Why is it necessary to enable CEF before running MPLS.
Two MPLS peers not able to for LDP neighborship. What are probable causes?
Which entity imposes label on the PE if the packet arrives unlabelled on it.
Explain the two types of Label Space. Per Platform and Per Interface.
What is OSPF SHAM-Link. Explain its use.
What is MP-BGP? Can we use normal BGP to run an MPLS VPN?
Can we assign a same RD to two different customers?
Customer is distinguished by an RD or an RT?
In control plane, how MP-BGP advertises the VPNv4 Label to its peers?
What is difference b/w Implicit-null and Explicit Null?
Explain the process of LDP neighborship forming?
Explain the difference b/w Process, Fast-Switching, Optimum-Switching and CEF Switching.
Name few other protocols that can generate and distribute labels besides LDP.
Explain various methods of Inter-AS communication.
What is difference b/w Inter-AS communication and CSC?
What is MPLS LDP Sync? What is its benefit in MPLS VPN.
Do RD value travel in an MP-BGP update?
What is difference b/w an Aggregate label and Unlabbeled terms?
What is difference b/w Down-bit and Domain-Tag when we use OSPF as CE-PE protocol.
Explain the terms “Allow-as in”, “as-override” with the help of an example.
How can you refrain an RR router to not participate in Data Plane and only be used for Control Plane Communication.
Explain the use of commands “no bgp default ipv4-unicast” and “no bgp default route-target filter”.
Two PE nodes are advertising the vpnv4 routes using an RR but both PE cannot see/learn the remote-routes(advertised by 2nd PE) in their routing table even when they belong to same customer and RT values are correctly exported and imported. Explain the possible causes.
