3-5 - Configure and Verify PE-to-CE Routing Requirements - Command Reference

Question 1

IOS-XR Command:
redistribute protocol [process-id] {level-1 | level-1-2 | level-2} [autonomous-system-number] [metric {metric-value | transparent}] [metric-type type-value] [match {internal | external 1 | external 2}] [tag tag-value] [route-map map-tag] [subnets] [nssa-only]

Answer 1

Redistributes routes from one routing domain into another routing domain. To disable redistribution, use the no form of this command.

Question 2

IOS-XR Command:
sham-link [source-address] [destination-address] cost [cost]

Answer 2

Configures a point-to-point unnumbered interface between two VPN sites.

Question 3

IOS-XR Command:
show bgp vpnv4 unicast neighbors [neighbor] advertised-routes

Answer 3

Displays preview advertisements for a specified neighbor.

Question 4

IOS-XR Command:
show ospf [process-name] [ vrf { vrf-name | all } ] sham-links

Answer 4

Displays OSPF sham-link information.

Question 5

IOS-XR Command:
show ospf [process-name] [vrf {vrf-name | all}] [area-id] database

Answer 5

Displays lists of information that relate to the OSPF database for a specific router.

Question 6

IOS-XR Command:
show ospf [process-name] [vrf {vrf-name | all}] [area-id] neighbor [[interface-type interface-instance] [neighbor-id] [detail] | area-sorted]

Answer 6

Displays OSPF neighbor information on an individual interface basis.

Question 7

IOS-XR Command:
show route [ vrf {vrf-name | all} ] [ afi-all | ipv4 | ipv6 ] [ unicast | multicast | safi-all ] [ protocol [instance] | ip-address [mask] | ip-address /prefix-length ] [standby] [detail]

Answer 7

Displays the current routes in the RIB.

Question 8

IOS-XR Command:
show vrf [vrf-name] detail

Answer 8

Displays information about the configured VRFs.

Question 9

IOS-XR Command:
traceroute <host_ipv4_address> [ source {src_host_ipv4_address} ] [ vrf vrf_nam ]</host_ipv4_address>

Answer 9

Discovers the routes that packets actually take when traveling to their destination.

Question 10

IOS/IOS-XE Command:
capability vrf-lite

Answer 10

Suppresses the PE-specific checks on a router when the OSPF process is associated with the VPN VRF.

Question 11

IOS/IOS-XE Command:
ip ospf cost cost

Answer 11

Specifies the cost of sending a packet on an interface

Question 12

IOS/IOS-XE Command:
ip ospf network point-to-point

Answer 12

Configures the OSPF network type to a point-to-point network type.

Question 13

IOS/IOS-XE Command:
ip route vrf vrf-name prefix mask [next-hop-address]

Answer 13

Establishes static routes for a VPN VRF instance

Question 14

IOS/IOS-XE Command:
no switchport

Answer 14

Puts an interface that is in Layer 2 mode into Layer 3 mode for Layer 3 configuration.

Question 15

IOS/IOS-XE Command:
ping <host_ipv4_address> [ repeat num_packets ] [ source {src_host_ipv4_address} ] [ vrf vrf_nam ]</host_ipv4_address>

Answer 15

Verifies the system’s ability to communicate with a remote node in the network by passing data packets between them and measuring the response.

Question 16

IOS/IOS-XE Command:
redistribute <protocol> [process-id] {level-1 | level-1-2 | level-2} [autonomous-system-number] [metric {metric-value | transparent}] [metric-type type-value] [match {internal | external 1 | external 2}] [tag tag-value] [route-map map-tag] [subnets] [nssa-only]</protocol>

Answer 16

The redistribute command, in the appropriate configuration mode, redistributes routes from one routing domain into another routing domain. To disable redistribution, use the no form of this command.

Question 17

IOS/IOS-XE Command:
show ip bgp [ipv4 {multicast | unicast} | vpnv4 all | vpnv6 unicast all] neighbors [slow | ip-address | ipv6-address [advertised-routes | dampened-routes | flap-statistics | paths [reg-exp] | policy [detail] | received prefix-filter | received-routes | routes]]

Answer 17

Displays information about BGP and TCP connections to a neighbor.

Question 18

IOS/IOS-XE Command:
show ip ospf [process-id] database

Answer 18

Displays lists of information that relate to the OSPF database for a specific process ID.

Question 18

IOS/IOS-XE Command:
show ip ospf [area-id] neighbor

Answer 18

Displays OSPF neighbor information on an individual interface basis.

Question 19

IOS/IOS-XE Command:
show vrf detail [vrf-name]

Answer 19

Displays detailed information for the specified VRF name.

Question 20

IOS/IOS-XE Command:
traceroute <host_ipv4_address> [ source {src_host_ipv4_address} ] [ vrf vrf_nam ]</host_ipv4_address>

Answer 20

Discovers the routes that packets actually take when traveling to their destination.