About Protocol Timer Profiles

A Protocol Timer profile contains the configuration of Diameter response timeout values for specific applications and message types within an application. A Protocol Timer profile is associated at both the global level for an MPE or MRA device, as well as for a specific diameter peer. For example, a peer with the identity of ggsn.realm.com can have a response timeout of 4500ms for an RAR message sent over Gx from the MPE device. You can also configure the maximum amount of time a received Diameter request can be processed by the MPE or MRA device. If an answer is not generated within the configured amount of time, then the request is discarded. This value is global to the entire MPE or MRA population. The values allow for a granularity of a tenth of a second.
Note: A timer configured at the peer level takes precedence over a value configured at the global level.

A profile can be associated with any MPE, MRA device, pooled MPE device, backup MRA device, associated MRA devices, Diameter peer, network element, or data source (Sh and Sy). Any profile associated with an MPE or MRA device is considered the global timer profile for that element. Therefore, each MPE or MRA has only one global timer profile.

In the deployment of an MRA device, it is possible that both the MRA and MPE device could have the same network elements associated with them through the CMP system. In this case, the Protocol Timer profile configured for the network element would only apply to the MRA device since the MRA device is the only one with direct connections to the network elements. The MPE device would be directly communicating with the MRA device and therefore the values configured in the global timer profile for the MPE device would apply. Specific values for a peer level profile pertaining to the MPE device to MRA device communication can be defined by adding the MRA device to the Diameter peer table for the MPE device. See the Policy Front End User's Guide for more information about Diameter peer tables.

Table 1 lists the Diameter applications and message types supported.
Supported Diameter Applications and Messages
Application / Interface Message
Gx CCR, RAR
Rx AAR, RAR, STR, ASR
S9 CCR, RAR
Rx over S9 AAR, RAR, ASR, STR
Sh UDR, SNR, PNR, PUR
Sy SLR, STR, SNR
Gy CCR, RAR, ASR
Sd CCR, TSR, RAR
Gxx CCR, RAR
VZr SDR