Enable BGP Routing
Define BGP as the IP routing protocol.
router bgp autonomous-system
The autonomous-system value is either an internally generated number (if not connecting to a provider network) or
obtained from an ISP or RIR.
It is a r
Excessive routing updates
CPU utilization can easily spike during this processing depending on:
The size of the routing update
The frequency of the updates
The Layer 3 network design
The presence of any incorrectly configured route maps or filters
IGP versus EGP
Interior gateway protocol (IGP)
A routing protocol operating within an Autonomous System (AS).
RIP, OSPF, and EIGRP are IGPs.
Exterior gateway protocol (EGP)
A routing protocol operating between different AS.
BGP is an inter-domain routing
The choice of routing protocol(s) used in a network is one factor in defining how paths are selected
The ability to maintain an acceptable level of service when faults occur.
Having redundancy does not guarantee resiliency.
Reliable packets (Update, Query, Reply) require explicit
acknowledgement while unreliable packets (Hello, ACK) do not
Initially sent after a new neighbor is discovered.
Sent when a topology change has been detected .
Query and Reply packets
1. OSPF is a standards-based link-state IP routing protocol
2. There are 2 versions; OSPFv2 is for IPv4 and OSPFv3 is for IPv6
Send periodic updates (link-state refresh), at long intervals, such as every 30 minutes.
Uses LSAs to confirm topology informati
1. Which route description best defines a floating static route?
a route with a metric equal to the metric of a corresponding dynamic route
a route with a metric less than the metric of a corresponding dynamic
a route with a metric greater than the