Lab : Network Basics Q11

hi

in Lab Networks basics Q 11 :waffle:
While we are at it, there is also a missing default route on the server devapp01 .
Add the default route via eth0 gateway.

There is hint as below " sudo ip r add default via 172.16.238.1 "

Query

My understanding of this problem as below . The devapp01 server is having 3 interfaces as below

eth0 : 172.16.238.10
eth1 : 172.16.239.10
eth2 : 172.18.0.4

Q1 . How do you know where is IP 172.16.238.1 is configured in the network ?
Q2. Why do you think route needs to be added to 172.16.238.1 and not to 172.16.238.10 which IP address of the eht0 ?

I added route to .10 instead of .1 and it works . below is my working.

bob@devapp01:~$ ip addr | grep -i .1
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    inet 127.0.0.1/8 scope host lo
14: eth1@if15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:10:ef:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.16.239.10/24 brd 172.16.239.255 scope global eth1
18: eth0@if19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:10:ee:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.16.238.10/24 brd 172.16.238.255 scope global eth0
20: eth2@if21: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:12:00:04 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.18.0.4/16 brd 172.18.255.255 scope global eth2
bob@devapp01:~$ 
bob@devapp01:~$ ip addr | grep -i 238
    inet 172.16.238.10/24 brd 172.16.238.255 scope global eth0
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ ip addr | grep -i eth0
18: eth0@if19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    inet 172.16.238.10/24 brd 172.16.238.255 scope global eth0
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ sudo ip r add default via 172.16.238.10
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ 
bob@devapp01:~$ cat /etc/hosts
127.0.0.1       localhost
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.16.238.10   devapp01-web
172.16.239.10   devapp01
 172.16.238.187 caleston-lp10
172.16.239.10   devapp01
172.16.238.10   devapp01
172.18.0.4      devapp01
bob@devapp01:~$ 
bob@devapp01:~$ ping caleston-lp10
ping: Lacking privilege for raw socket.
bob@devapp01:~$ 
bob@devapp01:~$ sudo ping caleston-lp10
PING caleston-lp10 (172.16.238.187): 56 data bytes
64 bytes from 172.16.238.187: icmp_seq=0 ttl=64 time=0.172 ms
64 bytes from 172.16.238.187: icmp_seq=1 ttl=64 time=0.079 ms
64 bytes from 172.16.238.187: icmp_seq=2 ttl=64 time=0.087 ms
64 bytes from 172.16.238.187: icmp_seq=3 ttl=64 time=0.091 ms
^C--- caleston-lp10 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.079/0.107/0.172/0.038 ms
bob@devapp01:~$ 


Hi @ppnehe , do you still have doubts about this?

Regards,
Vitor Jr.
KodeKloud Support

not able complete the task on Network Basics Q11

Can anyone please help me here.

I have the same problem, unable to solve this question. please anyone help me out

Can you describe the problem you are having? There are hints and solutions in many of the labs, have you checked these? If you provide a link to the lab I can take a look.