• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/34

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

34 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
What are the five main components that are required to make progress with high availability?
Redundancy, Technology, People, Processes, and Tools
All five of these components must be individually implemented for a high-availability solution to succeed.
What is the typical failover time for a tuned OSPF or EIGRP network?
Under 1 second
A well-designed OSPF or EIGRP network can have a failover time of less than 1 second.
What is the typical failover time for an Etherchannel link?
Under 1 second
When a failure occurs on one of the Etherchannel links, traffic will be automatically transferred to the working links, typically in less than 1 second.
What is the recommended link configuration between the core and distribution layers?
Full mesh
It is recommended that distribution switches be full meshed with all core devices.
What is the recommended link configuration between the Distribution and Access layers?
Redundant links
Each Access layer device should have at least one redundant link to a second Distribution layer device.
What Cisco high-availability technology synchronizes the startup configuration, startup variables, running configuration, and other runtime data with the standby route processor?
Stateful Switchover (SSO)
The SSO feature allows the redundant route processor to provide a smoother switchover from a failing active route processor. When using this feature, there is very little layer 2 traffic interruption.
What Cisco high-availability technology works with BGP, EIGRP, OSPF, and IS-IS to continue to forward packets during a route processor failover?
NonStop Forwarding (NSF)
These routing protocols are NSF aware and are able to detect route processor failure and take action to ensure continued traffic forwarding.
What two types of NSF devices exist?
NSF-capable and NSF-aware devices
NSF not only requires that a device support the NSF capabilities, but also requires that the devices neighbors be NSF aware.
What Cisco switching devices are NSF-capable?
3750, 4500, and 6500 Series
As of this writing, the 3750, 4500, and 6500 series switches have some NSF-capability.
What are the parameters that are synchronized when using SSO?
Startup and running configurations, startup variables, layer 2 and 3 protocol tables, and state information
SSO allows for a quick supervisor switchover at layers 2 through 4. This is done by synchronizing the startup and running configuration information, startup variables, and layer 2 and 3 protocol tables and state information, which includes routing tables, MAC tables, and QoS and ACL information.
What version(s) of IP is supported by NSF with SSO?
IPv4 only
As of this writing, NSF with SSO is only supported with IPv4 traffic and protocols.
What Cisco IOS command would be used to enter redundancy configuration mode?
switch(config)#redundancy
In order to configure SSO, you must be in redundancy configuration mode.
What Cisco IOS command enables the SSO redundancy feature on the switch?
switch(config-red)#mode sso
Issuing this command puts the supervisor engines into SSO mode.
Which Cisco IOS command enables NSF with OSPF and EIGRP?
switch(config-router)#nsf
The nsf command is used to enable OSPF and EIGRP into NSF mode.
What Cisco IOS command can be used to display the status of SSO and NSF with CEF?
switch#show cef state
This command displays the route processors' state, as well as the state of SSO and NSF on the processor.
What Cisco IOS command is used to display the status of NSF with OSPF?
switch#show ip ospf
This command displays the status of NSF within OSPF and displays a timer of when the last NSF restart occurred.
What Cisco IOS command is used to display the status of NSF with EIGRP?
switch#show ip protocols
This command displays the status of NSF with EIGRP and associated configured timers.
What Cisco feature provides message and error reporting?
syslog
Syslog is a very common service that also runs on Cisco equipment and supplies both messaging and error reporting services.
What are the available syslog severity levels?
0 through 7
Syslog has eight severity levels, which are ranked from emergency level 0 through debugging level 7.
What are the four main sections of the Cisco syslog message standard?
Facility, Severity, Mnemonic, and Message-Text
A Cisco device logs a syslog message with these four components.
Which of the Cisco syslog message standard components consists of two or more uppercase letters, which indicate the hardware device, protocol or module?
Facility
There are a number of different facility codes that are used on Cisco devices; some common ones include SYS and LINK.
Which of the Cisco syslog message standard components consists of a single numeric digit that reflects the level of the message?
Severity
The severity field shows the specific syslog level that has been associated with a message. The message levels range from 0 (emergency) through 7 (debugging).
Which of the Cisco syslog message standard components consists of a code that uniquely identifies the error message?
Mnemonic
The mnemonic field is simply an abbreviated code that identifies the message.
What protocol is typically used as the foundation of network management?
SNMP
The Simple Network Management Protocol (SNMP) is typically used as a foundation for network management.
What Transport layer protocol is used by SNMP?
UDP
SNMP uses UDP ports 161 and 162.
What SNMP component contains a database of objects?
Management Information Base (MIB)
An MIB is a database of SNMP object information and can be used to store a number of different types of information (for example, interface status and statistical information).
What SNMP components polls agents on the network and compiles and displays data?
SNMP manager
The SNMP manager has the duty of both polling network agents and also compiling this information into a useful display for network administrators/engineers.
What type of SNMP notification is initiated by a device when certain events occur?
Trap
A network device can be configured to generate traps when different events occur, such as a link going up/down or supervisor switchovers.
What are the five basic SNMP messages that are used to transfer data between a manager and an agent?
Get Request, Get Next Request, Set Request, Get Response, and Trap
These five different messages are used by SNMP to transfer a variety of different types of information to and from an agent (which typically resides on a network device).
What are the two new message types that were introduced with SNMP v2?
Get Bulk Request and Inform Request
The Get Bulk Request provides additional efficiency over SNMPv1 as it eliminates repetitive requests. The Inform Request allows a confirmed message between the manager and the agent.
What are the three levels of security provided by SNMPv3?
noAuthNoPriv, authNoPriv, and authPriv
noAuthNoPriv does not provide authentication or encryption, autoNoPriv provides authentication but no encryption, and authPriv provides both authentication and encryption.
What Cisco IOS command sets the SNMP community string?
switch(config)#snmp-server community string ro|rw
This command is used when configuring SNMP to specify the community string, which is required to communicate with the device.
What are the most common benefits of implementing IP SLA?
Service-Level monitoring, measurement, and verificationNetwork performance monitoringEdge-to-Edge network availability monitoringIP Service network health assessment
These are just a few of the reasons to implement IP SLA.
What performance metrics are able to be monitored using IP SLA?
Delay, Jitter, Packet Loss, Path Sequencing, Path, Connectivity, and Server down time.
These different metrics are able to be monitored through configuration of IP SLA.