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CCNP Route
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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)
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
MTU v MSS
MTU is largest packet (1500)
MSS is largest segment (MTU-40 ip header)
Two types of VRF
VRF-lite (complex) and EVN
TCP Synchronization?
Windows/backoff converge. WRED used to meter this
Describe types of MPLS VPN
L2 - CE Routers form adjacency
L3 - PE Routers form adjacency, usually run MP-BGP between PEs
Why is GRE useful?
Allows encapsulation of multicast (or any L3 protocol)
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
What features does IPSec provide?
Confidentiality, Integrity, Authentication, Anti-replay
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
What are the phases of IPSec negotiation?
Phase 1 - ISAKMP - Transform sets compared. Bidirectional SA
Phase 2 - IPSec tunnel - Unidirectional SA
What do AH and ESP provide?
AH - Origin auth, Integrity
ESP - Origin auth, Integrity, Encryption
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Author
mvou
ID
316657
Card Set
CCNP Route
Description
ccnp route chapter 1 and 2
Updated
2016-02-29T23:22:10Z
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