Join David Bombal for an in-depth discussion in this video Cisco router using a dnsmasq DNS server, part of Practical Linux for Network Engineers: Part 2.
- [Instructor] So here's the router.…Can the router ping router one?…Yes it can in this example.…Can it ping Ubuntu server?…No it can't.…And to the moment notice,…the DNS resolution is going to 192.168.122.1.…The router can't resolve this address, however,…and it can't resolve docker two.…So, IP domain lookup.…
IP name.…Server 10.1.1.200.…Ping Ubuntu server.…Still doesn't work.…So what I'll do here is shut this interface down,…to force the router to use the…Ubuntu virtual machine DNS server.…So all I'm gonna do is shut the interface down…and then no shut it.…
So ping Ubuntu server,…notice the ping now succeeds,…because the domain name is being resolved…by DNS mask and is being resolved correctly.…In the mean time an address is being allocated…through DHCP, but the router can still ping…the Ubuntu server because…the DNS server now used is DNS mask.…Can it ping router one?…Yes it can.…
Can it ping docker two?…Yes it can.…So, resolutions are taking place correctly.…Add to the moment of the Ubuntu client PC…is using dynamic addresses,…
Note: This course uses GNS3 for all demonstrations.
- Configuring TFTP, dnsmasq, and DHCP
- Replacing GNS3 switches with Linux switches
- Creating a Docker-based network with OVS
- OpenFlow capture using Wireshark
Skill Level Intermediate
Practical Linux for Network Engineers: Part 1with David Bombal4h 8m Intermediate
1. Linux Fundamentals: Software Installation
2. Put Linux to Work: TFTP Server
3. Put Linux to Work: DNS Server
4. Put Linux to Work: DHCP Server
View address leases1m 19s
5. Put Linux to Work: Linux Switch
6. GNS3, Docker, Open vSwitch, SDN, OpenDaylight, and OpenFlow
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