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CCNP Route

  1. What are some factors in choosing a routing protocol?
    • -Scalability
    • -Vendor interoperability
    • -Speed of convergence
    • -Interior or exterior
    • -Summarization
    • -Type (Link state/Path Vector/Distance Vector)
  2. Problem with spanning vlans across multiple access layer switches?
    • FHRP device ARP timer should be reduced to equal or less than CAM table otherwise switch will know mapping but not destination
    • ARP default = 4 hours
    • Arp timeout 14400
  3. MTU v MSS
    • MTU is largest packet (1500)
    • MSS is largest segment (MTU-40 ip header)
  4. Two types of VRF
    VRF-lite (complex) and EVN
  5. TCP Synchronization?
    Windows/backoff converge. WRED used to meter this
  6. Describe types of MPLS VPN
    • L2 - CE Routers form adjacency
    • L3 - PE Routers form adjacency, usually run MP-BGP between PEs
  7. Why is GRE useful?
    Allows encapsulation of multicast (or any L3 protocol)
  8. What are the components of DMVPN?
    • GRE - Generic Routing Encapsulation. Multipoint GRE used for multiple tunnels on single int
    • NHRP - Hub router serves as central DB of Physical and Logical mappings
    • IPSec - Tunnel or Transport mode
  9. What features does IPSec provide?
    Confidentiality, Integrity, Authentication, Anti-replay
  10. What are the commands required for a GRE tunnel?
    • Interface tunnel 1
    • Ip address 10.1.1.1 255.255.255.240
    • Tunnel source gi0/1|1.1.1.1
    • Tunnel destination 2.2.2.2
  11. What are the phases of IPSec negotiation?
    • Phase 1 - ISAKMP - Transform sets compared. Bidirectional SA
    • Phase 2 - IPSec tunnel - Unidirectional SA
  12. What do AH and ESP provide?
    • AH - Origin auth, Integrity
    • ESP - Origin auth, Integrity, Encryption
Author
mvou
ID
316657
Card Set
CCNP Route
Description
ccnp route chapter 1 and 2
Updated

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