Cisco SDWAN

Here you will get Links related to Cisco SDWAN Viptela Documents .

Cisco SDWAN Interview Question ( 25 Q ) & answer YouTube Video link :

YouTube Video Link : –

1) What is SDWAN , explain various components of SDWAN ?

cost, reliability/sla, cloud inter , security , app-route & fw .

follow-up : how?

2) what types of Branch designs are possible with Viptela ?

MPLS , MPLS+INET , Dual INET

3) List out the methods for application optimization in Cisco SDWAN .

FEC “” Forward error correction 

TCP Optimization

App aware routing ( smart Qos ) using NBAR2

Cloudexpress ( Cloud onRamp for SaaS & IaaS)

QoS

follow up , how to apply TCP optimization , App Route Policy & Qos

What is local vs Global Policy || what is Control vs Data policy in

the given list .

4) What is Packet out of Order (POC) ? how SDWAN Solve this issue ?

5) What types of licensing in SDWAN and use ?

Cisco DNA Essentials

Cisco DNA Advantage

Cisco DNA Premier

refer the link below :

https://www.cisco.com/c/en/us/products/software/dna-subscription-wan/index.html#~compare-subscriptions

6) Explain the Hardware/Software types ?

7) Explain ZTP process in detail , any difference between ZTP & PNP ?

8) Explain Underlay & Overlay Protocol in SDWAN .

How we can redistribute between OSPF & OMP inside vpn 10 ?

//Mutual redistribution

ospf to omp

vpn 10 ; router ospf area 0 ; redistribute omp

omp to ospf

vpn 10 ; omp ; advertise ospf external

!

9) Explain the route control option in SDWAN

( via Central Policy vs Local Policy ) .

10) List out the High availability options in Data Plan ?

tloc-extension , IGP & BGP , VRRP , BFD

follow-up , how tloc-extension works ,

and what changes we have in VRRP ( Customized VRRP )

11) What are different modes of BFD ?

3 (BFD hello , BFD Poll interval , BFD Multiplier )

follow up , where are they getting used .

12) What’s difference between Feature template, Device Template , Policy template & Security Template ?

13) List out security features , that we can create over cEdge with Secure Virtual image ?

FW, AMP , URL/WEB Filter , IPS/IDS , DNS(Cisco Umbrella)

14) What’s differnce between App-aware-routing & App-aware-FW ,

  can i apply App-aware-FW with in same VPN or vrf ?

15) What’s Use of TPM & TAM ? Do they have any differences ?

TPM : trusted platform module

TAM : trusted Anchor module

!

16) What’s importance of vBond in SDWAN Fabric , is this forming

TLS / DTLS tunnel with Edge devices ?

17) How we can achieve high availibility in vBond , vSmart & vManage ?

18) Can vEdge / cEdge create ipsec / IKE tunnels with non-sdwan

devices or Cloud (AWS/AZure) , if yes then what type of tunnels ?

–> cEdge/vEdge ipsec tunnel will not form with non-sdwan devices (cisco)

but we can create IKE based tunnels with AWS(ike1)/Azure(ike2).(check)

!

19) Assume you have 2 DC , 2 Branches , 2 ISP and you have to create

rule like below :

BR1 –> should prefer DC1 and backup to DC2

BR2 –> should prefer DC2 and backup to DC1

–> refer tshoot section

20) Assume you have 2 DC , 2 Branches , 2 ISP and you have to create rule like below :

2 Braches do not form direct ipsec tunnels , rather follow Hub and Spoke tunnel method .

–> tshoot

21) Whats the importance of TLOC in the SDWAN fabric , Define tloc ?

follow-up : what’s is meaning of “restrict” mode ?

22) What’s significance of OMP ? Explain Best path selection in OMP .

23) What is the Key difference between Control Policy & Data Policy ?

Can a control policy be a Data Policy or Vice Versa ?

24) Assume you have 2 DC , 2 Branches , 2 ISP and each DC and Branches

having 2 vEdges . you have 1 vManage , 1 vbond , 3 vsmart (vs1,vs2,vs3)

now tell , vs1 having how many omp session , how many controll connections .

25)Assume you have 2 DC , 2 Branches , 2 ISP and each DC and Branches

having 2 vEdges . you have 1 vManage , 1 vbond , 3 vsmart (vs1,vs2,vs3)

assume that BR1 and BR2 are in different sites ( 300, 400 )

then BR1-vE1 having how many omp peers, how many control connections

and how many ipsec tunnels .

b) if both the branches having same site-id then :

then BR1-vE1 having how many omp peers, how many control connections

and how many ipsec tunnels .

++++ CCNP SDWAN related Documents from here ++++

Cisco SDWAN Part 01 – Day 01 Document below :

Day01 – SDWAN Deployment Steps :-

Cisco SDWAN PnP Guide : –

Cisco CCNP sdwan 300-415 _ part01 –

Cisco CCNP sdwan 300-415 _ part02-U –

Cisco CCNP sdwan 300-415 _ part03 –

CCNP SDWAN sdwan 300-415 _ part04 –

CCNP SDWAN sdwan 300-415 _ part05 –

CCNP SDWAN sdwan 300-415 _ part06 –