Alex, I understand this the same way, but for some reason there are "dhcp-option82" configuration options under "helpers bootp". Looks like at least on some platform(EX series switches) those configuration options really do behave as DHCP option82 settings under "dhcp-relay":
http://www.juniper.net/techpubs/en_US/junos9.3/topics/example/port-security-dhcp-option82-with-switch-as-relay-agent.html regards, martin 2012/9/17 Alex Arseniev <[email protected]>: > Hello there, > "forwarding-options helpers bootp" is not DHCP relay, it is a different > feature although they both use same socket. > To insert option 82, you need "forwarding-option dhcp-relay" feature which > requires a license. > BOOTP helper and dhcp-relay|dhcp-local-server cannot be configured together > ( see above). > dhcp-relay and dhcp-local-server can be configured together in different > VRs/VRFs. > Thanks > Alex > > ----- Original Message ----- From: "Martin T" <[email protected]> > To: <[email protected]> > Sent: Monday, September 17, 2012 1:15 PM > Subject: [j-nsp] DHCP option 82 under "forwarding-options helpers > bootp"configuration > > >> Hi, >> >> JUNOS(10.4R9.2 at M10i) supports DHCP relay agent information option >> configuration under "forwarding-options helpers bootp". However, >> despite the configuration, DHCP messages received by DHCP server do >> not have option 82 present. For example I made such configuration: >> >> root@labM10i> show configuration forwarding-options helpers bootp >> dhcp-option82 { >> circuit-id { >> use-vlan-id; >> } >> remote-id { >> use-string test; >> } >> vendor-id { >> test; >> } >> } >> description "helpers bootp test"; >> server 10.10.10.1; >> interface { >> ge-1/2/0.5; >> } >> >> root@labM10i> >> >> ..and executed dhclient in a broadcast domain associated with >> interface ge-1/2/0.5. Packet capture results on a 10.10.10.1 DHCP >> server can be seen here: http://cloudshark.org/captures/e963f493caf8 >> As you can see, there is no option 82 added. >> >> >> Is it possible to add DHCP option 82 to messages forwarded to DHCP >> server under "forwarding-options helpers bootp" configuration? Or is >> this possible only with "dhcp-relay"? Latter would make more sense as >> this option should be strictly DHCP >> option(http://tools.ietf.org/html/rfc3046) not the BOOTP option? >> >> >> regards, >> martin >> _______________________________________________ >> juniper-nsp mailing list [email protected] >> https://puck.nether.net/mailman/listinfo/juniper-nsp >> > _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
