CCNA FAQ: IP Services Q1. How can you efficiently restrict the read-only function of a requesting SNMP management station based on the IP address? A. Place an ACL on the logical control plane. B. Place an ACL on the line when configuring the RO community string. C. Place an ACL on the VTY line. D. Place an ACL on all router interfaces. Answer: B. You can create and then … [Read more...]
L2TPD_SERVER_START_FAILED
The L2TPD_SERVER_START_FAILED message is reported when the Layer 2 Tunneling Protocol (L2TP) server did not start. L2TP facilitates the tunneling of PPP packets across an intervening network in a way that is as transparent as possible to both end-users and applications. The startup of the L2TP server failed to start. These errors are caused when L2TP cannot bind to the … [Read more...]
Spontaneous high Routing Engine CPU utilization
While processing updates, the Routing Engine (RE) CPU may show a utilization spike for a couple of seconds. This is normal behavior and can be safely ignored. Sometimes the Routing Engine (RE) CPU may spike for a couple of seconds. This spontaneous RE CPU spike is generally observed during processing updates. This may include RPD updates like route updates (which cannot be … [Read more...]
SNMPD_SOCKET_FATAL_FAILURE
The Simple Network Management Protocol (SNMP) agent process (snmpd) uses sockets for communication with subagents. The process exited after a socket operation, such as creation or removal, failed. When an SNMPD_SOCKET_FATAL_FAILURE event occurs, a message similar to the following is reported: lacpd[4880]: ms_init_ex: evListen: No space left on device init: … [Read more...]
SNMPD_FILE_FAILURE
The SNMPD_FILE_FAILURE message is reported into the system message file whenever the Simple Network Management Protocol (SNMP) agent process (snmpd) could not access the indicated file. This article documents an approach to troubleshoot this problem. The problem related to this syslog message is described in the following sections: The SNMPD_FILE_FAILURE message is logged … [Read more...]
Troubleshoot the ‘DCD_CONFIG_WRITE_FAILED’ log message
The DCD_CONFIG_WRITE_FAILED log message is generated in Junos. The following cases have been captured: Case 1 - Incorrect encapsulation that was set on the interface leads to the error message being generated. Case 2 - illegal encapsulation for per-unit-schedular. Other possible causes for this log message are: Out of Order Messages: These messages are due … [Read more...]
RMON_EVENT_fpc_high_heap_utilization
RMON_EVENT_fpc_high_heap_utilization The problem related to this syslog message is described in the following sections: The RMON_EVENT_fpc_high_heap_utilization message contains information about a FPC that is experiencing high memory utilization. An alarm is triggered when the heap utilization crosses a threshold. The message logged will look similar to … [Read more...]
SNMP Remote Traceroute Operation on Junos
This article provides information about the SNMP remote operation on Junos for traceroute. RFC 2925 defines the MIBs for performing remote ping, traceroute, and lookup operations on a remote host. Currently, Junos supports two SNMP remote operations: ping and traceroute. To use the SNMP remote operation, an SNMP community should be configured with authentication … [Read more...]
RMON_EVENT_re_high_dram_utilization
High DRAM (Dynamic Random Access Memory ) CPU utilization on RE (Routing Engine). The SNMP variable being reported is jnxOperatingBuffer.9.1.0.0. The OID value for this variable is 1.3.6.1.4.1.2636.3.1.13.1.11.9.1.0.0. The problem related to this syslog message is described in the following sections: The RMON_EVENT_re_high_dram_utilization message is logged each time the … [Read more...]
DHCP MIB’s for SNMP supported only from 12.1X version
DHCP MIB's for SNMP supported only from 12.1X version Various attributes of DHCP bindings can be retrieved using SNMP. However these are supported only from version 12.1X . Below is the document that provides a list of DHCP MIB. http://www.juniper.net/techpubs/en_US/junos12.1/topics/reference/mibs/mib-jnx-jdhcp.txt To retrieve an OID value of any MIB use the command … [Read more...]