CCIE Routing & Switching Question of the Week

CCIEQoWSquare180803239What is the order of preference for filtering inbound border gateway protocol (BGP)?

A. Prefix list or distribute list, filter list, route maps
B. Filter list, route maps, prefix list or distribute list
C. Route maps, filter list, prefix list or distribute list
D. Filter list, prefix list or distribute list, route maps
E. Route maps, prefix list or distribute list, filter list
F. Prefix list or distribute list, route maps, filter list

Answer: C.

The order of preference for filtering routes received into BGP, if there are multiple methods, is to first pass through a route map, then through an AS-path filter and finishing with either a prefix list or a distribute list. This is per the BGP FAQ page on Cisco.com.

 

Related Courses
BGP — Configuring BGP on Cisco Routers v3.2
QOS — Implementing Cisco Quality of Service
MPLS — Implementing Cisco MPLS v2.3

CCIE Routing & Switching Question of the Week Series

  • CCIE Routing & Switching Question of the Week
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