Cisco Cisco Packet Data Gateway (PDG) Guía Para Resolver Problemas
ASN Gateway Overview
▀ ASN Call Procedure Flows
▄ Cisco ASR 5000 Series Access Service Network Gateway Administration Guide
OL-22953-01
Figure 22. Uncontrolled Inter-ASN Gateway Handover Procedure
S e rv in g
A S N B S
A n c h o r
A S N -G W
M S /S S
D ATA
2
4
1
3
7
8
9
1 0
11
1 2
1 3
1 4
1 6
Ta rg e t
A S N B S
N o n -A n c h o r
Ta rg e t A S N -G W
1 7
1 6
1 8
1 5
6
5
Table 12. Uncontrolled Inter-ASN Gateway Handover Procedure Description
Step
Description
1
MS sends RNG-REQ message to target ASN BS.
2
Target ASN BS sends Context-Request message to serving ASN BS.
3
Serving ASN BS sends Context-Report message with MS context information to target ASN BS.
4
Target ASN BS sends Context-Request message to target non-anchor ASN Gateway.
5
Target non-anchor ASN Gateway forwards Context-Request message to anchor ASN Gateway.
6
Anchor ASN Gateway sends Context-Report message with MS context information to target non-anchor ASN Gateway.