H31-161 Question #11: Real Exam Question with Answer & Explanation

Refer to the exhibit. This figure shows the MPLS L3VPN networking. CE 1 and CE 3 belong to VPN A. CE 2 and CE 4 belong to VPN B. Two MPLS TE tunnels (5 Mbit/s and 10 Mbit/s) and an LSP tunnel are set up between PE 1 and PE 2.It is expected that a tunnel policy is configured on PE 1 to distribute traffic in the three tunnels and MPLS TE tunnels are preferred. Configurations on PE1: Configuration of PE 1 # sysname PE1 # ip vpn-instance vpna route-distinguisher 100:1 tnl-policy policy1 vpn-target 111:1 export-extcommunity vpn-target 111:1 import-extcommunity # ip vpn-instance vpnb route-distinguisher 100:2 tnl-policy policy2 vpn-target 222:2 export-extcommunity vpn-target 222:2 import-extcommunity # mpls lsr-id 1.1.1.1 mplsmpls te mpls rsvp-te mpls te cspf # mpls ldp # interface Pos1/0/0 link-protocol ppp ip address 100.1.1.1 255.255.255.252 mpls mpls te mpls te max-link-bandwidth 20000 mpls te max-reservable-bandwidth 15000 mpls rsvp-te mpls ldp # interface Pos2/0/0 link-protocol ppp ip binding vpn-instance vpna ip address 10.1.1.2 255.255.255.252 # interface Pos2/0/1 link-protocol ppp ip binding vpn-instance vpnb ip address 10.2.1.2 255.255.255.252 # interface LoopBack1 ip address 1.1.1.1 255.255.255.255 # interface Tunnel1/0/1 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 2.2.2.2 mpls te tunnel-id 11 mpls te bandwidth bc0 5000 mpls te commit # interface Tunnel1/0/2 ip address unnumbered interface LoopBack1 tunnel-protocol mpls te destination 2.2.2.2mpls te tunnel-id 22 mpls te bandwidth bc0 10000 mpls te reserved-for-binding mpls te commit # bgp 100 peer 2.2.2.2 as-number 100 peer 2.2.2.2 connect-interface LoopBack1 # ipv4-family unicast undo synchronization peer 2.2.2.2 enable # ipv4-family vpnv policy vpn-target peer 2.2.2.2 enable # ipv4-family vpn-instance vpna import-route direct # ipv4-family vpn-instance vpnb import-route direct # ospf 1 opaque-capability enable area 0.0.0.0 network 100.1.1.0 0.0.0.3 network 1.1.1.1 0.0.0.0 mpls-te enable # tunnel-policy policy1 tunnel binding destination 2.2.2.2 te Tunnel1/0/2 # tunnel-policy policy2 tunnel select-seq cr-lsp lsp load-balance-number 3 # Return Under the preceding configurations, traffic cannot be distributed to the three tunnels. To implement load balancing, which of the following modifications are correct?