Learning SD-WAN with Cisco: Transform Your Existing WAN Into a Cost-effective Network

© Stuart Fordham 2021

S. FordhamLearning SD-WAN with Cisco https://doi.org/10.1007/978-1-4842-7347-0_14

14. Troubleshooting

Stuart Fordham¹  

(1)

Bedfordshire, UK

 

This chapter is a collection of basic troubleshooting steps, as well as looking at some of the issues I came across while writing this book.

Basic Troubleshooting Techniques

Pinging

Ping is a great way to confirm basic connectivity. The gotcha is that when pinging, we must specify the VPN to use:

vManage01# ping 100.1.1.3 ?

Possible completions:

  count      Number of ping packets

  fragment   do(prohibit fragmentation, even local one),         dont(do not set DF flag)

  rapid      Rapid ping

  size       Size of packets, in bytes

  source     Source interface or IP address

  vpn        VPN ID

  wait       Time ...