Cisco ASR 5000 Series Product Overview â–„
Figure 62. PMIP4 Session Release Call Flow
ASN GW/PMIP/ FA/
DHCP Proxy
MS/SS
3
5
2
6
7
8
CSN HA
4
1
9
Table 46. PMIP4 Session Release Call Flow Description
The session release trigger send by MS sending DHCP-Release message to the ASN GS or DHCP proxy has expired on
lease time or FA initiates session release.
ASN Gateway initiates the session release with PMIPv4 client by sending FA_Revoke_Req and sends PMIP De-Reg RRQ
(Registration Revocation) message to CSN HA.
CSN HA starts release of MIP binding.
CSN HA sends PMIP De-Reg RRQ (Registration Revocation) message to ASN Gateway and PMIP client sends
GA_Revoke_Rsp message to ASN Gateway.
WiMAX session terminated between MS and CSN HA.