Network lab basics (router and switching)

#1

in networking lab router and switches , i am stuck in q9 , i did exactly as hint suggested

step1 : i added 172.16.238.10 to app01 and app02 via sudo ip addr add 172.16.238.10/24 dev eth0
step2 ; same for app03 and app04
sudo ip addr add 172.16.239.10/24 dev eth0

now after checking and moving to next question all the existing ip address will be removed in app01,02,03,04 except default and what we assign above

after that i added 239 ip to host jump server

now we can ssh app03,app04 again

till here everything ran smoothly

on question 9
what we did , we added route to app01,02 via 172.16.238.10
command used in app01,02 : sudo ip route add 172.16.239.0/24 via 172.16.238.10

in route table though in gateway column field it is not showing ip addr in place it is showig jump_host.devops when ran a route command to both app01,02

in app03,04 the command ran:
sudo ip route add 172.16.238.0/24 via 172.16.239.10

routte : when did route here it is showing in gateway column as ip addr format and showing 172.16.239.10

in jumphost also while checking network intferace is enable the output for cat command is 1

now when pinging from jump host each app is getting connected

but when pinging from inside app01,02 to app03,04 , the ping is in stuck state and

when pinging from app03,04 to app01,02 it is giving nework unreachable

what should i do next , i am stuck in last question 9 and need solution

i will again try after sometime and check interface is up or not and will paste route and commands for more details i have explained in words what i ran and got till now

#2

Read the solution carefully; app01 and app2 need one set of commands, and app03 and app04 need a slightly different command since they are on a different network. But the solution works fine – I just tried it.

#3

It is solved now , i did not know why it did not worked before i did exactly the same thing , anyway i will move to next , it was a wonderful session all the basics got cleared for me regarding routing and switching . Thank you for your reply.