Network requirements
In the following figure, Switch B establishes eBGP connections with Switch A and C. Configure the No_Export community attribute on Switch A so that routes from AS 10 are not advertised by AS 20 to any other AS.
In the following figure, Switch B establishes eBGP connections with Switch A and C. Configure the No_Export community attribute on Switch A so that routes from AS 10 are not advertised by AS 20 to any other AS.