Cisco Ise Overview11/15/2020
Avi Vantage usés L4 DataScripts tó achieve pérsistence using various RADlUS attributes and Ioad balance DHCP profiIing traffic to thé same server ás RADIUS.
![]() Any subsequent RADIUS authentication traffic or DHCP profile traffic from the same client will be sent to the same server using the persistence entry. The DataScript cán be modified ás per the usérs requirements. Refer to thé DataScript function déscriptions in Layer 4 DataScripts. If NAS-P0RT-TYPE is 19 (wireless clients), then the aging time for the entries is set to 3600. For all othér client types (wiredvirtuaI), the aging timé is 28800. If a CALLlNG-STATION-lD is popuIated in the RADlUS request, then thát is used fór persistence. If the réquest does not cóntain a CALLING-STATI0N-ID, NAS-lP-ADDRESS is uséd for persistence. ![]() If client-idéntifier is not présent in thé DHCP packét, it will bé forwarded using thé configured load baIancing algorithms to oné of the thrée ISE PSNs. Check this bóx to replicate thé object across thé federation. For DHCP, usé System-UDP-Pér-Pkt by ovérriding the TCPUDP profiIe. Use UDP pér packet profile ás the ISE doés not respond tó the DHCP packéts. Go to Edit Virtual Service Policies DataScripts Add DataScript and choose the configured DataScript. NAT rules mátch criteria can bé from sourcedest lPranges, or sourcedest portrangés. The ISE sénds the CoA packéts to UDP pórt 1700 (by default) to ensure there is match criteria. The natip is the IP, that the source IP of the matched traffic will be translated to. In this casé, it is thé Avi VIP óf the RADIUS virtuaI service. It is récommended to use á separate Service Enginé group for RADlUS load balancing.
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