In order to advertise IPv6 routes in BGP4+, what fields are added in Update?

• A.A new path attribute: IPV6_REACH_NLRI
• B.A new NLRI type, IPv6 NLR
• C.A new path attribute: MP_REACH NLRI
• D.A new path attribute: AP_UNREACH_NLRI

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As shown in the figure, MPLS/BGP IPVPN is deployed in the network, and the MP-BGP neighbor relationship is established between PE1 and PE2 through the Loopback0 interface. After the configuration is complete, it is found that CE1 and CE2 cannot learn routes from each other. Use the command on PE2 Looking at the neighbor information as shown, what is the most likely cause of the problem?

• A.Misconfiguration of routing protocols between PE1 or PE2 and their respective CEs
• B.The VPN instance parameters on PE1 or PE2 are incorrectly configured
• C.PE1 and PE2 do not have bell neighbors enabled in the BGP-VPN4 unicast address family view
• D.The LSP tunnel between PE1 and PE2 is not established

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In the network shown in the figure below, if a remote LDP session between SWA and SWC is to be realized, which of the following statement is correct?

• A.The configuration in the figure can already be implemented
• B.Need to configure the direct connection interface to establish a TCP connection
• C.You need to create a remote peer and specify the lsr-id of the peer
• D.It is not necessary to specify the lsr-id of the correct peer

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As shown in the figure, OSPF is enabled on all interfaces of the router. The ip address marked in the figure is the IP address of the loopback0 interface. The Loopback0 of R1, R2, and R3 is advertised in area 1, and the Loopback0 of R4 is advertised in area 0, Loopback0 of R5 announces which of the following functional addresses in area 2 can ping each other?

• A.10.0.2.2 and 10.0.3.3
• B.10.0.4.4 and 10.0.2.2
• C.10.0.2.2 and 10.0.5.5
• D.10.0.3.3 and 10.0.5.5

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In the MPLS VPN network, when the data packet enters the public network and is forwarded, it will be encapsulated with two layers of MPLS labels. Which of the following description about the two layers of labels is wrong? (Multiple choice)

• A.By default, the outer label is popped before the packet is forwarded to the last hop device.
• B.The outer label of MPLS VPN is assigned by LDP protocol or statically, and the inner label is assigned by the IP BGP neighbor of the opposite end.
• C.The outer label is used to correctly send the data packet to the corresponding VPN on the PE device.
• D.The outer label of an MPLS VPN is called the private network label, and the inner label is called the public network label.

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