Extreme-Dynamic-Config

This attribute configures port and VLAN based attributes.

• Name: Extreme-Dyn-Config​

• Value: 252​

• Type: String​

• Vendor: Extreme​

• Extreme Vendor ID is 1916​

The following features can be configured using Extreme-Dynamic-Config RADIUS VSA.

• VLAN Based Features:

  • DHCP Snooping

  • Dynamic ARP Inspection (DAI)

  • IGMP Snooping

• Port Based Features:

  • Custom Auto-Negotiation Advertisements

  • Bridge Protocol Data Unit (BPDU) Guard

  • IP Source Guard (IPSG)

  • Reauthentication

  • Simple Loop Prevention Protocol (SLPP) Guard

  • Traffic Control (Wake on LAN - WoL)

Note

If you use the Extreme-Dynamic-Config RADIUS VSA, then Dynamic ARP Inspection and DHCP Snooping are only enabled on the default VLAN if IPSG is present in the RADIUS attributes.

AN-ADVERTISMENTS:100Half or AN-ADVERTISMENTS:100H

AN-ADVERTISMENTS:100Half or AN-ADVERTISMENTS:100H settings configure Custom Auto-Negotiation Advertisements (CANA) speed and duplex to the following supported values:

• 10Half

• 100Full

• 100Half

• 100Full

• 1000Full

BPDU

This setting enables Bridge Protocol Data Unit (BPDU) Guard on the port where the client resides.

DAI

This setting enables Dynamic ARP Inspection (DAI) on the VLAN received from the RADIUS server. For a Flex-UNI port, DAI enables on the platform VLAN associated with the I-SID received from the RADIUS server.

DAI also enables on the default VLAN of the port to prepare for IP Source Guard (IPSG), which requires DAI and DHCP Snooping enabled on all VLANs. If the RADIUS server does not return a VLAN of I-SID, DAI enables on the default VLAN. For Flex-UNI ports, DAI enables on the platform VLAN associated with the untagged I-SID.

Note

If you use the Extreme-Dynamic-Config RADIUS VSA, then Dynamic ARP Inspection is only enabled on the default VLAN if IPSG is present in the RADIUS attributes.

DHCPSNOOP

This setting enables DHCP Snooping on the VLAN received from the RADIUS server. For a Flex-UNI port, DHCP Snooping enables on the platform VLAN associated with the I-SID received from the RADIUS server.

DHCP Snooping also enables on the default VLAN of that port to prepare for IP Source Guard (IPSG), which requires DAI and DHCP Snooping enabled on all VLANs. If the RADIUS server does not return a VLAN of I-SID, DHCP Snooping enables on the default VLAN. For Flex-UNI ports, DHCP Snooping enables for the platform VLAN associated with the untagged I-SID.

Note

If you use the Extreme-Dynamic-Config RADIUS VSA, then DHCP Snooping is only enabled on the default VLAN if IPSG is present in the RADIUS attributes.

IGMPSNOOP

This setting enables IGMP Snooping on the VLAN received from the RADIUS server. For a Flex-UNI port, IGMP Snooping enables on the platform VLAN associated with the I-SID received from the RADIUS server.

IPSG

This setting enables IP Source Guard (IPSG) on the port where the client resides.

In order to apply IPSG, DHCP Snooping and DAI must be configured on the RADIUS server. DHCP Snooping and DAI must be enabled on all VLANs.

The following is an example of a log message that displays if a setting is not configured correctly:

REAUTH or REAUTH:100

This setting enables EAPOL reauthentication on a port either manually using CLI or dynamically through RADIUS. The origin identifies how reauthentication was configured either CONFIG or RADIUS.

SLPPGUARD

This setting enables Simple Loop Prevention Protocol (SLPP) Guard on the port where the client resides.

WOL

This setting enables EAP traffic-control (Wake On LAN) on the port where the client resides.

Session Timeout and Reauthentication VSA behavior

Expected Behavior for DHCP Snooping and DAI Vendor Specific Attributes

The following table shows the behavior for Dynamic Host Configuration Protocol Snooping (DHCP Snooping) and Dynamic ARP Inspection (DAI) Vendor Specific Attributes (VSA) for each authentication scenario, depending on Extensible Authentication Protocol (EAP) Operational mode, Flex-UNI mode, and IP Source Guard (IPSG) VSA or RADIUS VLAN/ISID.