Configure OSPF Virtual Link Transit Area on MikroTik RouterOS

[Music] hello everyone and welcome to this mahidol here again we go now to lap number 11 and it's gonna be about the virtual link that I have just explained in the previous lecture okay the virtual link will have two laps this is lap 11 and then also will have lap number 12 and that's for the discontinuous areas okay let's first see what is our lab diagram and then we go through those pawns to make them one by one as always here is our lab scenario as you can see is the same as the last lecture we have area 0 and area one in our area 2 I have just added here the IP addresses and our mission will be here that we have to make virtual link an area 1 to be a transit area in order to allow area tool to be connected to the backbone area because at this moment you can see there is no any connectivity or any ABR I would say between area 0 and area 2 to be able to be connected to each other ok so this is what is the mission of the lab here and let's go now and go through the points to see what we have to do so here is our lab before I start going through the points let me just first put deluxe Ananya over here then you can follow it on the top right of the screen ok point number one all hi P addresses are already configured as photograph with their British interfaces so what I've done also on top of this I have just added also the bridge interfaces on each of the router so the other one has an IP as like it's a connected network just to now when we share routes on as we have that they can see the networks of router 1 or router 2 or 3 or 4 so as we always make it the bridge interface of a lot one is one 1.1 1.1 1.1 1 2 is 2 2 2 2 33 33 and 4 router for is 44 44 ok I also created this on the lab but it's not shown here in the picture and I think you can manage to follow it so portable to enable OSPF on all routers as per the graph and assign the proper router IDs let's follow it one by one okay I go first to router 1 and now we see the Trotter one has one interface which is internet one it's on area zero and it has the bridge interface also its own Ethernet 0 will have a low SPF I go to routing or SPF instances and then here we go to the router ID I put the router ID and then I'm going to label the networks so because router 1 has all the interfaces on the backbone area so I'll just say all on backbone area okay so this is router 1 done router to go to routing and then to SPF we put the router ID to the window to the tool and here we have router 2 has on area 0 Ethernet 1 and on area 1 Ethernet to and then always the bridge I will put them on area for example router - I will put it on area up 1 ok now to see I'll put the bridges on area 1 and not before I'll put it on area - okay now let's create first the areas for router 2 because he has also he's an APR so he has already a one also so it's 0 2 0 0 at 1 you can put the area ID whatever you like I just put it 0 - 0 - 0 that one ok and now we have to say that the networks 192 168 dot 1 to the 0 or router 2/24 it is in the backbone and then the network 192.168.1.0 slash 24 is on area 1 and the bridge interface 22:22 92.0 - 24 is an area one ok now we should have a neighbor with rot one already yeah we do let's go to router 3 and routing OSPF put first the router ID because that's needed for the virtual link also okay and then a router 3 has on area 1 and then 2 so we have to create area 1 and area - and then the network's 192 168 - 3.0 flash 24 that's gonna be on area 1 I'll put also the bridge interface the this reader 30 single so to see that's 0 plus 24 output also an area 1 and then the network one night - once you save the 34.0 slash 24 it is on area - and finally router for routing OSPF we put the router ID for the photo 4.4 and then we have only area - so I just create a new area here area to area ideas area a tool and then we go to networks and we put everything in area - so a lot of for has eaten at 3 1 at once a 3 for network and the the bridge interface on area - okay so now router for has to form neighbor ship without the 3 that's fine and then router 3 has to form neighbor ship with router for and router - that's ok and router 2 has to form ready neighbors with rotten 1 and router 3 and then finally the other one would form they worship with Rotter tube that's fine so we have configured properly the OSPF as required Poornima Street check the routing table in each router do you see any problem let's see if I go to router 1 now and I look here with side the routes I will see that router 1 is able to reach the outer - and the router 3 but not the network of one item s 8.3 4.0 and which is on area 2 and also the bridge of router for as well so if we look here in the graph another one is able to see this network because it's connected to it and then the bridge interface of router - and then this network and then the bridge interface of router 3 but is not able to see this network here and not also the bridge interface of router for or let's say the network here when I say the bridge interface I mean the network which the bridge interface is related to ok so we have a problem that router 1 is not able to see anything from area - ok and in the reason because area - doesn't have any connection with area 0 and there is no any ABR de 22 años okay if we look again now - let's let's see - router for and then also rata for if you look here in the route also we can see that Rashidah connected the network - wait you see the router 3 and the network of router 3 and then also the bridge interface of router - ok so indeed will have a problem the problem is that router 1 over here is not able to reach anything in area 2 and also a 2 is not able to reach anything on the backbone area normally that's the proper because there is no ABR in between this is ok check fix the problem by creating the virtual link check the routing tables now is it ok so if we go here again I clean a little bit here so what we need to do we need to allow the area to to be connected to the backbone area and we have said that we have to create something we call a virtual link so the virtual link will be over here and as I said in the explanation that is like a tunnel whereby the traffic would be from area 0 to area 2 passing through this tunnel and there will be like connected to each other ok so because there is no ABR in between we make the virtual building in place ok so that's what we need to do now to create the virtual link as I said before in this case we need to have one router which is the ABR up connected to the backbone and another one so router which is also connected to the transit area and the other area from where we need to get the D routing from for example in this case we have this one as debut our it is a br and let's connected to the backbone area which is very good and he's an AVR and also connected to the area which is the transit but also here route 2 3 as well as connected to that area and to here then in this case we can create the virtual link on those two routers router 2 and rapidly so let me now just obtain to you how you can do that I will go to router 2 and then we go to virtual links okay and here is a router two virtual links and then I click plus and here I have to put the neighbor ID in our case the neighbor ID will be the router ID of router 3 because if we go back to this picture we are doing the virtual link between router 2 and router 3 that means that router 3 here is the neighbor ID and here is the router idea of router 3 which is we know it already is 3 2 3 2 3 2 3 ok so that's why I told you we need to know what is the router ID don't want to configure it visually and then we put the transit area in this case is area 1 ok that's it so that's the part of router 2 we need to do the same on router 3 so I go to router 3 and then I go to brush or links here as inside the OSPF then i've created our say the neighbor ID is to the to the to the 2 and the transit area that i would like to have is area 1 okay based on our diagram and here we go now if I go to a router one now and we wait a little bit directly you can see directly showed now the network which is the bridge interface connected to it 44 that 44 44 to 0 and that's on the router for okay so also it is now CD one night was a it was three 4.0 okay and if we go now to router for there we go also to routing OSPF and then also rather for is able to reach the networks of router 1 point number or is done so the drug table is okay now to secure the virtual link put a password with md5 so if we look here again when we were doing the virtual link it was without any password and that's some type of security issue that we may face that's why we can also on mikrotik put a password so the neighbor routers which are doing the virtual link together they should match the same password in order to form the virtual name okay to do that we have to go to a lot of two again and inside virtual link that we have created if we double click on it you can see here we have authentication and you have three types none which we have it now there is no password simple you put a password but it's clear tags that means is not encrypted it is better than none but still if someone is able to capture the traffic of our staff you can see the password the best to do is to put md5 okay so you put md5 and you put the password for that one two three four five six okay that's from one side the second side we have to go to a router see but before I do that let me show you that because we have put the password then now directly the virtual link is down and the router one is not able to get any more derives from the area - okay so we have to go to router 3 and we have to do the same we go here and we put it here md5 and we put 1 2 3 4 5 6 ok and ok and then we go now to rattle one in the routing table in a moment we have to see now that the networks which are an area to will be seen on router 1 ok here we go we can see that they showed up directly so the authentication has match and then the virtual link is again up it's working and then in this case rather one can see the network of area 2 so to secure the official they put a password with md5 we have done that and check if all are shown again yes that's how we can configure a virtual link on magnetic routers is very easy it's only that you need to understand the concept of virtual link why we need it and where we have to apply it and then the accommodation is just as simple as you have seen now okay so this lap number 11 is finished now we have to go to lab number 12 that's also about the virtual link but for this continuous areas I hope that this lab has been informative to you and I'll see you in the [Music]

Channel: MAICT Consult

Views: 2,624

Keywords: Mynetworktraining, OSPF, Virutal link, MikroTik OSPF, MTCNA, MTCRE, mikrotik ospf point to point, mikrotik ospf load balancing, mikrotik ospf configuration, mikrotik ospf failover, mikrotik ospf example, mikrotik ospf tutorial, mikrotik ospf default route, mikrotik ospf setup, mikrotik ospf priority, mynetworktraining.com, Maher Haddad, mikrotik ospf nbma

Id: EZR-xgQI_iY

Length: 14min 4sec (844 seconds)

Published: Mon Aug 06 2018