Cisco Cisco Packet Data Gateway (PDG) Manual De Manutenção
New Feature Summary
Generally Available 06-30-2010
1-26
Figure 1-3 Direct Tunnel Support in GGSN
A major consequence of deploying Direct Tunnel is that it produces a significant increase in
control plane load on both the SGSN and GGSN components of the packet core. It is
therefore of paramount importance to a wireless operator to ensure that the deployed
GGSNs are capable of handling the additional control plane loads introduced of part of
Direct Tunnel deployment. The Starent GGSN and SGSN offers massive control plane
transaction capabilities, ensuring system control plane capacity will not be a capacity
limiting factor once Direct Tunnel is deployed.
control plane load on both the SGSN and GGSN components of the packet core. It is
therefore of paramount importance to a wireless operator to ensure that the deployed
GGSNs are capable of handling the additional control plane loads introduced of part of
Direct Tunnel deployment. The Starent GGSN and SGSN offers massive control plane
transaction capabilities, ensuring system control plane capacity will not be a capacity
limiting factor once Direct Tunnel is deployed.
This feature requires separate license key.
Highest Preference to LNS for DNS Value
DNS query and DNS resolve procedure on system is now modified to support DNS
parameters from LNS.
parameters from LNS.
The system will supports configuration of DNS at the Context level in Context
configuration with
configuration with
ip name-server
command as well as at the APN level in APN
configuration mode with
dns
and
ipv6 dns
commands, or it can be received from AAA
server.
When DNS is requested in PCO configuration, the following preference will be followed
for DNS value:
for DNS value:
1. DNS Values received from LNS have the first preference.
2. DNS values received from RADIUS Server has the second preference.