Network Management Flashcards
What is a syslog message
A message that is sent to the syslog server reporting what happened on a particular system
Explain to me the severity of a syslog message
Severity takes values of 0 - 7 where 0 is the most sever and 7 is the least severe (used for troubleshooting)
What does it mean if I log level 4 messages
Log level 4 messages and all more severe messages so anything < = 4 logged
What are the three components of SNMP
Manager, Agent, MIB (or management information base) which contains OID or object identifiers which set what info can be set and read by the manager
What is a trap notification
A trap notification notifies the manager automatically from an agent of a status
What is a query
Sent by the network manager, a query is a request from the manager to retrieve information from the OID of a MIB
What’s the difference between SNMPv1, v2c, and v3
v1 and v2c operated on the idea of a community string or password, while v3 offered encryption, authentication, and integrity checking
What is IPSLA
IP service level agreement measures network performance and influences routing decisions
What is jitter
a gap between packets
What distinguishes a distributed control plane in SDN
Normal devices in a network have a management plane for admin access, a control plane for creating switch and ip routing table, and a data plane containing the actual tables
What’s southbound interface
an API from the controller to the host
What’s a northbound interface
Sends API information and communicates from admin to controller
What is a centralized control plane in SDN
A centralized control plane in a SDN topography allows for the control planes from all devices to be consolidated into a single controller
