Infrastructure Maintenance

Question 1

What is an IP SLA

Answer 1

A method of measuring service level by sending test traffic

Question 2

What can an IP SLA measure

Answer 2

o Network delay
o Packet loss
o Jitter
o Voice quality

Question 3

How is an IP SLA configured

Answer 3

• Ip sla 1
• Icmp-echo
• Timeout 1500
• Frequency 3
• Request-data-size 200
• Global config: Ip sla schedule 1 life forever start-time now

Question 4

What “show” command will allow you to see the status of actively scheduled IP SLA probes

Answer 4

• Sh ip sla statistics

Question 5

What does SNMP stand for

Answer 5

simple network management protocol

Question 6

What is a MIB

Answer 6

library of OIDs for a particular device or set of devices

Question 7

What is the benefit of software defined network

Answer 7

• Software, central control of the network

* Adapts to an ever-changing environment

Question 8

What are the 3 types of planes

Answer 8

data
control
mgmt

Question 9

How does SDN work

Answer 9

SDN moves the control and mgmt. plane to central software controller

Question 10

What is an SBI southbound interface

Answer 10

• Represents communication between controller and device

Question 11

What is a NBI northbound interface

Answer 11

• Represents communication between controller and outside programs

Question 12

What are the types of SDN cisco implements

Answer 12

Traditional SDN
ACI application centric infrastructure
APIC enterprise module APIC-EM

Question 13

What is traditional SDN

Answer 13

o Cisco open SDN controller (OSC)
o Supported by a few Nexus switches/Cisco ASR router
o Openflow integration /support

Question 14

What is ACI

Answer 14

o Data center SDN
o Application focus (mostly VM)
o Users application policy infrastructure controller (APIC)

Question 15

What is APIC enterprise module

Answer 15

o Redefines SDN by keeping control plane in devices
o Allows expansion through installable apps
o Path trace app
o Path trace ACL analysis tool