SNMP Flashcards
Application layer management protocol that supports message exchange
SNMP (Simple Network Management Protocol)
What three components are SNMP broken down into?
MIB (Management Information Base)
SNMP Agent
SNMP Manager
Virtual information storage collection that contains collections of managed objects
MIB
Runs directly on the managed device and collects all device information and translates it into a compatible SNMP format according to the MIB
SNMP Agent
Periodically polls SNMP agents on managed devices and queries the device for the data
SNMP Manager
Where do routers and all other network devices store statistics about the information of the processes and interfaces?
locally
What is the function of the SNMP manager?
Polls SNMP agents
Queries devices for data
Set thresholds to trigger alarms
What operation will get the information from the MIB to the SNMP Agent?
Get
What operation will get the next MIB object to the SNMP Agent?
Get-next
What operation allows a management application to retrieve a large section of the table at once?
Get-bulk
What operation is used to get information to the MIB from an SNMP manager? (Set values of the MIB)
Set
The SNMP Agent uses this operation to send triggered pieces of information to the SNMP Manager
Trap
What operation adds an acknowledgement that the Trap doesn’t provide?
Inform
What is a community?
password, plain-text string
What are the three types of communities?
Read-only
Read-write
Trap
Allows any SNMP application to gain access to the management information of the device?
Community string
What are the key security features of SNMPv3?
Hashing algorithms
Packet encryption
Individual passwords
What are the three levels of security in SNMPv3?
No authentication, no encryption (noAuthNoPriv) Authentication, but no encryption (authNoPriv) Authentication and encryption (authPriv)
What command sets the system contact string?
snmp-server contact [contact name]
What command sets the system location string?
snmp-server location [location]
What command defines the community access string with a read-only or read-write privilege?
snmp-server community [string] (ro/rw)
Gives read access to authorized management stations to all objects in the MIB, except the community strings, but it does not allow write access.
Read-only
Gives read and write access to authorized management stations to all objects in the MIB, but it does not allow access to the community strings.
Read-write
How does the SNMP system get its name?
Automatically inherits the hostname
What command would define “Cisco1” as a read only community string?
snmp-server community Cisco1 ro
What command defines SRV1 (10.1.1.10) as the SNMP destination for the traps that R1 generates? Specify Cisco3 as the community string to be included in the traps
snmp-server host 10.1.1.10 Cisco3
What command displays community access strings?
show snmp community
What command displays SNMP system location string?
show snmp location
What command displays SNMP system contact information?
show snmp contact
What command displays the SNMP host details?
show snmp host
What command would configure SNMPv2 for read-only access using the community string of “not_public” on a router?
snmp-server community not_public ro
What command allows you to enable the correct location information for SNMP for the respective router hostname and OSPF area of the HQ router (HQ-OSPF0)?
snmp-server location HQ-OSPF0
What SNMP configuration command requires a contact of “support@CCS.com”
snmp-server contact support@CCS.com
What SNMP command defines the Network Management Station (172.16.100.10) as the SNMP destination for traps that are generated by the HQ router with the community string “log_CCS” to be included in the traps?
snmp-server host 172.16.100.10 log_CCS