300-415 · Question #442
Refer to the exhibit. An enterprise requires spoke sites 102 and 103 to use the MPLS circuit to reach the 172.16.101.0/24 subnet (Service VPN 100) advertised by site 101 (Hub Site). Which policy…
The correct answer is A. apply-policy site-list Spokes control-policy Route-Policy site-list Hub control-policy Route-Policy in. To ensure spoke sites utilize the MPLS circuit to reach a specific subnet at the hub site, an inbound control policy must be applied to the spokes.
Question
Options
- Aapply-policy site-list Spokes control-policy Route-Policy site-list Hub control-policy Route-Policy in
- Bapply-policy site-list Spokes control-policy Route-Policy out
- Capply-policy site-list Hub control-policy Route-Policy in
- Dapply-policy site-list Hub control-policy Route-Policy out
How the community answered
(28 responses)- A75% (21)
- B7% (2)
- C14% (4)
- D4% (1)
Why each option
To ensure spoke sites utilize the MPLS circuit to reach a specific subnet at the hub site, an inbound control policy must be applied to the spokes.
An inbound control policy applied to the spoke sites (site-list Spokes) is necessary to modify the TLOC preference or restrict transport for routes received from the hub, ensuring the MPLS circuit is used for the specified subnet.
Applying an outbound policy on spokes would affect routes advertised by the spokes, not how they reach a subnet advertised by the hub.
Applying an inbound policy on the hub would affect routes received by the hub, not how spokes reach the hub.
Applying an outbound policy on the hub would affect routes advertised by the hub, but the requirement is for spokes to use MPLS, which means spokes need to process the received routes accordingly.
Concept tested: Cisco SD-WAN control policy application direction
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-cr-book/control-policies.html
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