cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
2355
Views
11
Helpful
0
Comments
TCC_2
Level 10
Level 10

Core Issue

Border Gateway Protocol (BGP) uses regular expressions for route filtering based on the Autonomous System (AS) path attribute. Regular expressions can be built using letters (A through Z, a through z), numbers (0 through 9) and other keyboard characters, including the question mark (?) character. A regular expression with the (?) character might not be successfully configured because Cisco IOS  Software interprets the (?) character as a help command.

Resolution

To prevent the question mark from being interpreted as a help command while configuring regular expressions with the question mark (?) character, press the Ctrl and v keys before entering the question mark.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: