Cisco ASR 5000 Series User Manual

ASN Gateway Overview
ASN Call Procedure Flows ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-02
Table 29. Initial Network Entry and Data Session Establishment without Authentication Call Flow Description
Step
Description
1
MS performs initial ranging with the ASN BS. Ranging is a process by which an MS becomes time-aligned with the ASN
BS. The MS is synchronized with the BS at the successful completion of ranging and is ready to set up a connection.
2
MS sends basic capability exchange request (SBC-REQ) to ASN BS.
3
ASN BS sends MS-Pre-Attachment Request (authorization policy request) to ASN Gateway.
4
ASN Gateway sends MS-Pre-Attachment Response on the basis of authorization policy to ASN BS for MS.
5
ASN BS sends basic capability exchange response (SBC-RSP) to MS.
6
If authorization policy allows, ASN BS sends MS Pre-Attachment Acknowledgement to ASN Gateway.
7
MS sends Registration-Request (REG-REQ) to ASN BS.
8
ASN BS sends MS-Attachment-Request to ASN Gateway.
9
ASN Gateway sends MS-Attachment-Response to ASN BS and reserves the resource.
10
ASN BS sends Registration-Response to MS.
11
ASN BS sends MS-Attachment-Acknowledgement to ASN Gateway.
12
ASN Gateway sends Path Registration Request to ASN BS.
13
ASN BS creates 802.16 connection and establishes path with MS.
14
ASN BS sends Path Registration Response to ASN Gateway and ASN Gateway creates service flow with CSN over which
PDUs can be sent and received.
15
ASN Gateway sends Path Registration Acknowledgment to ASN BS.
16
GRE tunnel mapped to 802.16 connection between MS and ASN BS.
17
R6 GRE data path established between ASN BS and ASN Gateway and data flow starts.
Initial Network Entry and Data Path Establishment with Authentication (Single
EAP)
This section describes the procedure of initial entry and data session establishment for a WiMAX Subscriber Station
(SS) or MS with single EAP authentication.
The following figure provides a high-level view of the steps involved for initial network entry of an SS/MS with EAP
authentication and data link establishment. The following table explains each step in detail.

Cisco ASR 5000 Series Specifications

General

Brand	Cisco
Model	ASR 5000 Series
Category	Network Router
Language	English