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ENCOR 4.0 Network Assurance (10%)

Network Assurance is the "is it working, and how do I prove it" domain. It is mostly configure and verify: syslog and SNMP, Flexible NetFlow, SPAN/RSPAN/ERSPAN, IP SLA, and NETCONF/RESTCONF all appear as configuration exhibits, show output and simulation tasks. Catalyst Center is the one describe objective, and objective 4.1 asks you to diagnose with the classic tools. At 10% of the exam it is a small domain, but the commands are short and the marks are easy if you have typed them.

Objective Verb Page
4.1 Diagnose network problems using debugs, conditional debugs, traceroute, ping, SNMP and syslog Diagnose Diagnostic Tools
4.2 Flexible NetFlow Configure and verify Flexible NetFlow
4.3 SPAN/RSPAN/ERSPAN Configure SPAN, RSPAN and ERSPAN
4.4 IP SLA Configure and verify IP SLA
4.5 Catalyst Center workflows for configuration, monitoring and management Describe Catalyst Center Workflows
4.6 NETCONF and RESTCONF Configure and verify NETCONF and RESTCONF

Time budget: week 7 of the study plan for 4.1 to 4.4 (a light week, so do the labs rather than extra reading). Week 8 starts with 4.5 and 4.6 on the first three days, then moves on to 5.1 in the Security domain. The RESTCONF lab on the 4.6 page is the week 8 lab.

Page Reading Lab
Diagnostic Tools 60 min 45 min
Flexible NetFlow 45 min 45 min
SPAN, RSPAN and ERSPAN 40 min 40 min
IP SLA 45 min 60 min
Catalyst Center Workflows 45 min 45 min (sandbox)
NETCONF and RESTCONF 60 min 60 min

Key syntax at a glance

debug condition interface GigabitEthernet2
logging host 192.168.100.50
logging trap notifications
snmp-server group NETOPS v3 priv read ALL
snmp-server user monitor NETOPS v3 auth sha <key> priv aes 128 <key>
!
flow record R / flow exporter E / flow monitor M
interface GigabitEthernet2
 ip flow monitor M input
!
monitor session 1 source interface Gi1/0/1 both
monitor session 1 destination remote vlan 900
monitor session 10 type erspan-source
!
ip sla 10
 icmp-echo 203.0.113.1 source-interface GigabitEthernet1
ip sla schedule 10 life forever start-time now
track 1 ip sla 10 reachability
!
netconf-yang
ip http secure-server
restconf

When you finish, take the Network Assurance practice questions. Aim for 80% or better before moving on.