CCNP SP MPLS FAQ: IP Tunneling to MPLS/VPN Migration Case Study Q1. List two of the several items that must be addressed during the migration planning stage. Figure: SampleNet Central Site Migration Scenario Answer: • Define the deployment requirements. • Assign the necessary naming conventions. • Define the RD and RT format. • Define the PE-CE link addressing. • … [Read more...]
CCNP SP MPLS FAQ: Provider Edge (PE) to Customer Edge (CE) Connectivity Options
CCNP SP MPLS FAQ: Provider Edge (PE) to Customer Edge (CE) Connectivity Options Q1. What are the four ways in which routing information can currently be Answer: Static, BGP, OSPF, and RIP version 2. Q2. When running a dynamic routing protocol between PE and CE, how can the PE identify which routing update belongs to which VRF? Answer: This is identified by the routing … [Read more...]
CCNP SP MPLS FAQ: MPLS Operation and Maintenance
CCNP SP MPLS FAQ: MPLS Operation and Maintenance Q1. What does MPLS LSP ping provide that IP ping does not? Answer: IP ping verifies only IP connectivity, whereas LSP ping also verifies whether the LSP is broken. Q2. Name three MPLS-specific MIBs. Answer: MPLS-specific MIBs can include any three of the following: MPLS-LDP-MIB MPLS-LSR-MIB MPLS-TE MIB … [Read more...]
CCNP SP MPLS FAQ: MPLS Migration and Configuration Example
CCNP SP MPLS FAQ: MPLS Migration and Configuration Example Q1. Carrying external customer routes within BGP has two advantages; list them. Answer: Having numerous routes within the IGP can lead to stability and scalability issues that are not present within BGP.The internal routing infrastructure of the service provider is protected from outside route flapping of … [Read more...]
CCNP SP MPLS FAQ: MPLS and Quality of Service
CCNP SP MPLS FAQ: MPLS and Quality of Service Q1. How many bits in the IP header can be used for QoS? Answer: Three bits in the IP header can be used for QoS if the precedence bits are used, and six bits can be used if the DSCP bits are used. Q2. How many AF classes exist? Answer: Four AF classes exist. Q3. Name the three MPLS DiffServ models. Answer: Uniform model, Pipe … [Read more...]
CCNP SP MPLS FAQ: Virtual Private LAN Services
CCNP SP MPLS FAQ: Virtual Private LAN Services Q1. As which kind of port type can the customer-facing Ethernet interface on the PE router be configured? Answer: The customer-facing Ethernet interface on the PE router can be configured as any of the following: An access port An 802.1Q trunk port A dot1qtunnel port Q2. How many labels are used to forward … [Read more...]
CCNP SP MPLS FAQ: Any Transport over MPLS
CCNP SP MPLS FAQ: Any Transport over MPLS Q1. Name the advantages of AToM for the service provider. Answer: Following are the advantages of AToM for the service provider: You can apply AToM over the existing MPLS infrastructure and protect existing investments. You can provision AToM easily, because you do not need to deploy IP routing with the customer routers. … [Read more...]
CCNP SP MPLS FAQ: IPv6 over MPLS
CCNP SP MPLS FAQ: IPv6 over MPLS Q1. Name three reasons to have a new IP protocol. Answer: Following are some of the reasons for having a new IP protocol: Bigger addresses More streamlined and more efficient IP header Fixed IP header size Flow Label field Q2. How many bits does an IPv6 address have? Answer: An IPv6 address has 128 bits. Q3. What … [Read more...]
CCNP SP MPLS FAQ: MPLS Traffic Engineering
CCNP SP MPLS FAQ: MPLS Traffic Engineering Q1. Name the advantages of MPLS traffic engineering Answer: The advantages of MPLS traffic engineering include the following: Steering traffic so that all links in the network are used optimally Routing traffic around hotspots in the network Fast rerouting traffic around link and node failures Q2. What are the … [Read more...]
CCNP SP MPLS FAQ: MPLS VPN
CCNP SP MPLS FAQ: MPLS VPN Q1. What is a route distinguisher? Answer: A route distinguisher is a 64-bit value—chosen by the service provider—that is appended to the IPv4 routes of the customer and makes the routes unique. Q2. How is a packet that is coming from the CE router identified as to which VRF it belongs? Answer: The packet is identified as belonging to a VRF by the … [Read more...]