2-6 - Troubleshoot the MPLS VPN Backbone Flashcards

1
Q

IOS-XR Command:
address-family vpnv4 unicast

A

Enters address-family configuration mode to configure a routing session using VPN Version 4 address prefixes.

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2
Q

IOS-XR Command:
area [area-id]

A

Enters OSPF area configuration mode.

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3
Q

IOS-XR Command:
commit

A

Commits changes to the running configuration.

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4
Q

IOS-XR Command:
configure terminal

A

Enters configuration mode.

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5
Q

IOS-XR Command:
dead-interval

A

Sets the time period for which hello packets are not seen before neighbors declare the router down.

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6
Q

IOS-XR Command:
debug tcp events

A

Enables the debugging of the TCP events.

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7
Q

IOS-XR Command:
end

A

Returns to privileged EXEC mode.

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8
Q

IOS-XR Command:
exit

A

Returns to the previous configuration mode.

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9
Q

IOS-XR Command:
hello-interval

A

Specifies the interval between hello packets that the Cisco IOS Software sends on the interface.

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10
Q

IOS-XR Command:
mpls ldp

A

Enters MPLS LDP configuration mode.

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11
Q

IOS-XR Command:
neighbor [ip-address]

A

BGP configuration mode command. Activates the exchange of routes from the address family under the configuration for the specified neighbor.

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12
Q

IOS-XR Command:
no distribute-list [distribute-list-name]

A

Removes the distribute lList.

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13
Q

IOS-XR Command:
no redistribute static metric 1

A

Remove the redistribution of statics routes.

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14
Q

IOS-XR Command:
no router static address-family ipv4 unicast

A

Removes the static route.

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15
Q

IOS-XR Command:
ping [dest_IP] source [interface]

A

Verifies connectivity between the source IP and destination IP.

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16
Q

IOS-XR Command:
ping destination-ip

A

Verifies connectivity to the specified destination IP.

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17
Q

IOS-XR Command:
ping mpls ipv4 [dest-address/mask] source [source-address]

A

Checks MPLS host reachability and network connectivity by specifying the destination type as an LDP IPv4 address.

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18
Q

IOS-XR Command:
route-reflector-client

A

Configures the local router as the route reflector and the specified neighbor as one of its clients.

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19
Q

IOS-XR Command:
router bgp as-number

A

Enters BGP configuration mode for the specified autonomous system number.

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20
Q

IOS-XR Command:
router ospf [process-id]

A

Enters OSPF configuration mode.

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21
Q

IOS-XR Command:
show access-lists [access-list-name]

A

Shows only the access control entries for the access list that you specify.

22
Q

IOS-XR Command:
show bgp neighbors

A

Displays information about BGP and TCP connections to neighbors.

23
Q

IOS-XR Command:
show bgp vpnv4 unicast summary

A

Displays a summary of VPNv4 routes from the BGP table.

24
Q

IOS-XR Command:
show mpls forwarding

A

To display the contents of the MPLS LFIB, use this command in EXEC mode.

25
Q

IOS-XR Command:
show mpls ldp binding

A

To display the contents of the LIB, use this command in EXEC command.

26
Q

IOS-XR Command:
show mpls ldp discovery

A

This command shows both link discovery and targeted discovery. When you specify no interface filter, this command generates a list of interfaces that run the LDP discovery process. This command also displays neighbor discovery information for the default routing domain.

27
Q

IOS-XR Command:
show mpls ldp interfaces

A

To display information about one or more interfaces that are configured for MPLS, use this command in EXEC mode.

28
Q

IOS-XR Command:
show mpls ldp neighbor

A

To display the status of LDP sessions, use this command in EXEC mode.

29
Q

IOS-XR Command:
show ospf interface [brief | interface]

A

Displays OSPF-related interface information.

30
Q

IOS-XR Command:
show ospf neighbor

A

Displays OSPF-neighbor information on a per-interface basis.

31
Q

IOS-XR Command:
show protocols [protocol]

A

Displays the parameters and the current state of the active routing protocol process.

32
Q

IOS-XR Command:
show route protocol [process-id]

A

Displays the current state of the routing table.

33
Q

IOS-XR Command:
show running-config router [protocol]

A

Displays the running configuration for a specific routing protocol.

34
Q

IOS-XR Command:
undebug all

A

Turns off all possible debugs.

35
Q

IOS-XR Command:
update-source [interface]

A

Tells the Cisco software to allow BGP sessions to use a specific operational interface for TCP connections.

36
Q

IOS/IOS-XE Command:
clear ip ospf process

A

Restarts the OSPF process.

37
Q

IOS/IOS-XE Command:
debug ip ospf adj

A

Displays information on adjacency events that relate to OSPF.

38
Q

IOS/IOS-XE Command:
debug ip ospf events

A

Displays information on OSPF-related events.

39
Q

IOS/IOS-XE Command:
no neighbor [ip-address] password [key]

A

Removes the BGP authentication.

40
Q

IOS/IOS-XE Command:
ping mpls ipv4 [dest-address/mask] source [source-address]

A

Checks MPLS host reachability and network connectivity by specifying the destination type as an LDP IPv4 address.

41
Q

IOS/IOS-XE Command:
router bgp as-number

A

Enters BGP configuration mode for the specified autonomous system number.

42
Q

IOS/IOS-XE Command:
ping vrf [vrf-name] [dest_address]

A

Verifies connectivity between the VRFs and destination IP.

43
Q

IOS/IOS-XE Command:
router ospf [process-id]

A

Enters OSPF configuration mode.

44
Q

IOS/IOS-XE Command:
router-id [ip-address]

A

Forces OSPF to use the specified IP address as the router ID.

45
Q

IOS/IOS-XE Command:
show bgp all neighbors

A

Displays information about BGP and TCP connections to neighbors.

46
Q

IOS/IOS-XE Command:
show bgp vpnv4 unicast all summary

A

Display a summary of VPNv4 routes from the BGP table.

47
Q

IOS/IOS-XE Command:
show ip ospf interface [interface]

A

Displays OSPF-related interface information.

48
Q

IOS/IOS-XE Command:
show ip ospf neighbor

A

Displays OSPF-neighbor information on a per-interface basis.

49
Q

IOS/IOS-XE Command:
show ip protocols [protocol]

A

Displays the parameters and the current state of the specified routing protocol process.

50
Q

IOS/IOS-XE Command:
show ip route vrf [vrf-name]

A

Displays the current state of the routing table for a particular VRF.

51
Q

IOS/IOS-XE Command:
show running-config | section router [protocol]

A

Filters the output of a show running-config command to match a given section of a routing protocol.

52
Q

IOS/IOS-XE Command:
undebug all

A

Turns off all possible debugs.