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NEW QUESTION # 19
If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?
Answer: B
NEW QUESTION # 20
An SRLB is a set of user-specified local labels reserved for SR-MPLS. These labels are locally configured and have only local significance. Therefore, they are not advertised through the IGP.
Answer: A
Explanation:
Understanding SRLB (Segment Routing Local Block)
# What is SRLB?
* SRLB (Segment Routing Local Block) is a range of local MPLS labels used by Segment Routing (SR-MPLS).
* These labels are only relevant to the local router and are not advertised to other routers.
# Key SR-MPLS Label Blocks:# SRGB (Segment Routing Global Block) - Globally significant labels shared among routers.# SRLB (Segment Routing Local Block) - Locally significant labels, not shared.
Why is the Answer TRUE?
# SRLB labels are only locally defined and are NOT distributed via IGP (OSPF or IS-IS).# They are used for local forwarding decisions within an SR-enabled router.# Only SRGB labels are advertised to ensure consistent global label assignment.
Real-World Application:
* Traffic Engineering (TE): Uses SRLB for custom local path optimizations.
* Segment Routing Networks: Ensures scalable MPLS forwarding without requiring full LDP signaling.
# Reference: Huawei HCIE-Datacom Guide - Segment Routing Label Blocks (SRGB & SRLB)
NEW QUESTION # 21
Which of the following commands are mandatory for configuring an OSPF-based SR-MPLS TE tunnel?
(Select All that Apply)
Answer: A,B,C,D
Explanation:
To configure an SR-MPLS TE tunnel based on OSPF, all four options are mandatory:
A). Configure the LSR ID - LSR ID is required as the unique identifier of the router in MPLS and TE.
B). Enable segment routing in the OSPF process view - Needed to advertise segment information (SID).
C). Enable the opaque capability - Opaque LSAs are used to carry SR and TE information in OSPF.
D). Enable MPLS TE in the OSPF process view - Ensures that TE-related attributes (e.g., bandwidth) are advertised in OSPF LSAs.
Exact Extract - Huawei HCIE-Datacom SR-MPLS TE Configuration Guide:
"To support SR-MPLS TE over OSPF, it is necessary to configure the LSR ID, enable SR and MPLS TE capabilities in OSPF, and activate the OSPF opaque capability for carrying TE and SR attributes." Reference:
Huawei SR-MPLS Deployment Guide
HCIE-Datacom Study Guide - Segment Routing and Traffic Engineering Section
NEW QUESTION # 22
IS-IS supports multi-instance and multi-process. Which of the following statements are correct about IS-IS multi-instance and multi-process?
Answer: A,B
Explanation:
IS-IS Multi-Process:
Huawei devices support runningmultiple IS-IS processes simultaneously.
These processes arecompletely independentof one another: different LSDBs, interfaces, routing tables, etc.
Each process can be associated with aseparate VPN instance, and asingle VPN instance can be served by multiple IS-IS processes.
IS-IS Multi-Instance:
One IS-IS process canrun multiple instances, typically used formulti-VPN scenarios.
However, Huawei ' s current implementation prefersone VPN per processfor clarity and control.
Based on Huawei's design:
Ais incorrect - an IS-IS processcanserve multiple VPNs in other vendors, but Huawei typically uses one process per VPN for clean separation.
Bis correct - a VPN instance can be associated withmultiple IS-IS processes.
Cis incorrect in Huawei implementation context.
Dis correct -IS-IS processes are independent.
Correct answers: B, D
Reference:Huawei HCIE-Datacom V1.0 Study Guide -Chapter: IS-IS Advanced FeaturesSection: Multi- process and VPN Association
NEW QUESTION # 23
The correct description about the prefix list is:
Answer: B,D
NEW QUESTION # 24
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