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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CCNP Route

Description

ccnp route chapter 1 and 2

Updated

2016-02-29T23:22:10Z

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