>:<VLANID>”;<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:34.8pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">ipaddress = 10.1.2.3;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">}<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:35.4pt"><i
style="mso-bidi-font-style:normal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-font-family:"Times
New
Roman";mso-ansi-language:EN-GB;mso-fareast-language:DE-CH;mso-no-proof:yes"
lang="EN-GB">I didn’t check the syntax of that</span></i></p>
</div>
</blockquote>
You can have the reservation in v4 based on one of the following:
hw-address (that's hardware address set by the client in its
packet), duid (some clients can put their DUID within client-id),
client-id (that's an option inserted by a client) and circuit-id
(that's the agent.circuit-id option). That's described here:<br>
<a class="moz-txt-link-freetext" href="https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#host-reservation-v4">https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#host-reservation-v4</a><br>
<br>
For v6 we support reservations by duid and hw-address. However, you
can specify where the hw-address should come from and we currently
support duid, ipv6-link-local (both are set by the client) and
several options inserted by relays: client-link-addr-option,
remote-id, subscriber-id, docsis-cmts, docsis-modem. <br>
<br>
General description of v6 reservations:<br>
<a class="moz-txt-link-freetext" href="https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#host-reservation-v6">https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#host-reservation-v6</a><br>
<br>
Description how to make Kea treat various options as MAC addresses.<br>
<a class="moz-txt-link-freetext" href="https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#mac-in-dhcpv6">https://jenkins.isc.org/job/Kea_doc/guide/kea-guide.html#mac-in-dhcpv6</a><br>
<br>
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