OpenForum RSS: dhcp option 82

dhcp option 82 (Elisium)

Fri, 15 May 2009 09:30:46 GMT

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http://forum.nag.ru/forum/index.php?showtopic=48798

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dhcp option 82 (sproot)

Thu, 07 May 2009 21:24:53 GMT

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dhcp option 82 (charliecharlie)

Thu, 07 May 2009 15:23:50 GMT

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dhcp option 82 (sproot)

Thu, 07 May 2009 13:10:21 GMT

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>[�� ]
>Switch(config-if)#ip address 10.10.10.0 255.255.0.0
>Switch(config-if)#no ip redirects
>Switch(config-if)#exit
>Switch(config)#interface vlan 11
>Switch(config-if)#ip unnumbered Loopback 1
>Point-to-point (non-multi-access) interfaces only
>Switch(config-if)#
>
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dhcp option 82 (charliecharlie)

Thu, 07 May 2009 10:39:31 GMT

�� IP Unnumbered for VLAN-SVI interfaces
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Switch(config)#int loopback 1
Switch(config-if)#ip address 10.10.10.0 255.255.0.0
Switch(config-if)#no ip redirects
Switch(config-if)#exit
Switch(config)#interface vlan 11
Switch(config-if)#ip unnumbered Loopback 1
Point-to-point (non-multi-access) interfaces only
Switch(config-if)#

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dhcp option 82 (charliecharlie)

Thu, 07 May 2009 10:32:57 GMT

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dhcp option 82 (sproot)

Wed, 06 May 2009 22:45:37 GMT

>>ip dhcp relay information option
>>ip dhcp relay information policy replace
>>ip dhcp relay information trust-all
>>ip dhcp snooping
>>ip dhcp snooping information option
>>ip dhcp snooping information option allowed-untrusted
>>��, � ip helper-address <ip> �� L3 �� dhcp ��.
>>�� 82.
>
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> trust DHCP Snooping trust config
>Switch(config-if)#
>
>>�� IOS?
>
>Catalyst 4000 L3 Switch Software (cat4000-I5K91S-M), Version 12.2(25)EWA14
>>�� SVI �� ?
>
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dhcp option 82 (charliecharlie)

Tue, 05 May 2009 12:52:03 GMT

>ip dhcp relay information option
>ip dhcp relay information policy replace
>ip dhcp relay information trust-all
>ip dhcp snooping
>ip dhcp snooping information option
>ip dhcp snooping information option allowed-untrusted
>��, � ip helper-address <ip> �� L3 �� dhcp ��.
>�� 82.

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>��, �� ip dhcp relay information option?

Switch(config)#ip dhcp relay information ?
check Validate relay information in BOOTREPLY
policy Define reforwarding policy
trust-all Received DHCP packets may contain relay info option with zero giaddr
Switch(config)#
Switch(config)#interface fa 2/27 �3
Switch(config-if)#ip dhcp relay information ?
trusted Received DHCP packet may contain relay info option with zero giaddr
Switch(config-if)#
Switch(config)#interface fastEthernet 2/30 �2
Switch(config-if)#ip dhcp snooping ?
limit DHCP Snooping limit
trust DHCP Snooping trust config

dhcp option 82 (sproot)

Tue, 05 May 2009 10:45:27 GMT

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>
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> Lease for 10.10.10.27 Swith port: 2/27 Switch MAC: 0:6:0:8:a3:69:22:0 Switch IP:
>10.10.10.1 VLAN: 2 MAC on the port: 0:11:2f:80:6b:37
>DHCPDISCOVER from 00:11:2f:80:6b:37 (philka) via 10.10.10.1
>DHCPOFFER on 10.10.10.27 to 00:11:2f:80:6b:37 (philka) via 10.10.10.1
> Lease for 10.10.10.27 Swith port: 2/27 Switch MAC: 0:6:0:8:a3:69:22:0 Switch IP:
>10.10.10.1 VLAN: 2 MAC on the port: 0:11:2f:80:6b:37
>DHCPREQUEST for 10.10.10.27 (192.168.0.55) from 00:11:2f:80:6b:37 (philka) via 10.10.10.1
>DHCPACK on 10.10.10.27 to 00:11:2f:80:6b:37 (philka) via 10.10.10.1

��, � �� -�� ..�� , �� dhcp relay agent �� MPLS IP VPN. �� . :) � ��-�� :

ip dhcp relay information option
ip dhcp relay information policy replace
ip dhcp relay information trust-all

ip dhcp snooping
ip dhcp snooping information option
ip dhcp snooping information o