Configure PBR SONIC-DEPLOY Practice Questions (Page 1)

Questions 1–5

1. 1expert · hard

   A network engineer is configuring PBR on a Dell SONiC switch to redirect traffic from a branch office subnet to a central VPN gateway. The route map 'VPN' matches the source subnet and sets the next hop to 172.16.0.1. After applying the route map to the ingress interface, the engineer notices that traffic is still being sent via the default route. The match counters in 'show route-map VPN' are incrementing. What should the engineer check next?

   • ACheck that the route map is applied to the correct interface.
   • BReboot the switch to reinitialize the PBR configuration.
   • CVerify that the next hop 172.16.0.1 is reachable and has a valid route in the routing table.
   • DEnsure the prefix-list matches the exact source IP of the traffic.
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2. 2expert · hard

   A Dell SONiC switch is configured with PBR to load-balance traffic between two ISPs. The route map 'ISP_PBR' matches all traffic from 192.168.0.0/16 and sets the next hop to a group containing 1.1.1.1 and 2.2.2.2. The administrator wants to ensure that if one ISP goes down, all traffic is sent to the remaining ISP. What is the correct configuration?

   • AUse 'set ip next-hop 1.1.1.1 2.2.2.2' directly in the route map.
   • BDefine a next-hop group with both IPs and reference it in the route map; the switch will automatically fail over to the remaining next hop.
   • CSet the next hop to 1.1.1.1 and add a static route for 2.2.2.2 as a backup.
   • DDefine two separate route maps, one for each ISP, and apply both to the interface.
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4. 3foundation · easy

   After configuring a PBR route map, what is the final step to make the policy take effect on a specific interface in Dell SONiC?

   • ARedistribute the route map into the routing protocol
   • BApply the route map to the interface using the 'ip policy route-map' command
   • CEnable PBR globally using the 'ip routing' command
   • DCreate a static route referencing the route map
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5. 4foundation · easy

   In a Dell SONiC PBR configuration, what is the role of the 'set' action within a route map?

   • AIt specifies the forwarding action to apply to matched traffic, such as setting the next hop
   • BIt enables or disables the PBR policy on a specific interface
   • CIt defines which packets are selected for policy processing
   • DIt assigns a priority value to the route map for processing order
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6. 5expert · hard

   A Dell SONiC switch has a PBR route map 'PBR1' applied to interface Ethernet1. The route map matches source IP 192.168.1.0/24 and sets the next hop to 10.0.0.1. Traffic from 192.168.1.10 is not being redirected; it is still using the default route. The administrator verifies that the route map is applied to Ethernet1 and that the match counters in 'show route-map PBR1' are incrementing. What is the most likely cause?

   • AThe next hop 10.0.0.1 is not reachable, so the switch falls back to the default route.
   • BThe route map has a 'set ip default next-hop' instead of 'set ip next-hop'.
   • CThe prefix-list used in the route map matches 192.168.1.0/24 but not the host 192.168.1.10.
   • DThe route map is applied to the egress interface instead of the ingress interface.
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