Information shown in the figure is performed to filter all received routes. Assume that there is a BGP route with the AS-Path attribute [100 200 300 400] on R1 that needs to be sent to R2. Please…

To ensure the route entry is not used by BGP's route-policy filter B010 (which uses ip as-path-filter BGP permit ^[2]00 400 100.), the AS path needs to be adjusted. The original path is [100 200 300 400]. The suggested correct sequence to use is 100 200 300 400 in the apply…

IP Routing Technologies

Question

Information shown in the figure is performed to filter all received routes. Assume that there is a BGP route with the AS-Path attribute [100 200 300 400] on R1 that needs to be sent to R2. Please help the network administrator adjust the order of AS in the AS Path attribute of the route on R1 to ensure that the route entry will not be used by BGP's route-policy filter B010. Provide the sequence of AS numbers for the apply as-path command.

Explanation

To ensure the route entry is not used by BGP's route-policy filter B010 (which uses ip as-path-filter BGP permit ^[2]00 400 100.), the AS path needs to be adjusted. The original path is [100 200 300 400]. The suggested correct sequence to use is 100 200 300 400 in the apply as-path command. So, the command segment would be apply as-path 100 200 300 400 overwrite.

Topics

#BGP AS-Path#route-policy filter#AS path manipulation#BGP filtering

Community Discussion

No community discussion yet for this question.

Full H12-821_V1.0 Practice