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Exhibit.
As shown in the figure, RTA belongs to AS 100 and has an EBGP neighbor relationship with RTC, RTD, and TTB is an IBGP neighbor of RTC, RTD, and RTE, and the four router all belong to AS 200.
(Note: The attributed not involved In the question use the default values)
1. Import route 1.1.1/32 from RTA and advertise this route to RTB by way of RTC, RTD, and RTE, respectively (suppose the three routers between is IGP, EGP, and INCOMPL:ETE, respectively. Which route will RTB prefer?
2. Suppose the preceding policy is retained. Apply inbound routing policies on RTC, RTD, and RTE so that the values of the MED attribute of route 1.1.1.32 learned by RTB are 40, and 20 respectively. Which route will RTB prefer?
3. Suppose the preceding policy is retained. Apply an inbound routing policy on RTB so that the values of the AS_ PATH attribute of route 1.1.1.1/32
Learned from RTC, RTD, and RTE are 10 20 30,and 10 20, respectively. Which route will RTB prefer?
4. Suppose the preceding policy is retained. Apply an inbound routing policy on RTB so that the values of the local-preference attribute of route 1.1.1.1.32 learned from RTC and RTE are 30 and 120 , respectively. Which route will RTB prefer.
5. Suppose the preceding policy is retained. Apply inbound policies on RTC. RTD and RTE so that the values of the preferred-value attribute of route 1.1.1.132 are 50.40 and 30 respectively. Which route will RTB prefer?
As shown I the figure, the asymmetric VLL FRR networking is used AC interfaces on PE 1, PE 2 and PE 3 are configured as follows:
Which of the following statements are the true on the condition that IGP and MPLS are configured correctly on the public network?
Which of the following statements about the MAC address learning in VPLS are true? (ACD)
Refer to the exhibit.
As shown in the figure, CE 1 and CE 3 belong to VPN-A, and CE 2 and
CE 4 belong to VPN-B. VPN-target of VPN-A is 111:1, and that of VPN-B is 222:2.Users on different VPNs are not allowed to access each other. Configuration principles are as follows:
1. On the backbone network, if a PE is connected to a CE, VPN instances need to be configured on
the PE, and an interface on the PE for connecting to the CE must be bound to a VPN instance. After
binding an interface to a VPN instance, you must configure the IP address of the interface.Between
PEs, IS-IS is configured for PE interworking, MPLS basic capabilities and MPLS LDP are configured for MPLS LSP establishment, and MP-IBGP is configured for VPN route exchange. LDP is short for Label Distribution Protocol, and IBGP is short for Interior Border Gateway Protocol.
2. A CE exchanges VPN routes with a PE over External Border Gateway Protocol (EBGP).
Which of the following configurations of PE 1 is incorrect? (A)
(1) Configure Interior Gateway Protocol (IGP) on the IS-IS+MPLS backbone network to achieve the interworking between PEs and P routers.
# Configure PE 1 as follows:
[PE 1] isis 100
[PE 1-isis-100] is-level level-2
[PE 1-isis-100] network-entity 10.1234.1234.1234.00
[PE 1] interface loopback1
[PE 1-LoopBack1] ip address 1.1.1.9 32
[PE 1-LoopBack1] isis enable
[PE 1-LoopBack1] quit
[PE 1] interface pos3/0/0
[PE 1-Pos3/0/0] ip address 172.1.1.1 24
[PE 1-Pos3/0/0] isis enable
[PE 1-Pos3/0/0] quit
(2) Configure MPLS basic capabilities and MPLS LDP for setting up LDP LSPs on the IS-IS+MPLS
backbone network.
# Configure PE 1 as follows:
[PE 1] mpls lsr-id 1.1.1.9
[PE 1] mpls
[PE 1-mpls] lsp-trigger all
[PE 1-mpls] quit
[PE 1] mpls ldp
[PE 1-mpls-ldp] quit
[PE 1] interface pos 3/0/0
[PE 1-Pos3/0/0] mpls
[PE 1-Pos3/0/0] mpls ldp
[PE 1-Pos3/0/0] quit(3) Configure VPN instances on a PE for connecting CEs to the PE.
# Configure PE 1 as follows:
[PE 1] ip vpn-instance vpna
[PE 1-vpn-instance-vpna] route-distinguisher 100:1
[PE 1-vpn-instance-vpna] vpn-target 111:1 both
[PE 1-vpn-instance-vpna] quit
[PE 1] ip vpn-instance vpnb
[PE 1-vpn-instance-vpnb] route-distinguisher 100:2
[PE 1-vpn-instance-vpnb] vpn-target 222:2 both
[PE 1-vpn-instance-vpnb] quit
[PE 1] interface gigabitethernet 1/0/0
[PE 1-GigabitEthernet1/0/0] ip binding vpn-instance vpna
[PE 1-GigabitEthernet1/0/0] ip address 10.1.1.2 24
[PE 1-GigabitEthernet1/0/0] quit
[PE 1] interface gigabitethernet 2/0/0
[PE 1-GigabitEthernet2/0/0] ip binding vpn-instance vpnb
[PE 1-GigabitEthernet2/0/0] ip address 10.2.1.2 24
[PE 1-GigabitEthernet2/0/0] quit
(4) Set up an EBGP peer relationship between a PE and a CE and import VPN routes.
# Configure PE 1 as follows:
[PE 1] bgp 100
[PE 1-bgp] ipv4-family vpn-instance vpna
[PE 1-bgp-vpna] peer 10.1.1.1 as-number 65410
[PE 1-bgp-vpna] import-route direct
[PE 1-bgp-vpna] quit
[PE 1-bgp] ipv4-family vpn-instance vpnb
[PE 1-bgp-vpnb] peer 10.2.1.1 as-number 65420
[PE 1-bgp-vpnb] import-route direct
[PE 1-bgp-vpnb] quit
(5) Set up an MP-IBGP peer relationship between PEs.
# Configure PE 1 as follows:
[PE 1] bgp 100
[PE 1-bgp] peer 3.3.3.9 as-number 100
[PE 1-bgp] peer 3.3.3.9 connect-interface loopback 1
[PE 1-bgp] ipv4-family vpnv4
[PE 1-bgp-af-vpnv4] peer 3.3.3.9 enable
[PE 1-bgp-af-vpnv4] quit
Which of the following statements about the destination addresses of packets and the Router Alert option are true?
IGMP interface group report information of VPN-Instance: public net
Ethernet6/1/1(40.1.1.1):
Total 1 IGMP Group reported
Group: 232.0.0.1
Uptime: 00:00:22
Expires: off
Last reporter: 40.1.1.3
Last-member-query-counter: 0
Last-member-query-timer-expiry: off
Group mode: include
Version1-host-present-timer-expiry: off
Version2-host-present-timer-expiry: off
Source list:
Source: 20.1.1.56
Uptime: 00:00:22
Expires: 00:05:08
Last-member-query-counter: 3
Last-member-query-timer-expiry: 00:00:01
Source: 20.1.1.57
Uptime: 00:00:22
Expires: 00:00:17
Last-member-query-counter: 3
Last-member-query-timer-expiry: 00:00:01
The preceding information shows the entry states in the IGMP interface table on Ethernet 6/1/1.
Which statement is true when IGMP sends source/group query messages?
The Huawei router is the last hop DR where the SSM Mapping function is enabled at the interface.
Some IGMPv2 hosts expect to receive (1.0.0.1, 232.1.0.1), (1.0.0.1, 232.1.0.2), and (2.0.0.1,
232.1.3.2) data. How can you satisfy the preceding requirements with the least configurations?
As shown in the figure, a CE requires access to the internet , and PE 1is connected to the gateway. Configurations on PE 1 are as follows:
PE 1 is connected to the internet gateway through interface 175.311.2 CE and CE 2 cannot ping the interface. Which of the following statements are true?
Which of the following operations will make a PE send notifications to its peer in PWE3?
In which L2VPN technology is L2VPN information transferred through the extended LDP
signaling?
Which of the following statements about the Dynamic Host Configuration Protocol (DHCP)
snooping function are true?
Exhibit.
As shown in the figure, Super VLAN is enabled on SWA (a LAN switch). The Super VLAN configuration is as follows:
Which of the following specifics the time order in which the preceding debugging information is generated?
As shown in the figure, RTA, RTB, RTC are interconnected over IS-IS, RTA,
RTD, RTE, and RTC are interconnected over OSPF. Both IS-IS and OSPF use the default costs. RSVPTE is enabled on all routers and the interfaces between these routers. The Loopback0 interface of RTC is 192.168.0.3/32 and is advertised in both OSPF and ISIS areas. 192.168.0.3/32 is also the LSR ID of MPLS. Configurations of the MPLS and tunnel on RTA:
#
mpls lsr-id 192.168.0.1
mpls
mpls te
mpls rsvp-te
mpls te cspf
interface Tunnel1/0/0
tunnel-protocol mpls te
destination 192.168.0.3
mpls te tunnel-id 1
mpls te path metric-type igp
mpls te igp metric absolute 1
mpls te commit
#
Which path will be selected when the tunnel becomes Up? What is the metric of this tunnel?
Which of the following are rules for the router to check the RPF after receiving SA messages from the MSDP?
On the IP bearer network, media and signaling packets must first be guaranteed by PQ scheduling.
The IP priority of protocol packets on the routers is 6 or 7, and these packets must also first be guaranteed. Other data packets are placed in the BE queue for scheduling. However, devices cannot be connected in inband Telnet mode if network congestion occurs. Which of the following statements are true?
Exhibit.
The figure shows the typically mode in which a common softswitch access the bearer network. VRRP is enabled on RTA and RTB. In normal cases, RTA is the VRRP master router and RTB is the VRRP is the VRRP salve router. The ETH_trunk is enabled between RTA RTB. IF VRRP is not bounded to BFD and each [parameter uses their default settings, which statement is the true when the upstream link of RTA is faulty?
Exhibit.
The preceding information shows the configurations of Ethernet 6/1/1 and ensure created based on received IGMPv2 Report messages. Which action does Ethernet 6/1/1 after receiving Leave messages for group 224.1.2.3?
Which of the following statements about the VPLS packet forwarding are true?
On the typical access network of a bearer network, a core network device connects to two
upstream CEs. CEs connect to PEs in a square shape. This access network must bear voice and
signaling services. A CE must be configured with two VPNs to separate the voice and signaling
services and ensure high security and QoS. The signaling service works in active/standby mode,
and the voice service works in load sharing mode. The VRRP must be enabled between the CEs to
terminate the signaling flow. If the network robustness is ensured and the network architecture is
rational, which of the following statements about the topological structure are true?
#
pim
c-rp Ethernet6/2/0
timer hello 100
state-refresh-interval 10
state-refresh-ttl 60
Interface Ethernet6/2/0Ip address 20.1.1.3 255.255.255.0
Pim timer hello 45
Pim dm
#
Which of the following statements are false?
TESTED 08 Oct 2024