Cisco (300-510-SPRI) Exam Questions And Answers page 11
Refer to the exhibit. CE1 is the gateway router into the provider network via PE1. A network operator must inject a default route into OSPF area 0. All devices inside area 0 must be able to reach PE1. Which configuration achieves this goal?
Routing Protocols
Infrastructure Security and Services
Refer to the exhibit.
CE1 and CE2 are iBGP neighbors in AS 65516. All traffic that exits AS 65516 must use the link from CE1 to PE1. CE1 is advertising a higher local preference to CE2, but traffic from CE2 still prefers the PE2 link. Which action corrects the problem?
CE1 and CE2 are iBGP neighbors in AS 65516. All traffic that exits AS 65516 must use the link from CE1 to PE1. CE1 is advertising a higher local preference to CE2, but traffic from CE2 still prefers the PE2 link. Which action corrects the problem?
Add the lower local-preference value on PE2 towards CE2.
Configure CE1 to send routes to CE2 with a higher MED.
Configure CE1 to send routes to CE2 with a higher weight.
Add the next-hop self command to the CE1 neighbor statement for CE2.
Routing Protocols
Infrastructure Security and Services
Refer to the exhibit
An engineer is configuring service traffic from router R1 to R6 as shown. Which additional configuration must the engineer implement so that the LDP and SR domains will participate and interwork with each other?
An engineer is configuring service traffic from router R1 to R6 as shown. Which additional configuration must the engineer implement so that the LDP and SR domains will participate and interwork with each other?
Router2(config)# segment-routing
Router2(config-sr)# ldp mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)#
Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 4
Router2(config-sr)# ldp mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)#
Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 4
Router2(config)# segment-routing
Router2(config-sr)# sr mapping-server
Router2(config-sr-ms)# ldp-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
Router2(config-sr)# sr mapping-server
Router2(config-sr-ms)# ldp-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
Router2(config)# segment-routing
Router2(config-sr)# mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
Router2(config-sr)# mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 10.1.1.1/32 500 range 50
Router2(config)# segment-routing
Router2(config-sr)# ldp mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 40
Router2(config-sr)# ldp mapping-server
Router2(config-sr-ms)# prefix-sid-map
Router2(config-sr-ms-map)# address-family ipv4
Router2(config-sr-ms-map-af)# 2.2.2.2/32 500 range 40
MPLS and VPN Technologies
QoS and Traffic Engineering
What are two true statements about route reflectors?
Multiple Choice
Which two statements about route reflectors are true? (Choose two.)
Routes received from nonclient peers are reflected to route reflector clients as well as nonclient peers.
Routes received from nonclient peers are reflected to route reflector cluster as well as OSPF peers.
If a router received an iBGP route with the originator-ID attribute set to its own router ID, the route is discarded.
Routes received from a route reflector client is reflected to other clients and nonclient peers.
If a route reflector receives a route with a cluster-list attribute containing a different cluster ID, the route is discarded.
Routing Protocols
High Availability and Fast Convergence
Refer to the exhibit. P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which action fixes the issue?
Change HMAC-MD5 to HMAC-SHA1-20
Configure the send and accept lifetime under key 1
Change HMAC-MD5 to MD5
Change HMAC-MD5 to HMAC-SHA1-12
Routing Protocols
Refer to the exhibit. A network operator wants to expand the segment routing global block in upcoming maintenance. The operator must ensure that the changes to the segment routing global block have no adverse impacts on the prefix-sid associated with the loopback0 interface used within the OSPF domain. Which command can the operator use to enforce R2 to have a strict prefix-sid assignment to loopback0?
Routing Protocols
QoS and Traffic Engineering
Refer to the exhibit. Routers within the cluster are not receiving the desired prefixes. What must be done to fix the issue?
Clients in that cluster must have full mesh connectivity between eBGP peers
No client-to-client reflection must be enabled
Clients in that cluster must have full mesh connectivity between iBGP peers
No client-to-client must be disabled
Routing Protocols
High Availability and Fast Convergence
Refer to the exhibit. A network operator is configuring BGP PIC on CE1 on already established neighborships with PE1 and PE2 inside the fully converged MPLS network. Which element needs to be implemented to make this feature function effectively?
Bidirectional Forwarding Detection must be applied to the upstream facing BGP interfaces
The operator must ensure that all prefixes have the same next-hop from PE1 and PE2 for BGP PIC
A reserved BGP community of 1:10 must be used to denote the PIC feature set to the routing protocol
BGP import/export policies must be applied on all devices for the routes needing BGP for PIC
Routing Protocols
MPLS and VPN Technologies
Refer to the exhibit. A network operator is troubleshooting TE tunnels and discovers that the soft preemption is not working as desired. Where should the soft preemption be applied to solve the issue?
under the tunnel-te1 interface on PE1
on the tail-end device for tunnel-te1 192.168.0.7
under the interface Loopback0 necessary for this deployment type
explicitly for tunnel-te 1 under the Cisco MPLS TE configuration mode after the timeout setting
QoS and Traffic Engineering
High Availability and Fast Convergence
Refer to the exhibit. An administrator is troubleshooting Internet access issues on a customer s network. After applying this ISIS configuration to R1, the administrator notices that it fails to redistribute the default route into IS-IS. After checking the connectivity between the ISIS router and the ISP router the engineer confirmed there is Layer 3 connectivity between them. Which action should be taken to correct the problem?
Configure R1 as a Layer 1 router
Add the default-information originate command to the configuration
Configure the default route under any routing protocol other than IS-IS
Associate the default route with a VRF
Infrastructure Security and Services
QoS and Traffic Engineering
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