3-3 - Configure MP-BGP as the PE-CE Routing Protocol - Command Reference

Question 1

IOS-XR Command:
maximum-prefix [maximum-prefix-number] [warning-percentage]

Answer 1

VRF address-family configuration mode command. Sets the maximum number of prefixes that are allowed in the VRF routing table.

Question 2

IOS-XR Command:
maximum-prefix [maximum threshold] discard-extra-paths

Answer 2

BGP neighbor address-family configuration mode command. Sets the maximum number of routes that are allowed for the configured neighbor. The threshold attribute specifies the warning percentage, and discard-extra-paths tells the router to not remove the neighbor after reaching the maximum limit and to discard only the exceeding prefix.

Question 3

IOS-XR Command:
show bgp vrf [vrf-name] summary

Answer 3

Displays BGP VRF neighbor summary information.

Question 4

IOS-XR Command:
show cef vrf [vrf-name] [prefix/length]

Answer 4

Displays Cisco Express Forwarding routing information for the specified prefix and length.

Question 5

IOS-XR Command:
show mpls forwarding [prefix prefix/length]

Answer 5

Displays MPLS LFIB information for the specified prefix and length.

Question 6

IOS-XR Command:
show mpls forwarding vrf [vrf-name] prefix [prefix/length]

Answer 6

Displays MPLS LFIB information for the specified prefix and length in the specified VRF.

Question 7

IOS-XR Command:
traceroute vrf [vrf-name] [destination-ip] source [interface number]

Answer 7

Displays the hop-by-hop path to reach the destination IP from the specified source interface.

Question 8

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

Answer 8

BGP configuration mode command. Configures the BGP route ID.

Question 9

IOS/IOS-XE Command:
clear bgp vrf [vrf-name] ipv4 unicast [neighbor-ip]

Answer 9

Restarts the BGP session with the specified BGP neighbor in the respective VRF.

Question 10

IOS/IOS-XE Command:
maximum routes [maximum threshold]

Answer 10

VRF address-family configuration mode command. Sets the maximum routes number that are allowed in the VRF and configures the notification message threshold.

Question 11

IOS/IOS-XE Command:
neighbor [neighbor-ip] activate

Answer 11

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

Question 12

IOS/IOS-XE Command:
neighbor [neighbor-ip] as-override

Answer 12

BGP configuration mode command. Enables the AS-Override feature for the specified BGP neighbor.

Question 13

IOS/IOS-XE Command:
neighbor [neighbor-ip] maximum-prefix [maximum threshold]

Answer 13

BGP configuration mode command. Configures the maximum number of prefixes from the specified neighbor and sets the warning logging message threshold percentage.

Question 14

IOS/IOS-XE Command:
neighbor [neighbor-ip] route-map [route-map-name] in

Answer 14

BGP configuration mode command. Applies a route map in the inbound direction to the specified neighbor.

Question 15

IOS/IOS-XE Command:
ping vrf [vrf-name] [destination-ip] source interface [number]

Answer 15

Performs a connectivity test to the destination IP from the specified source interface.

Question 16

IOS/IOS-XE Command:
show bgp vpnv4 unicast vrf [vrf-name] [prefix/length]

Answer 16

Displays BGP VPNv4 unicast address-family information for the specified prefix and length in the specified VRF.

Question 17

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

Answer 17

Displays the BGP topology table for the specified VRF.

Question 18

IOS/IOS-XE Command:
show bgp vrf [vrf-name] vpnv4 unicast

Answer 18

Displays the BGP VRF topology table.

Question 19

IOS/IOS-XE Command:
show ip cef vrf [vrf-name] [prefix/length]

Answer 19

Displays Cisco Express Forwarding routing information for the specified prefix and length

Question 20

IOS/IOS-XE Command:
vrf definition [vrf-name]

Answer 20

Creates and enters VRF configuration mode.