Calico Routing Modes

[@轻舞飞扬-p2r]

Best vedio about calico i have ever seen, solved many confusions of my understanding about calico.

[@parimi001]

This is one of the best videos I have ever watched!

[@JayakrishnanChathu]

Superb video. Speed of the video, demo in detail and dump of wireshark output made it very clear. Thank you.

[@eldarmustafayev7782]

the best video about calico routing

[@深夜酒吧]

i listen to your video and fall asleep quickly, after wake up finish this video... what a good video indeed!

[@minhthinhhuynhle9103]

Learned alot, thank you Josh. What an underrated video

[@anthonymiloslavsky2295]

Stumbled upon your video after reading the write-up on your blog on this topic. Super useful. Thank you.

[@badbgp]

Best Calico vid I've seen

[@SteveProXNA]

Awesome video with great explanation between IP-in-IP and VXLAN for Calico Routing Modes - thanks!

[@mkp4373]

This is the perfect explanation on Calico networking. Thanks, octetz!

[@taylorkee257]

Great explanations! Thank you very much!!❤

[@sukki151190]

Very Nice . It is absolutely crisp and clear.

[@FirkraagAurel]

Great teacher and great explanation(s) of calico CNI and routing modes! Thanks mate.

[@edua_tech]

You´re great! Thx for your help with k8s topics! Regards from Guatemala!

[@888fatma]

Very good video. You explain the concepts very well and the illustration and captures serve well. Thank you. More videos on k8s networking please

[@elspuddo]

I enjoyed this video and got a lot out of it, thanks! I really liked the way you leveraged tmux in the terminal as part of your CLI demonstration too. Looking forward to implementing Calico direct routing in my home test cluster.

[@ullaspalangatt774]

best calico routing video yet 👌 ..it will be better if some info on overlay is added

[@eranac6562]

Excellent lecture! Thank you

[@othiagolinhares]

you sir, have got some GREAT teaching skills!

[@BJHzlz]

Awesome video. Please, please keep working out more videos like this.

[@bartoszratajczyk4945]

Thanks! Great video! I will share that with my colleagues!

[@Digalog]

Great explanation. thank you sir

[@ongeri]

This was so useful, please make more networking tutorials for developers.

[@ellouzefarouk6741]

really really good explanation!!

[@ALKT101]

thanks for sharing. learned a lot

[@EduardKhiaev]

Superb, thank you so much!

[@seshagirik4066]

Thanks a lot for sharing it. Very helpful

[@Kaiwa1234]

Great video. Learned a lot!

[@sassynatan]

U explain amazing!

[@x13years]

Good stuff!!

[@HUCERBH3947]

great video very informative, can you do another one on how to put firewall appliance to filler inter node communication, thanks

[@liapengpeng5025]

Hi Octetz, Just one question, Without bgp in vxlan mode, how can the nodes learn the routes of the pods?

[@Alex-ck4in]

Incredible lesson. One thing I missed was the reasoning for using VXLAN instead of IPIP or mixed IPIP? What do you gain/lose by doing L2 encap rather than L3?

[@charlesearle2055]

I'm still learning as well so take this with a grain of salt but some CNI implementations use the Linux l2 bridge and others (Like Calico) turns the node into an L3 router so you'd need to support both layers.

[@jayakrishnannair4175]

Great video explaining the internal of calico overlay modes.While output of calicoctl node status, show state as start and info as passive. What does that mean? What would be the possible route cause?

[@trungucle8526]

enjoy it. Good material

[@carancumar29feb]

In Direct mode, the natOutgoing is set to true, but the capture showed pod ip's as source. Shouldn't this be source node ip?

[@tansonmedia8960]

great job !!!

[@pigua7705]

Hi, you are great! My friend, what software did you use to make screenshots?

[@RezwanRahman]

its very important video

[@kb4580]

good job, thank you !

[@HUCERBH3947]

What is the terminal you use?

[@nileshgore5499]

very nice detailed explanation also on the post, Thank you ! I am having one issue in the lab. after changing to - ipipMode: Never, when I ping from pod-1 in host 1 to pod-2 in host 2 (both hosts in same subnet), the source IP address is seen as IP address of host 1 interface instead of pod-1 IP address. Any advice on this ?

[@nileshgore5499]

resolved checked the NAT table on the node using - "sudo iptables -t nat -L" and found "MASQUERADE all -- 172.17.0.0/16 anywhere" The command "firewall-cmd --add-masquerade --permanent" was issued during the k8s node setup I now issued the command to disable masquerade - sudo firewall-cmd --remove-masquerade pop to pod traffic between different hosts now uses pod IP.

[@srinumanthena]

Hi, thank you for the explanation. Do you have to open any firewall for pods 1 and 2 to communicate with pod3 which is in a different subnet?

[@fastpost5068]

There are a few k8s ports and 2 other for calico that should be open. This what I think but this gentleman could give us better info.

[@rougearlequin]

What about a video about installing calicoctl? :)

[@HUCERBH3947]

BGP Reflector video is gone, can you please re upload it? thanks

[@scetamit2555]

Good info on WHAT Calico does in various modes but its missing details on HOW.

[@rezarahim4808]

Awesome

[@erikajoeplummer9470]

I don't recognize your diagraming software. What is it?

[@PePTo-dx2yj]

Ty, very usefull video, now I have k8s 1.24 and how and where I can set Direct mode, because seems to me I have only two option ipip and vxlan, If somebody now give link)) ty

[@johnclarkon369]

Felix basically is an agent between BGP daemon and Linux kernel. BGP learn routes =route info base(RIB) Linux kernel forwarding table=FIB packets move cross nic card using FIB. RIB is a reference for how to build routing table. But without inserting to kernel Fib is not there. So net not working. Even you got BGP table information. Other implementation like quagga. Frrouting basic same logic. BGPd+zebra(logically = Felix) Gobgp+goplane For hardware perspective like Cisco Rib=show ip route. Show BGP ipv4 unicast...etc Fib=show ip cef Cef is Cisco version fib for they hardware. So final Networking guy think RIB is controlplane. Hardware box. Sup engine FIB is dataplane hardware box line card Yeah....

[@DioXin]

What about bgp

[@johnclarkon369]

And....a little bit...word from network guy perspective. Outer is underlay Inner is overlay... Encap thing like GRE tunnel IPSec tunnel MPLS VPN Vxlan tunnel Whatever...it’s all the same theory... Yeahhhhhh.

[@johnclarkon369]

Real Network guy love BGP. But most networking guy doesn’t. Cuz there can’t handle BGP. They only can play staticroute... Most of them.

[@valdomasuero9029]

Thanks!...really clear the information!.....