Cisco SRST User Guide - Page 16

Overview Chapter 1 Cisco SRST SNMP MIB Support Figure 1-1 SRST Router Deployment with Network Management Components IP IP IP Local IP phone cluster WAN Broken WAN line Cisco SRST router V Voice gateway M Cisco call manager 127128 SNMP network manager PSTN SNMP network manager SRST provides backup redundancy for broadband deployment of IP telephony to small branch offices. It can be used if Cisco CallManager is no longer in service due to a loss of WAN connectivity. SRST continues to provide basic call processing and IP telephony service to phones that fall back to SRST. The CISCO-SRST-MIB defines managed objects that pertain to SRST, SIP Registrar, and SIP phones. The CISCO-SRST-MIB has dependency on existing Cisco IOS MIBs, especially on the CISCO-CCME-MIB and the CISCO-VOICE-DIAL-CONTROL-MIB. All of these MIBs are accessible from SNMP management software running on external SNMP managers. Design of the CISCO-SRST-MIB The CISCO-SRST-MIB enables you to display configurations and monitor and send traps and asynchronous notifications to the SNMP management applications. The CISCO-SRST-MIB approach offers the following advantages over the CLI command approach: • A more efficient use of network bandwidth • Greater interoperability among vendors because standard SNMP protocols are used The following paragraphs describe the CISCO-SRST-MIB structure. Structure The Structure of Management Information (SMI) is represented conceptually by a tree hierarchy. Branches along the tree have short text strings and integers to identify them. Text strings describe object names, and integers allow computer software to encode compact representations of the names. The CISCO-SRST-MIB is part of the Cisco management group, which is part of private.enterprise.cisco.ciscoMgmt. Cisco SRST SNMP MIB Release 3.4 Guide 1-2 OL-7959-01