Cisco Cisco IOS Software Release 12.4(22)XR Références techniques

To configure the PDSN to use SDBs to deliver PPP control packets for Always-On sessions, where the 
session is dormant, use the cdma pdsn a11 dormant sdb-indication match-qos-group command in 
global configuration mode. Use the no form of the command to disable this feature.

cdma pdsn a11 dormant sdb-indication match-qos-group group-number ppp-ctrl-pkts

no cdma pdsn a11 dormant sdb-indication match-qos-group group-number ppp-ctrl-pkts

No default values.

Global configuration

While data packets can be sent towards the mobile using SDBs, SDBs can also be used to deliver PPP 
control packets. This method can be particularly helpful for Always-On sessions, where the session is 
dormant. Basically, with Always On configured, the PDSN sends out LCP echo requests (and waits for 
LCP echo replies) to keep the session alive. As a result, when such a session goes dormant, a data 
channel needs to be setup to deliver these LCP echo requests to the MN. The other option is to use SDBs 
to deliver the LCP echo requests without setting up a data channel.

The following example shows how to enable the cdma pdsn a11 dormant sdb-indication 
match-qos-group command:

Router(config)# cdma pdsn a11 dormant sdb-indication match-qos-group 14 ppp-ctrl-pkts

 group-number

Specifies the classified match criteria.

12.3(11)YF2

This command was introduced.