— Exhibit –
— Exhibit —
Click the Exhibit button.
Referring to the exhibit, your AS is connected to ISP-A and ISP-B using BGP. R1 and R2 are
advertising your AS’s 172.25/16 prefix upstream to both ISPs, and both ISPs are providing a full
BGP route table. You want to influence traffic flow so that traffic towards your network enters
through R1.
Which action would meet the requirement?
Apply the following as an export policy towards ISP-B:
A.
[edit policy-options]
user@R2# show
policy-statement prefer-for-inbound {
term prepend {
then {
as-path-prepend “100 100”;
accept;
}
Apply the following as an export policy towards ISP-A:
B.
[edit policy-options]
user@R1# show
policy-statement prefer-for-inbound {
term prepend {
then {
as-path-prepend “100 100”;
accept;
}
Apply the following as an export policy towards R1 and R3:
C.
[edit policy-options]
user@R2# show
policy-statement prefer-for-inbound {
term local-pref {
then {
local-preference 110;
accept;
}
Apply the following as an export policy towards R2 and R3:
D.
[edit policy-options]
user@R1# show
policy-statement prefer-for-inbound {
term local-pref {
then {
local-preference 110;
accept;
}