| Segment Routing Based MPLS | Classic MPLS | |
|---|---|---|
| MPLS Transport | IGP | IGP + LDP |
| IGP/LDP synchronization | Not Required | Required and Added More Latecny in Convergence |
| 50msec FRR | IGP | IGP + RSVP-TE |
| Extra TE states to support FRR | No extra state | Extra states to manage |
| Optimum backup path | Yes | No |
| ECMP-capability for TE | Inbuilt | No |
| TE state only at headend | Yes | No (n^2 problem at midpoint) |
| Seamless Interworking with classic MPLS | Yes | NA |
| SDN Support | Yes | No |
| Routing | Constraint Based (Source can Define) | Destination Based + RSVP-TE |
| Link information | (Bandwidth, IGP metric, TE metric, SRLG ) is flooded throughout the IGP domain | No |
| Path Calculation | CSPF or By Using Centralized Controller | IGP + RSVP-TE |
| Scalability | High | Low |
| Operations and Troubleshooting | Low | High |
SDN and NFV is the next phase of technology change which will help service provider to launch the services in single click. This is all about the programmability of the networks by using open source software defined network controller.
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Thursday, July 16, 2015
Segment Routing Based MPLS Vs Classic MPLS
Previous post has already covered why segment routing is required with all it's basic information. This post is mainly focusing on difference between SR Based MPLS Networks Vs Classic MPLS Networks.
And here is the rest of it.
Great post!!
ReplyDeleteAre there any service providers who are using Segment Routing in their Live/Production Network. Are there any know challenges/limitations going with this.
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