OTV Feature

OTV Features

1. Multi Vlan allowed on OTV
2. SITE Vlan work with two peer links e:g between two edge router.
3. OTV with Multicast is default Behavior
4. OTV use ISIS protocol with L2 Mac address advertise
5. MAC in IP routing (MPSL, GRE)
6. OTV can use any type of link , (DS3, SONET, P2P) need only IP v4 reachabilty
7. CE Edge device can any type of routing (e:g BGP, OSP, Eigrp)
8. Site identifier work as loop prevention system on OTV

Problem in OTV and feature  Limitation in OTV

1. Cannot run OTV inside the same VDC where you have L3 Vlans and (HSRP, GLBP)
2. For OTV you need to use Different VDC or differ Nexus7k switch, if we have L3 Vlan with HSRP or GLBP.
3. Between A site to B site the multicast need enable on PE routers. ISP will provide the feature with L2 MPLS links.
4. License should need to buy for OTV ( But for grace days we can use OTV as demo)



Cisco Hardware support OTV Feature

 
    1. Nexus 7000/7700
        Yes.
        M1/M2 series cards for the join interface
        The forthcoming F3 series cards will also support OTV encap/decap and can be used as the join interface

   2.  ASR 1000
        Yes. The Quantum Flow Processor in the ASR allows it to support OTV. Requires IOS-XE 3.5.0S and higher. 

    3. Nexus 5500
        No, and never will. Switching ASICs do not support OTV.

   4.  Nexus 6000
        No, and never will. Switching ASICs do not support OTV.

Note: These might not be the latest figures.






                                                    OTV Topology Diagram