Basic introduction to BGP - Ft. MikroTik ROSv7
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- Опубликовано: 24 июл 2024
- 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.
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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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Some useful links to help supplement with the vid:
en.wikipedia.org/wiki/Border_Gateway_Protocol
www.arin.net/resources/guide/asn/
en.wikipedia.org/wiki/Internet_exchange_point
MikroTik BGP configuration Links:
help.mikrotik.com/docs/display/ROS/BGP
wiki.mikrotik.com/wiki/Manual:Routing/BGP
wiki.mikrotik.com/wiki/Manual:BGP_HowTo_%26_FAQ
wiki.mikrotik.com/wiki/Manual:Simple_BGP_Multihoming
If I see correctly, the wiki articles are for ros6 as they still use bgp peer, network etc :-(
@@foobar715 Both ros6 and ros7 is here, please use
help.mikrotik.com/docs/display/ROS/BGP for v7
@@TheNetworkBerg Thanks for your videos, could you please make or post a new video using the BGP with ipv6 and filters, please
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
This video was just Awesome! Thank you very much for sharing your knowledge!
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....
Good morning from Nigeria. I love your videos. You take out time to explain and our videos are crystal clear.
Glad you like them! Thank you for the nice feedback :)
Nice video, and thanks a lot for BGP configuration on the two RouterOS versions
Your too modest
Thank you for this video!
Mesmo não sabendo inglês consegui configurar ,thank you very much ,so liked watching your video.
Good intro to BGP, little they know that BGP carries a ton of other protocol families :)
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.
Hehehe, that is such a huge coincidence :D! Hopefully these videos help you out somewhat!
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 :)
Good luck with the MTCRE, I know you can do it!
Thank u sensie.. :)
looking forward to ROS v7 BGP filtering :)
great, thanks a lot
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.
Thanks.
yes sir, do another next video for BGP
You can explain BGP in a few minutes way better than all of these boring cisco tutorials
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
Definitely, the plan is for the next video to cover Route Filters with BGP :)
This is amazing, thank you! By the way, where is your accent from? South Africa/Zimbabwe by any chance?
Hi Robert, yes I am a South African. Thank you for the kind words
I'd love to have you make some videos on starting a small WISP from scratch.
Methods on how to 'link' with main supplier, L2, L3. Layout. How to setup core router to distribute internet. How to give clients shared or specific public IPs through PPPoE from your allocated public block range. And other ISP related stuff like monitoring, tips and tricks, best practices, legal requirements like here ICASA. Almost all videos on YT regarding this subject is in other languages, I could not find any usefull videos in English on this subject. Sal dit baie waardeer.
Can you do bgp configuration on a ubiquiti edgerouter infinity?
Can you do a video on connecting Mikrotik BGP to a Linux system running FRR? This should be simple but its proving virtually impossible to get Mikrotik and FRR to talk to each other. (ROS v7.2.3)
Thank you for all your videos.
I have a off topic question.
How did you get your winbox to display all text perfectly in Linux.
I have been having issues with this for a very long time and cant seem to get it fixed.
I'll be honest, my winbox just looks like that. No special tweaking has been required from me, might be a distro or winbox issue for your distro, though I think it should all work the same if we're all using wine.
How to peer BGP loopback i see on Os6 is ready to use but os7 not this function please help
Hi sir, can you make a video of BGP from our Internet Provider to our Mikrotik Router Public IP address. thanks and more power
I am having trouble configuring MikroTik pppoe server in RB 3011. Please help
why does 03 gets 5 prefixes? in 01's address-lsit are only 3 prefixes defined and 02 to 03 is not configured? or missed i something?
I think we should learn BGP before all other protocols
hi sir how to contact you to set up my bgp?
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.
There are Input and Output Affinity values that you can tweak in the "Extras" tab of a BGP connection. You can read more about how the multi-core routing process works from here:
help.mikrotik.com/docs/display/ROS/Routing+Protocol+Multi-core+Support
Bgp Filter v7 please. Prepend, Local Preferece, Community, MED.
can BGP be applied or used a simple mikrotik router or a CHR version? on your house?
BGP can be applied anywhere, what are you trying to achieve?
@@TheNetworkBerg Just wanna try it on my PC router box...
does it need some high end router from mikrotik to use or apply this..with specific specs.. or hardware
how do you apply synchronization in router os v7. I could not figure out that in the video.
in a situation where you wish to advertise route without validation from the routing table.
The synchronize option does not exist in v7, there is however a workaround. You can read about it in this post on the MikroTik forums:
forum.mikrotik.com/viewtopic.php?t=184856
@@TheNetworkBerg thanks so much. I'm implementing bgp as an emerging isp tomorrow.
Again thanks, appreciated.
are the avertised routes available on edreouter infinity
They remain there for as long as your peer is advertising them. If the peer goes down or they implement a route filter to stop advertising something then you will stop receiving a route
Can i get your emulator on which you are doing lab
after i updated from 7.3 to 7.5 my internet speed went down from 150mbps to 50mbps
now october 2022 BGP problem still exists
I cannot sign presenters like this
filters :D