Juniper
JN0-663 · Question #193
Exhibit: You have a Layer 3 VPN established between PE-1 and PE-2 as well as between PE-1 and PE- 3. You are using a route reflector (RR-1) to distribute VPN routes to your IBGP peers. You are asked…
The correct answer is B. You should use route target filtering on RR-1 and all the PE devices to control which routes are. Route Target needs to be configured on PE and RR. PE will advertise to RR required target: communities and RR will advertise 0/0 to request all VPN routes from PE.
MPLS Layer 3 VPNs
Question
Exhibit: You have a Layer 3 VPN established between PE-1 and PE-2 as well as between PE-1 and PE- 3. You are using a route reflector (RR-1) to distribute VPN routes to your IBGP peers. You are asked to ensure that only relevant routes are sent from RR-1 to each of the PE routers. Referring to the exhibit, which statement is correct?
Exhibit
Options
- AYou should use VRF export policies on RR-1 to control which routes are sent to each PE router.
- BYou should use route target filtering on RR-1 and all the PE devices to control which routes are
- CYou should use firewall filtering on RR-1 and all the PE devices to control which routes are sent to
- DYou should use route target filtering only on RR-1 to control which routes are sent to each PE
How the community answered
(42 responses)- A7% (3)
- B74% (31)
- C5% (2)
- D14% (6)
Explanation
Route Target needs to be configured on PE and RR. PE will advertise to RR required target: communities and RR will advertise 0/0 to request all VPN routes from PE.
Topics
#route target filtering#route reflector#L3 VPN#PE router
Community Discussion
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