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Exam EX200 topic 1 question 48 discussion

Actual exam question from RedHat's EX200

Question #: 48
Topic #: 1

[All EX200 Questions]

SIMULATION -
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server. How will make successfully ping to 192.168.1.0/24 Network's Host?

Show Suggested Answer

Suggested Answer: See explanation below.
vi /etc/sysconfig/network GATEWAY=192.168.0.254

OR -
vi /etc/sysconf/network-scripts/ifcfg-eth0 DEVICE=eth0

BOOTPROTO=static -

ONBOOT=yes -
IPADDR=192.168.0.?

NETMASK=255.255.255.0 -

GATEWAY=192.168.0.254 -
service network restart
Gateway defines the way to exit the packets. According to question System working as a router for two networks have IP Address 192.168.0.254 and
192.168.1.254.

by STFN2019 at Sept. 22, 2021, 1:35 p.m.

Comments

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cookieb

Highly Voted 1 year, 5 months ago

nmtui -> edit connection -> routing <edit> -> add route much easier to remember

upvoted 6 times

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STFN2019

Highly Voted 2 years, 7 months ago

Question unclear, propably just to setup a default gateway for connection to work between these 2 networks, fair enough.

upvoted 5 times

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Hmenu0s

Most Recent 1 year, 9 months ago

Assuming the default gateway here is different and we need to add additional route to reach the 192.168.1.0/24 network. # get the connection holding the ip of 192.168.0.0/24 network ip -br a nmcli con show # Ping the router ip to check connectivity ping 192.168.0.254 # Add a permanent route to 192.168.1.0/24 via 192.168.0.254 on the connection identified above. in this example that connection is static-enp0s3 sudo nmcli con modify static-enp0s3 +ipv4.routes "192.168.1.0/24 198.168.0.254" sudo nmcli con up static-enp0s3 # check the routes and test the connectivity ip r nmcli con show static-enp0s3 | grep routes ping 192.168.1.254

upvoted 2 times

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AbidBajwa

2 years, 6 months ago

I think we need to allow IP Forwarding to allow traffic to access each other. sysctl -w net.ipv4.ip_forward=1

upvoted 5 times

wizojlo

1 month, 2 weeks ago

True, it is about IP forwarding, but above solution will not survive reboot. echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.d/ipforward.conf sysctl -p reboot sysctl net.ipv4.ip_forward (to verify; should return a value of 1)

upvoted 1 times

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