nerdexam
Cisco

300-415 · Question #409

Refer to the exhibit. Site 2 prefers the MPLS circuit to reach site 1 and advertises the routes learned into service VPN. Which policy configuration achieves this?

The correct answer is A. Router Centralized Policy > Topology > Sequence Rule Match Conditions Color List: MPLS Actions Accept Preference: 500. To make Site 2 prefer the MPLS circuit for reaching Site 1, a centralized route policy is configured to match routes destined for Site 1's TLOCs with the 'MPLS' color and set a higher preference for those paths.

Policies

Question

Refer to the exhibit. Site 2 prefers the MPLS circuit to reach site 1 and advertises the routes learned into service VPN. Which policy configuration achieves this?

Options

  • ARouter Centralized Policy > Topology > Sequence Rule Match Conditions Color List: MPLS Actions Accept Preference: 500
  • BTLOC Centralized Policy > Topology > Sequence Rule Match Conditions Originator: 10.10.1.1 Actions Accept Preference: 500
  • CTLOC Centralized Policy > Topology > Sequence Rule Match Conditions TLOC IP: 10.10.1.1 Color: mpls Encapsulation: IPSEC Actions Accept Preference: 500
  • DRoute Centralized Policy > Topology > Sequence Rule Match Conditions Site List: Actions Accept Site ID: 101 TLOC IP: 10.10.1.1 Color: mpls Encapsulation: IPSEC

How the community answered

(57 responses)
  • A
    79% (45)
  • B
    4% (2)
  • C
    14% (8)
  • D
    4% (2)

Why each option

To make Site 2 prefer the MPLS circuit for reaching Site 1, a centralized route policy is configured to match routes destined for Site 1's TLOCs with the 'MPLS' color and set a higher preference for those paths.

ARouter Centralized Policy > Topology > Sequence Rule Match Conditions Color List: MPLS Actions Accept Preference: 500Correct

To make Site 2 prefer the MPLS circuit for reaching Site 1, a centralized route policy is used. The policy would match routes originating from or destined for Site 1 (or its TLOCs) with the 'MPLS' color. Setting a higher 'Preference' (e.g., 500) for these routes on Site 2 effectively makes the MPLS path more desirable than other paths.

BTLOC Centralized Policy > Topology > Sequence Rule Match Conditions Originator: 10.10.1.1 Actions Accept Preference: 500

Matching on 'Originator' IP address alone is not specific enough to prioritize a particular color (MPLS) for reaching Site 1 from Site 2; a TLOC policy or a route policy matching TLOC color is more appropriate for path selection.

CTLOC Centralized Policy > Topology > Sequence Rule Match Conditions TLOC IP: 10.10.1.1 Color: mpls Encapsulation: IPSEC Actions Accept Preference: 500

While a TLOC Centralized Policy can influence TLOC properties, the objective of preferring a specific circuit for routes is better achieved by a route policy that modifies vRoute attributes like TLOC preference.

DRoute Centralized Policy > Topology > Sequence Rule Match Conditions Site List: Actions Accept Site ID: 101 TLOC IP: 10.10.1.1 Color: mpls Encapsulation: IPSEC

The syntax 'Actions Accept Site ID: 101' is incorrect for a route policy action; Site ID is typically a match condition, and preference is set directly as an action.

Concept tested: Cisco SD-WAN Centralized Route Policy for path preference

Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-cr-book/control-plane-components.html

Topics

#Cisco SD-WAN Policies#Centralized Control Policy#OMP Route Preference#Transport Color

Community Discussion

No community discussion yet for this question.

Full 300-415 Practice