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dhcp-snooping, switch don't insert option 82 information

dhcp-snooping, switch don't insert option 82 information

Alexandr_P
Valued Contributor
Hello, colleagues!

I need to insert option 82 information in dhcp-packets.
Try bootprelay - all work fine.

Trying dhcp-snooping - switch don't insert option 82 information.

My config:
enable ip-security dhcp-snooping vlan v74_Users port 16 violation-action none
enable ip-security dhcp-snooping vlan v74_Users port 20 violation-action none
enable ip-security dhcp-snooping vlan v74_Users port 21 violation-action none
enable ip-security dhcp-snooping vlan v74_Users port 26 violation-action none
enable ip-security dhcp-snooping vlan v74_Users port 27 violation-action none
configure trusted-ports 26 trust-for dhcp-server
configure ip-security dhcp-snooping information option
configure ip-security dhcp-snooping information check
configure ip-security dhcp-snooping information circuit-id vlan-information v74 vlan v74_Users
configure ip-security dhcp-snooping information circuit-id vlan-information v75 vlan v75_Users2
configure ip-security dhcp-bindings storage write-interval 1440
configure ip-security dhcp-bindings storage filename bind.txt.xsf
enable ip-security dhcp-bindings restoration

User_Guide say:
When DHCP relay is configured in a DHCP snooping environment, the relay agent IP address should be configured as the trusted server.

ā€œconfigure trusted-servers {vlan} add server trust-for dhcp-serverā€

Should I add IP-address of DHCP-server or/and configure Extreme's switch as trusted-server? But I have "configure trusted-ports 26 trust-for dhcp-server"

Any ideas?

Thank you!

21 REPLIES 21

Alexandr_P
Valued Contributor
Hi!

Case number 01150094.
After consideration and communication with TAC I'ii updated information.

Thank you!

Hi, all!

I think it was a problem with client or with dhcp-server.
After change client PC and PC with dhcp-server I see normal behavior - dhcp-request packets come with option 82.

Sorry for wasted time.

Thank you!

Drew_C
Valued Contributor III
Yes - I was referring to the post here on The Hub. Thanks!

Hi, Drew!

If you mean - HUB's post, then yes.
If you mean case - then the issue is considered, case is still open.

Thank you!
GTM-P2G8KFN