I'm currently trying to setup an ISG using TAL (transparent autologon). I already tested it using the ISG as a DHCP server and it works good.
But now I'm trying to make it work using an external DHCP server configuring dhcp relay on ISG and it is not working.
I'm using the following configuration:
aaa group server radius CAR server X.X.X.X auth-port 1812 acct-port 1813 ! aaa authentication login IP_SESSION group CAR aaa authorization subscriber-service IP_SESSION group CAR ! ! ip dhcp pool ISG relay source <int0/3.1000500_network> 255.255.255.248 relay destination <dhcp_server_address> ! ! policy-map type control IP_SESSION class type control always event session-start 10 authorize aaa list IP_SESSION password PASSWORD identifier mac-address ! class type control always event service-stop ! ! ! interface GigabitEthernet0/3.1000500 encapsulation dot1Q 1000 second-dot1q 500 ip address X.X.X.X 255.255.255.248 service-policy type control IP_SESSION ip subscriber l2-connected initiator dhcp !
As soon as I configure DHCP relay the permited CPE Mac_address begins flapping from authenticated state to disconnection.
The following message starts appearing:
SSS MGR [uid:910]: Failed to retrieve PM context
I already tested the DHCP server configuring the interface as a normal IP interface and it works perfectly with the CPE.
IntroductionPre-requisite: Caveat :When IPXE Boot could be done : IPXE Boot :Ipxe boot using DHCP Server :
iPXE boot in ASR9K
Migration recommendation document for Cxr to Exr.
This document applies to NCS5500 and ASR9000 routers and has been verified as such.
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