H12-891_V1.0 Exam Dumps - Huawei HCIE-Datacom Questions and Answers

Link aggregation enables load balancing based on data TCP or UDP ports

Link aggregation cannot be deployed across devices

Link aggregation can be applied to Both Layer 2 and Layer 3 devices

Link aggregation can only be applied to Layer 2 devices.

IcMP request for the ping, message size Z (without IP and ICMP headers)

The source IP address of the ping packet is X

The ping belongs to the VPN instance M

The ping sends Y ICMP requests

CIR=TC/BC

CIR=BE/TC

TC=CIR/BC

TC=BC/CIR

Routes match in order When a route matches to a clause, the relationship between

and is no longer matched downwards

or relationships

Routes match in order and routes need to match all sub-directions

RD can be used to control the publication of VPN routing information

On a PE device, each VPN instance corresponds to an RD value, and the RD value must be unique on the same PE device

RD is encapsulated in the Update message as an extended community attribute of BGP during delivery

After the PE receives an IPv4 route from CE, it adds an RD to the route to IPv4 that translates to a globally unique VPN-IPv4 route and publishes it on the public network

sites can be accessed each other through vPNs, and a site can only belong to a VPN

P devices only need basic MPLS forwarding capabilities and do not maintain VPN-related information

BGP/MPLSIPVPN network architecture consists of CE (Customer Edge), PE (Provider Edge) and P (Provider), of which PE and P Is a carrier device, CE is BGP/MPLSIPVPN with

Household equipment

Under normal circumstances, CE devices are not aware of the presence of VPN, and CE devices do not need to support MPLS MP-BGP, etc

LSA5

LSA2

LSA1

LSA3

Non-aggregate routes take precedence over aggregate routes.

In the case of PrefVal, Local_Preference equality, if the BGP preference of the locally generated route, IBGP route, EBGP route is equal, the valid reference of this generation is preceded by priority.

See the following entry in the BGP routing table: • *172 16 1. 11/32 0 00010 0? Indicates that the route is available non-optimal.

For next_hop unreachable routes are invalid cat by and do not participate in the preference. Flogging case

Turning on root protection on the root port takes effect

The port that turns on the root protection receives the RST BDPU with a higher priority and will enter the error-down state

It is recommended that you turn it on on a switch that is at the edge of the network

After opening the root-protected port and receiving the RSTBPDU with a higher priority, if it does not continue to receive the RSTBPDU with a higher priority for a period of time, it will return to the normal forwarding state