[c-nsp] Cisco 4506 dhcpv6 interface-id, remote-id

[Pshem Kowalczyk]

I haven't worked with this particular switch, but does it act as a
relay-agent? I.e is the message you get a RELAY-FWD one (type 12) with the
actual message inside? If so you could unpack the switch IP address from
the outer message and use option 18 to id the port.

kind regards
Pshem

On Wed, 31 May 2017 at 23:43 Christian Kratzer <ck-lists at cksoft.de> wrote:

> Hi,
>
> I have multiple c4506 with 80 port linecards in a dhcp based point to
> point ftth deployment.
>
> We already use dhcp option82 circuit-id for identifying customer ipv4
> assignments in the dhcp server.
>
>   ip dhcp snooping vlan 10 information option format-type circuit-id
> override string <ourlineid>
>
> This is good as it allows us to provision our lineid to be used for the
> circuit-id value.
>
> For ipv6 I was intending to use dhcpv6 options 18 or 37 for interface-id
> or remote-id.
>
> Sadly both seem to provide non user configurable values that are only
> unique in context of the router in question.
>
> Option18 provides us with: Gi2/3
>
> Option37 provides binary data that does also not inlucude a hostname.
>
> Gi2/3 is of course not unique in a network of more than one switch.
>
> It seems to be the whole feature is utterly useless.  I have also not
> found a single cisco platform that would provide user configurable ipv6
> opt18 or 37.
>
> Is a feature like this somewhere on the roadmaps  for the c4506 platform ?
>
> Greetings
> Christian
>
> --
> Christian Kratzer                   CK Software GmbH
> Email:   ck at cksoft.de               Wildberger Weg 24/2
> Phone:   +49 7032 893 997 <+49%207032%20893997> - 0       D-71126
> Gaeufelden
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>  Geschaeftsfuehrer: Christian Kratzer
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