Basic introduction to BGP - Ft. MikroTik ROSv7

Hey there friends, hope you guys have been doing well. Sorry for being a bit AFK, but just been really busy. I've made an updated video on what BGP is, what its uses are and how to configure this on ROSv6 & ROSv7. This is truly a powerhouse of a protocol and I love every chance I get to work on it! I hope this video will help demystify BGP at least a little bit for someone who is completely new to it.

❗Help the channel grow by subscribing if you aren't subscribed already! A like is also very appreciated and feel free to leave a comment about what you liked or disliked in the video and what else you would like to see from me :) 👊❗

Timestamps:
📕00:00 - Introduction
📕03:36 - What is BGP?
📕09:39 - BGP Connection States
📕11:47 - What is an ASN?
📕15:54 - Short BGP demonstration
📕18:54 - ROSv7 Changes
📕23:43 - ROSv7 Issues
📕27:24 - Lab Topology
📕29:50 - Lab BGP ROSv7
📕44:31 - Lab BGP ROSv6 to ROSv7

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Thanks again for watching

[TheNetworkBerg]

Some useful links to help supplement with the vid:



MikroTik BGP configuration Links:

[alfonsofringuelli]

You are so brilliant! Thanks for sharing so much information about this awesome topics!,

[jugubitrus]

Good morning from Nigeria. I love your videos. You take out time to explain and our videos are crystal clear.

[hampehwakenabeb]

Hi, I found your channel while learning about Mikrotik recently, and I thank you for providing lots of information on Mikrotik....

I've been labbing Mikrotik v7 (using the latest 7.4.1 CHR) recently, simulating eBGP and iBGP with RR setup, running on dualstack (v4 and v6), and i use loopbacks and next-hop-self for the iBGP peerings. Alas, its iBGP behaviour is unlike any other well-known router vendors. A few things that stick out immediately:
1) an iBGP speaker advertises its loopback address into BGP to its iBGP peer, even though we do not configure a network statement (i.e. address-list) for the loopback on the originating iBGP speaker.
2) the RR reflects the iBGP loopback addresses to all other iBGP speakers by changing its next-hop to itself. This does not cause any issue, because all loopbacks are learned via IGP (i use OSPF), which takes precedence. However, all eBGP routes are reflected correctly i.e. if an eBGP route is learned from an iBGP RR-client (and the next-hop is set to that iBGP RR-client), the RR will reflect the eBGP routes with the next-hop maintained to all other iBGP RR-clients.
3) since v7 no longer discard routes, and a RR reflects any routes learned from a iBGP peer to all other RR clients, including back towards the IBGP client that is advertising its learned eBGP routes, the iBGP RR client sees two sets of BGP routes for the same prefix (1 learned from its eBGP peer, another learned from the iBGP RR)


Because of this behaviour, i had to build specific outgoing route-filters for every iBGP peer on the RR, to make the routing table clean on each iBGP peer....

[keneithnituda]

Another shout out my master hehehe :) learned a lot on you thank you.. and ive been taking my mtcre by next week wish me luck and godbless my best sensei :)

[REBELFUSILIER]

Every time I need to implement something new for a client - BAM! The Network Berg releases a new video related to exactly what I'm doing.

[mdinisoae]

Nice video, and thanks a lot for BGP configuration on the two RouterOS versions

[klebercperes]

This video was just Awesome! Thank you very much for sharing your knowledge!

[Mandroid]

You can explain BGP in a few minutes way better than all of these boring cisco tutorials

[drumaddict]

looking forward to new stuff from you! love this channel ... and learnt some new stuff end gained more understanding to yet known things!! keep it up! this is awesome

[dmnguye]

Good intro to BGP, little they know that BGP carries a ton of other protocol families :)

[thefixitgal]

Your too modest <3 Thanks for being a major help to the community <3

[Nar]

This is amazing, thank you! By the way, where is your accent from? South Africa/Zimbabwe by any chance?

[adrianocolombo]

Mesmo não sabendo inglês consegui configurar , thank you very much, so liked watching your video.

[reynhardprivate]

Want to start my rant with a thank you for the video's i am a big fan of your work.


The major issue a found which is a main reason I can't run this on my core routers as yet is the fact that you can not specify "none synchronized" networks such as in v6,
this makes it very hard when you need to advertise to peers since an existing route needs to exist for that prefix in the routing table or it won't advertise kind of same as in cisco back in the day.
not sure if it's still that way where it requires IGP first before a route is advertised (synchronized).

I have filters setup on my lab to not advertise anything greater than a /24 so in this case I expected it to advertise X.X.X.X/24 and not assume it has to advertise X.X.X.X/32 witch is my loopback address for example since X.X.X.X/24 is the parent network in my prefix list it should be able to figure this out and advertise that maybe there is a way to set a prefix length when the dst is checked but feels like a lot more work than it was prior and feels like more complexity then is needed in simple setups.

Maybe you guys have found a better way around this or my view on networking is entirely outdated.

[allantidalgo]

yes sir, do another next video for BGP

[carlosgonzalca]

Thanks for your videos, could you please make or post a new video using the BGP filters and advanced intermediate functions in RouterOS7. Thank you

[Zulva]

looking forward to ROS v7 BGP filtering :)

[pietergoosen]

Can you do bgp configuration on a ubiquiti edgerouter infinity?

[mjsun]

at 19:28 of the clip, you mentioned that in v7, "you can have a specific core to run incoming bgp...", how to do it ? I didn't find where to config it.