Ensurepass

QUESTION 221

Which Cisco IOS command displays the export VPN route target value of a VRF?

 

A.

show ip vrf all

B.

show ip vrf route-targets all

C.

show ip vrf summary

D.

show ip vrf interfaces

E.

show ip vrf detail

F.

show ip vrf

 

Correct Answer: E

Explanation:

The show ip vrf [{detail | interfaces}] vrf-name command shows detailed configurations about the VRF.

Pesaro# show ip vrf detail Customer_A

VRF Customer_A; default RD 100:101

Interfaces:

Loopback101 Loopback111

Connected addresses are not in global routing table

Export VPN route-target communities

RT:100:1001

Import VPN route-target communities

RT:100:1001

No import route-map

No export route-map

Pesaro# show ip vrf interfaces

Interface IP-Address VRF Protocol

Loopback101 200.0.6.1 Customer_A up

Loopback111 200.1.6.1 Customer_A up

Loopback102 200.0.6.1 Customer_B up

 

 

QUESTION 222

Which two requirements to deploy 6PE and 6VPE solutions are mandatory? (Choose two.)

 

A.

MPLS is enabled on the core, distribution, and edge devices.

B.

A triple stack is enabled on PE devices.

C.

The network has at least six PE devices.

D.

A dual stack is enabled on all the P and PE devices in a network.

 

Correct Answer: AD

Explanation:

http://www.cisco.com/en/US/docs/wireless/asr_901/Configuration/Guide/6pe_6vpe.html

 

 

QUESTION 223

Which statement about implementing the Cisco IPv6 provider Edge Router over MPLS is true?

 

A.

6PE feature is supported over tunnels other than RSVP-TE tunnels.

B.

Core MPLS routers are supporting IPv6 only.

C.

6PE feature is not supported over tunnels other than RSVP-TE tunnels.

D.

Core MPLS routers are supporting IPv4 only.

 

Correct Answer: C

Explanation:

Reference: http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-over_mpls.pdf

The following restrictions apply when implementing the IPv6 Provider Edge Router over MPLS (6PE) feature:

Core MPLS routers are supporting MPLS and IPv4 only, so they cannot forw
ard or create any IPv6 Internet Control Message Protocol (ICMP) messages.

Load balancing ability is not provided by Cisco 6PE between an MPLS path and an IPv6 path. If both are available, the MPLS path is always preferred. Load balancing between two MPLS paths is possible. BGP multipath is not supported for Cisco 6PE routes. If two BGP peers advertise the same prefix with an equal cost, Cisco 6PE will use the last route to cross the MPLS core.

6PE feature is not supported over tunnels other than RSVP-TE tunnels.

 

 

 

QUESTION 224

Refer to the exhibit. Which IPv6 deployment feature is displayed?

 

clip_image002

 

A.

MPLS 6PE

B.

MPLS 6VPE

C.

6 to 4 Replay Service

D.

native IPv6 over MPLS

E.

6 to 4 Tunnel

 

Correct Answer: A

 

 

QUESTION 225

Identify the differences of option 10A, as opposed to option 10C, for interAS vpn offerings For option 10A? (Choose three).

 

A.

Greater scalability is offered

B.

The ASBR holds VPNv4 routes

C.

Relative technical simplicity is offered

D.

Lower relative security is offered

E.

Multihop eBGP between ASBRs is utilized

F.

Better suitability for InterProvider VPNs is provided

 

Correct Answer: BCF

 

 

QUESTION 226

In Multicast VPN (MVPN) implementations, which two of the following statements are regarding the Default MDT Group? (Choose two).

 

A.

It is used for PIM control traffic.

B.

It is optionally configured for a high bandwidth multicast source to reduce multicast traffic replication to uninterested PE routers.

C.

Within the VRF configuration in the PE router, multiple Default MDT groups are configured so each VRF can support multiple multicast sources.

D.

There is a reduced multicast state in the MPLS core P routers.

E.

When multicast traffic exceeds a certain configured threshold, traffic from the Data MDT is switched to the Default MDT to conserve bandwidth.

 

Correct Answer: AD

Explanation:

MVPN supports two MDT types:

Default MDT–The default MDT is a permanent channel for PIM control messages and low-bandwidth streams between all PE routers in a particular multicast domain. All multicast traffic in the default MDT is replicated to every other PE router in the domain. Each PE router is logically seen as a PIM neighbor (one hop away) from every other PE router in the domain.

Data MDT–Data MDTs are optional. If enabled, they are dynamically created to provide optimal paths for high-bandwidth transmissions, such as full-motion video, that do not need to be sent to every PE router. This allows for on-demand forwarding of high-bandwidth traffic between PE routers, so as to avoid flooding every PE router with every high-bandwidth stream that might be created.

 

 

QUESTION 227

What is the proper MP-BGP configuration between the shown PE routers to implement MPLS VPNs on PER2?

 

clip_image004

 

A.

None of the above

B.

router bgp 1

neighbor 50.0.0.4 remote-as 1

neighbor 50.0.0.4 update-source Loopback0

no auto-summary

!

address-family ipv4

neighbor 50.0.0.4 activate

neighbor 50.0.0.4 send-community extended

exit-address-family

C.

router bgp 1

neighbor 50.0.0.4 remote-as 1

neighbor 50.0.0.4 update-source Loopback0

no auto-summary

!

address-family vpnv4

neighbor 50.0.0.4 activate

neighbor 50.0.0.4 send-community extended

exit-address-family

D.

router bgp 1

neighbor 50.0.0.4 remote-as 1

neighbor 50.0.0.4 update-source Loopback0

no auto-summary

!

address-family vpnv4 unicast multicast

neighbor 50.0.0.4 activate

neighbor 50.0.0.4 send-community extended

exit-address-family

 

Correct Answer: C

 

 

QUESTION 228

Refer to the exhibit. Which IPv6 deployment feature is displayed?

 

clip_image006

 

A.

MPLS 6PE

B.

MPLS 6VPE

C.

6 to 4 Replay Service

D.

native IPv6 over MPLS

E.

6 to 4 Tunnel

 

Correct Answer: B

 

 

QUESTION 229

Which option describes a benefits of IPv6 VPN Provider Edge?

 

A.

Provider support for intra-AS and CSC scenarios

B.

Uses separate signaling plane, which provides more security than IPv4

C.

BGP is the preferred routing protocol for connecting two SPs.

D.

No requirement for a separate signaling plane

 

Correct Answer: D

 

 

 

 

QUESTION 230

Which two statements about VPNv4 address are true? (Choose two.)

 

A.

The VPNv4 address is 128 bits long with a 128-bit long subnet mask

B.

The VPNv4 address consists of an RD and an IPv4 address.

C.

The VPNv4 address is 96 bits long with a 64-bit long subnet mask.

D.

The VPNv4 address is 128 bits long with a 64-bit long subnet mask.

E.

The VPNv4 address consists of an RT and an IPv4 address.

F.

The VPNv4 address is 96 bits long with a 32-bit long subnet mask

 

Correct Answer: BF

 

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