Hi guys,
I have a question about Yang language support for snmp alarm correlation.
It could be nice if a device supplier, specifying the Yang model of his network
element, could also specify the correspondence between snmp alarms produced and
affected part of the yang model of its device. This will allow for correlation
between snmp traps (or other events) affecting a given object and the service
instance created (through Netconf/yang) on that object.
As for example, let's say a device send the following trap
xx: snmpTraps.3 notification received from: 163.162.185.239 at 18/06/2015
14:13:27
Time stamp: 0 days 00h:00m:40s.15th
Agent address: 163.162.185.239 Port: 54835 Transport: IP/UDP Protocol:
SNMPv2c Notification
Manager address: 163.162.107.184 Port: 162 Transport: IP/UDP
Community: public
Enterprise: enterprises.8072.3.2.10
Bindings (8)
Binding #1: sysUpTime.0 *** (timeticks) 0 days 00h:00m:40s.15th
Binding #2: snmpTrapOID.0 *** (oid) snmpTraps.3
Binding #3: ifIndex.6 *** (int32) 6
Binding #4: ifDescr.6 *** (octets) dp0s3 [64.70.30.73.34 (hex)]
Binding #5: ifType.6 *** (int32) ethernet-csmacd(6)
Binding #6: ifAdminStatus.6 *** (int32) down(2)
Binding #7: ifOperStatus.6 *** (int32) down(2)
Binding #8: snmpTrapEnterprise.0 *** (oid) enterprises.8072.3.2.10
On the same device I created a service instance, which consists on an interface
configuration . The interface, described through the YANG model is the following
/tns:data/tnsA:interfaces/tnsB:dataplane/tnsB:tagnode[.='dp0s3']
Actually the SNMP trap impacts on the same interface where I configured my
service instance, but I have no means to understand it.
How can I enrich my YANG model to support the information that a trap with oid=
snmpTraps.3 and ifDescr = dp0s3 affect the same interface described in Yang by
the xpath expression
/tns:data/tnsA:interfaces/tnsB:dataplane/tnsB:tagnode[.='dp0s3']?
Do I need to define a new YANG extension statement to carry on such a
correspondence, or can I rely on existing structures?
Regards,
Giuseppe De Noia
------------------------------------------------------------------
Telecom Italia
Giuseppe De Noia
T.TG.NM.OSI,
Via Reiss Romoli, 274 10148 Torino
011 2288887
331 6001197
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