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CCNP SP english WARISSON GOMES > Segment Routing Flashcards 1.0 > Flashcards

Segment Routing Flashcards 1.0

1
Q

A Prefix-SID can only be associated with a single prefix.

A

True

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2
Q

A Prefix-SID can be assigned to any prefix, not just a /32 or /128 host prefix.

A

True

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3
Q

The SR continue operation is equivalent to the MPLS Pop operation.

A

False, Continue = Swap

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4
Q

SR Operation: Active segment is finished, next segment becomes active.

A

True

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5
Q

Node SID is not a prefix SID.

A

False

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6
Q

Node SID is a prefix SID with N flag, it must be /32 or /128.

A

True

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7
Q

Anycast SID is a prefix SID with N flag.

A

False

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8
Q

What type of SID can be used to steer traffic to a LAG?

A

L2 Adjacency SID

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9
Q

A layer 2 Adjacency-SID can be used to: - Send traffic over a specific interface of an EtherChannel, even if only one IGP adjacency is formed over that EtherChannel.

A

True

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10
Q

Which SID is used in cases where there are multiple adjacencies between nodes that are not bundled together using a LAG protocol, but you still wish to group ports together.

A

Group adj segment

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11
Q

__________ specify a group of neighbors, the resulting instruction of which is to ECMP towards those neighbors.

A

BGP Peer Set Segments

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12
Q

_________ specify a path or link to a specific neighbor and is signaled using BGP Link State.

A

BGP Peer Adjacency Segment

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13
Q

SR and non-SR nodes can coexist.

A

True

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14
Q

Complete: __________ nodes: Plain IPv6 forwarding is used. Solely based on IPv6 destination address. No SRH inspection or update is possible. Transparent and interoperable with legacy non-SR-capable nodes.

A

Non-SR transit

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15
Q

The _________ is a range of label values preserved for the manual allocation of adjacency segment identifiers (adj-SIDs). The default SRLB range is from ______ to _____

A

Segment Routing Local Block (SRLB), 15000 to 15999

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16
Q

The SRGB is advertised in the IS-IS _____ Capabilities TLV. The SR Capabilities sub-TLV is included in the _____ Capabilities TLV

A

Router for both

17
Q

The flags in the SR-Capabilities sub-TLV are as follows: ___: IPv4; if set, the router is capable of outgoing IPv4 encapsulation on all interfaces. ___ : IPv6; if set, the router is capable of outgoing IPv6 encapsulation on all interfaces.

18
Q

In the output of ‘sh isis database verbose’ what do the flags below indicate: X:0 R:0 N:1

A

Prefix is node SID

19
Q

What do the flags below indicate? Router Cap: 10.0.255.5 D:0 S:0 Segment Routing: I:1 V:0, SRGB Base: 16000 Range: 8000

A

SID for IPv4 only

20
Q

What OSPF command displays the capabilities of the router?

A

show ospf database opaque-area 4.0.0.0 self-originate

21
Q

OSPF SR: What command displays information in the database related to SR?

A

show ospf database opaque-area

22
Q

Identify among the entries below which are related to prefix SID: Type-10 Opaque Link Area Link States (Area 0) Link ID ADV Router 0.0.0 10.0.255.5 0.0.8 10.0.255.5 0.0.0 10.0.255.5 0.0.1 10.0.255.5 0.0.2 10.0.255.5 0.0.8 10.0.255.5

A

All that start with 7.x.x.x.x ext-prefix Extended Prefix LSA show ospf database opaque-area ext-prefix

23
Q

Identify among the entries below which are related to router capabilities: Type-10 Opaque Link Area Link States (Area 0) Link ID ADV Router 0.0.0 10.0.255.3 0.0.5 10.0.255.3 0.0.7 10.0.255.3 0.0.0 10.0.255.3 0.0.1 10.0.255.3 0.0.5 10.0.255.3 0.0.7 10.0.255.3

A

4.0.0.0 router-info Router Information LSA show ospf database opaque-area router-info

24
Q

Identify among the entries below which are related to transit links: Type-10 Opaque Link Area Link States (Area 0) Link ID ADV Router 0.0.0 10.0.255.3 0.0.5 10.0.255.3 0.0.7 10.0.255.3 0.0.0 10.0.255.3 0.0.1 10.0.255.3 0.0.5 10.0.255.3 0.0.7 10.0.255.3

A

8.x.x.x.x ext-link Extended Link LSA show ospf database opaque-area ext-link

25
Q

What commands to configure segment routing in OSPF?

A

segment-routing router ospf 10 segment-routing mpls segment-routing forwarding mpls address-family ipv4 unicast area 0 interface Loopback0 prefix-sid index 5

26
Q

How is a BGP prefix SID associated with a prefix?

A

Via route-policy route-policy SET-SID set label-index 11 end-policy

27
Q

Multiple IP-to-MPLS entries (LDP and SR) for the same prefix path can coexist.

A

False, it cannot

28
Q

If an unlabeled packet with destination 1.1.1.5 arrives on node 1, which label should be pushed? Both SR and LDP labels lead toward the node-originating prefix 1.1.1.5, which is node 5. By default, node 1 imposes the ___ label.

29
Q

In Segment routing incoming labels must be unique.

30
Q

The Mapping agent announces LDP labels to SR-capable nodes.

A

False, it’s the reverse.

31
Q

The Mapping agent announces SR SIDs to nodes on behalf of LDP nodes.

CCNP SP english WARISSON GOMES (41 decks)

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