Troubleshooting Snmp Operation - Dell S4048T Configuration Manual

CONFIGURATION MODE
snmp-server enable traps snmp syslog-unreachable
To enable an SNMP agent to send a trap when the syslog server resumes connectivity, enter the following
command:
CONFIGURATION MODE
snmp-server enable traps snmp syslog-reachable
Table 92. List of Syslog Server MIBS that have read access
MIB Object
dF10SysLogTraps
The following example shows the SNMP trap that is sent when connectivity to the syslog server is lost:
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (19738) 0:03:17.38
MIB::snmpTrapOID.0 = OID: SNMPv2-
SMI::enterprises.6027.3.30.1.1.1
STRING: "NOT_REACHABLE: Syslog server
10.11.226.121 (port: 9140) is not reachable" SNMPv2-SMI::enterprises.
6027.3.6.1.1.2.0 = INTEGER: 2
Following is the sample audit log message that other syslog servers that are reachable receive:
Oct 21 00:46:13: dv-fedgov-s4810-6: %EVL-6-NOT_REACHABLE:Syslog server
10.11.226.121 (port: 9140) is not reachable
Following example shows the SNMP trap that is sent when connectivity to the syslog server is resumed:
DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (10230) 0:01:42.30
MIB::snmpTrapOID.0 = OID: SNMPv2-
SMI::enterprises.6027.3.30.1.1.2
STRING: "REACHABLE: Syslog server
10.11.226.121 (port: 9140) is reachable"SNMPv2-SMI::enterprises.6027.3.6.1.1.2.0 =
INTEGER: 2
Following is the sample audit log message that other syslog servers that are reachable receive:
Oct 21 05:26:04: dv-fedgov-s4810-6: %EVL-6-REACHABLE:Syslog server 10.11.226.121
(port: 9140) is reachable

Troubleshooting SNMP Operation

When you use SNMP to retrieve management data from an SNMP agent on a Dell Networking router, take
into account the following behavior.
• When you query an IPv4 icmpMsgStatsInPkts object in the ICMP table by using the snmpwalk
command, the output for echo replies may be incorrectly displayed. To correctly display this
information under ICMP statistics, use the show ip traffic command.
• When you query an icmpStatsInErrors object in the icmpStats table by using the snmpget or snmpwalk
command, the output for IPv4 addresses may be incorrectly displayed. To correctly display this
information under IP and ICMP statistics, use the show ip traffic command.
OID
1.3.6.1.4.1.6027.3.30.1.1
Object Values
1 = reachable2 =
unreachable
SNMPv2-SMI::enterprises.6027.3.30.1.1 =
SNMPv2-SMI::enterprises.6027.3.30.1.1 =
Simple Network Management Protocol (SNMP)
Description
Specifies whether the
syslog server is reachable
or unreachable.
SNMPv2-
SNMPv2-
1009