In this video i talk about connecting different sites of customers who are part of different AS (Autonomous Systems). We look at 3 ways to do it via Option A, B & C
This is one of the best explanation i have ever learnt for Option A B C NNIs, I personally request you to please make a training video on SEGMENT ROUTING, Many Thanks
Option A (treating each SP as a CE): 46:59 Option B (ASBRs forming MP-BGP peering with huge vpnv4 tables): 58:40 Option C (RRs forming MP-BGP peering separating Control Plane from Data Plane): 1:17:52
That was very good explanation.. But for inter-as Option-B, i think next-hop-self between R4 & RR and R8 & RR is not required because for bgp vpnv4 family next-hop-self is by default enabled.
@UCpOXXnLw4FQeEPwdItHeGMQ In Option-A, the R4-R8 interface is in VRF Cust-A. So say the route 10.11.11.11 learnt on R4 from R8 appears like a PE-CE route for VRF Cust-A (E-BGP route). On R4, this route then moves from the VRF table to the MP-BGP table. Due to MP-BGP between R4-R3, the route is learnt on R3 with the next hop of R4. In Option-B, R4-R8 already have MP-BGP between them. R4 learns the route from R8 with the next-hop of R8. Thid route is sent as-is to R3 but R3 has no connectivity to R8, hence we use next-hop-self on R4. This way the next-hop changes to R4 as R3 has connectivity to R4. The difference is in option-A, the route becomes a M-BGP route from an ipv4 PE-CE route but in option-B, the route is learnt as a MP-BGP route.
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This is one of the best explanation i have ever learnt for Option A B C NNIs, I personally request you to please make a training video on SEGMENT ROUTING, Many Thanks
You did an excellent job explaining all the options and I especially likes your troubleshooting scenarios.
thats what you call a great teaching technique, much appreciated.. was very easy to absorb Alhamdolellah.. thanks for the good work
Awesome stuffs. Perfectly explained.
You covered a lot and very informative. Thanks a lot.
Awesome Explanation ....Thank you so much
Soooperb explanation..... You made concept crystal clear
Great explanation, keep uploading more videos. Thanks man.
Congrats, great explanation!
great video! This helped me prepare for an interview
Thanks Kerry.
Superb... Very open explanation Thanks a Lot
Thanks man !
Option A (treating each SP as a CE): 46:59
Option B (ASBRs forming MP-BGP peering with huge vpnv4 tables): 58:40
Option C (RRs forming MP-BGP peering separating Control Plane from Data Plane): 1:17:52
Thanks!
many thanks this video help me a lot
many thanks for this video
Excellent
Great explanation Great work
Thank you!
When you are planning for segment routing???
That was very good explanation.. But for inter-as Option-B, i think next-hop-self between R4 & RR and R8 & RR is not required because for bgp vpnv4 family next-hop-self is by default enabled.
Between R4&RR and R8&RR, we have MP-iBGP (next-hop-self disabled) and not MP-eBGP (next-hop-self enabled).
@UCpOXXnLw4FQeEPwdItHeGMQ In Option-A, the R4-R8 interface is in VRF Cust-A. So say the route 10.11.11.11 learnt on R4 from R8 appears like a PE-CE route for VRF Cust-A (E-BGP route).
On R4, this route then moves from the VRF table to the MP-BGP table. Due to MP-BGP between R4-R3, the route is learnt on R3 with the next hop of R4.
In Option-B, R4-R8 already have MP-BGP between them. R4 learns the route from R8 with the next-hop of R8. Thid route is sent as-is to R3 but R3 has no connectivity to R8, hence we use next-hop-self on R4. This way the next-hop changes to R4 as R3 has connectivity to R4.
The difference is in option-A, the route becomes a M-BGP route from an ipv4 PE-CE route but in option-B, the route is learnt as a MP-BGP route.
option A start from 47:00
Option B start from 58:00
Option C start from 1:18:00
Sir still waiting for your segment routing videos
can you share the eve-ng topology file ,very appreciate.
Frank Li Unfortunately I don’t store the eve files. Though it’s very easy to create the topology, I’m just using the IOL routers with 15.x release
@@BitsPlease if i want set the customer as the same ,so i need to use as-override in the vrf section ,right?
could you share the lab for test and study
Hey Nibras . This one was a while back so i dont have it handy. I talk about all the configurations in the videos though
how come without sending community string it worked
okay i got it, by default this comand is run by router so as to send mpls tag as community string.
Please upload p2mp rsvp te tunnel video...
at the end it was too confusing....and why one ISP will share all its own path to other ISP......path selection is complicated rest its awesome
Very Helpful ! could you please help me to get that lab for study and practice.