I need to break a huge backbone network into a ring with stubby networks. In all these examples no one is redistributing connected (as type 1) or static routes (as type 2) under the Instance tab which I have always done before. When I stop redistributing the network stops routing. Why aren't you redistributing?
This really depends on your network setup and what you are trying to achieve. If you use OSPF only as an IGP to run services like MPLS off of with BGP signaling then it's rare to redistribute routes. Though if you build your entire network just off of OSPF to learn routes then typically you will redistribute routes between different routers. Of course the network stops routing when you stop redistributing because your router is no longer advertising those routes in it's routing table. You could always add the networks as "Networks" in your OSPF configuration. As for the Stub / NSSA networks I don't have any videos on that since it's more or less a niche requirement, but once I have time I can look at creating content involving those types of networks. You are of course welcome to check some of the earlier live streams on this channel where we do a bit more with OSPF than just doing the basic configuration.
@@TheNetworkBerg Thanks! I appreciate the response on a two year old video. Really appreciate the expert advice. I've had OSPF running for a few years, but now the network is getting big enough that I am losing optimization. Almost 1200 routes propagated. I think I need to look at iBGP for help.
Ah I see, well you could try and cut down a bit on your route advertisements by only advertising summarized routes. An example would be if you assign IPs from a specific network/pool on a router you can rather opt to send the lowest prefix. Example: What I am currently advertising (via redistribution) 10.0.0.0/30 10.0.1.0/29 10.1.2.0/24 10.50.50.0/22 10.100.100.128/25 10.1.1.0/24 10.88.44.0/25 10.88.44.128/25 10.90.77.0/24 10.90.50.0/24 This means that all my neighbors will receive route information for all these destinations, if I just disable redistribute-connected and add 10.0.0.0/8 as a network then I will receive a single route instead of multiple routes in the same network. I hope this explanation helps a little bit.
Hey George, I was using GNS3 in this video. I can however recommend using EVE-NG, the community edition is completely free and you can emulate a vast number of different vendors. Please go through the playlist below for instructions on how to set this up :) ua-cam.com/video/uEH3IN1295k/v-deo.html
Hi Michael, I basically used a "Cloud" interface in GNS3 where I had a Virtual NIC that can communicate with the topology directly. This allows me to Winbox to Mac-Addresses and IPs in the topology. I have since moved from GNS3 to EVE-NG as the effort to connect to your virtual LAN is a lot simpler and EVE-NG offers a lot more nice things. GNS3's new Web client has nothing on the EVE-NG Web client and it looks so professional even on the community edition which is completely free.
Hi Jablo, this is a basic configuration of OSPF. If you're up for it you are welcome to watch the videos on my free MTCRE course that covers the protocol a bit more in-depth: OSPF Intro: ua-cam.com/video/ypWdDnBxJdk/v-deo.html OSPF Areas: ua-cam.com/video/3MsWuvdMRx4/v-deo.html OSPF Misc: ua-cam.com/video/I6xTMjN_0rg/v-deo.html I also did some awesome stuff with OSPF in my live streams using it as an IGP for an "ISP", you can watch my live streams on this playlist, though they are a bit lengthy: ua-cam.com/play/PLJ7SGFemsLl3nVZ7c-IoeZgR5VDZPKq6d.html
Good introduction to OSPF. 8:32 Please teach ppl to use a RouterID as 10.255.x.x 8:32 Please not teach stupid Apply+OK when OK = Apply + Close Window and only OK is ok to be press, OK? If you say why you use ptmp who not do election of (B)DR then this will be more perfect video.
Excellent!
Good work! Keep it up! Waiting for next level ospf configurations! Thanks !
Hi Berg, Good Morning if you don't mind could you help guide and explain me about IPSec + OSPF (Hub and Spoke) 1 HQ and 2 Brand Fortinet + MikroTik.
How can i advertise static default route to the ospf
what's the difference between Network Type broadcast and ptmp. as per video at 13:49
have you tried pfSense ospf to Mikrotik?
No but it should work just fine, OSPF is more of a standard than a vendor specific thing.
@@TheNetworkBerg Thanks looking forward to your next videos on pfSense to MikroTik via OSPF. ^^,v
Well done!
I need to break a huge backbone network into a ring with stubby networks. In all these examples no one is redistributing connected (as type 1) or static routes (as type 2) under the Instance tab which I have always done before. When I stop redistributing the network stops routing. Why aren't you redistributing?
This really depends on your network setup and what you are trying to achieve. If you use OSPF only as an IGP to run services like MPLS off of with BGP signaling then it's rare to redistribute routes. Though if you build your entire network just off of OSPF to learn routes then typically you will redistribute routes between different routers. Of course the network stops routing when you stop redistributing because your router is no longer advertising those routes in it's routing table. You could always add the networks as "Networks" in your OSPF configuration.
As for the Stub / NSSA networks I don't have any videos on that since it's more or less a niche requirement, but once I have time I can look at creating content involving those types of networks. You are of course welcome to check some of the earlier live streams on this channel where we do a bit more with OSPF than just doing the basic configuration.
@@TheNetworkBerg Thanks! I appreciate the response on a two year old video. Really appreciate the expert advice. I've had OSPF running for a few years, but now the network is getting big enough that I am losing optimization. Almost 1200 routes propagated. I think I need to look at iBGP for help.
Ah I see, well you could try and cut down a bit on your route advertisements by only advertising summarized routes. An example would be if you assign IPs from a specific network/pool on a router you can rather opt to send the lowest prefix.
Example:
What I am currently advertising (via redistribution)
10.0.0.0/30
10.0.1.0/29
10.1.2.0/24
10.50.50.0/22
10.100.100.128/25
10.1.1.0/24
10.88.44.0/25
10.88.44.128/25
10.90.77.0/24
10.90.50.0/24
This means that all my neighbors will receive route information for all these destinations, if I just disable redistribute-connected and add 10.0.0.0/8 as a network then I will receive a single route instead of multiple routes in the same network. I hope this explanation helps a little bit.
Thank you for making this video. What application did you use to create this simulation?
Hey George, I was using GNS3 in this video. I can however recommend using EVE-NG, the community edition is completely free and you can emulate a vast number of different vendors. Please go through the playlist below for instructions on how to set this up :)
ua-cam.com/video/uEH3IN1295k/v-deo.html
Does vlans do the same
This configuration can work smooth to 40 clients pppoe?
I want to set up
1 hex for ISP ospf setup to RB4011 for pppoe working.
How did you get your winbox to connect to gns3?
Hi Michael, I basically used a "Cloud" interface in GNS3 where I had a Virtual NIC that can communicate with the topology directly. This allows me to Winbox to Mac-Addresses and IPs in the topology.
I have since moved from GNS3 to EVE-NG as the effort to connect to your virtual LAN is a lot simpler and EVE-NG offers a lot more nice things. GNS3's new Web client has nothing on the EVE-NG Web client and it looks so professional even on the community edition which is completely free.
What about vlan
Is this basic to advance?
Hi Jablo, this is a basic configuration of OSPF. If you're up for it you are welcome to watch the videos on my free MTCRE course that covers the protocol a bit more in-depth:
OSPF Intro:
ua-cam.com/video/ypWdDnBxJdk/v-deo.html
OSPF Areas:
ua-cam.com/video/3MsWuvdMRx4/v-deo.html
OSPF Misc:
ua-cam.com/video/I6xTMjN_0rg/v-deo.html
I also did some awesome stuff with OSPF in my live streams using it as an IGP for an "ISP", you can watch my live streams on this playlist, though they are a bit lengthy:
ua-cam.com/play/PLJ7SGFemsLl3nVZ7c-IoeZgR5VDZPKq6d.html
3:10 if you operate 1000 routers within the same broadcast domain, OSPF is the last of your concerns...
Ospf uses multicast
@@thegorn OSPF, yes, that's why it is the last of your concerns.
Good introduction to OSPF.
8:32 Please teach ppl to use a RouterID as 10.255.x.x
8:32 Please not teach stupid Apply+OK when OK = Apply + Close Window and only OK is ok to be press, OK?
If you say why you use ptmp who not do election of (B)DR then this will be more perfect video.