mediumMultiple Choice
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show ip bgp vpnv4 vrf RED summary
BGP router identifier 192.168.0.1, local AS number 65001 BGP table version is 5, main routing table version 5 4 network entries using 576 bytes of memory 4 path entries using 320 bytes of memory 2/1 BGP path/bestpath attribute entries using 320 bytes of memory 0 BGP route-map cache entries using 0 bytes of memory 0 BGP filter-list cache entries using 0 bytes of memory BGP using 1216 total bytes of memory BGP activity 4/0 prefixes, 4/0 paths, scan interval 60 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 10.1.1.2 4 65001 23 25 5 0 0 00:12:34 2 10.1.2.2 4 65002 18 20 5 0 0 00:10:15 1
Based on this output, which statement is correct?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Both BGP neighbors are in the Established state.
The 'show bgp vpnv4 vrf RED summary' command displays BGP neighbors for VRF RED. It shows two neighbors: 10.1.1.2 (AS 65001) and 10.1.2.2 (AS 65002). Both are in the Established state with prefixes received. The neighbor 10.1.1.2 has received 2 prefixes, and 10.1.2.2 has received 1 prefix.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Both BGP neighbors are in the Established state.
Why this is correct
The State/PfxRcd column shows numeric prefix counts (2 and 1) rather than a state name such as Idle or Active. BGP displays Established as a prefix count, confirming both neighbours completed peering and exchanged routes.
- ✗
Neighbor 10.1.2.2 is in the Idle state.
Why it's wrong here
The State/PfxRcd column shows a numeric prefix count (1) for 10.1.2.2, meaning the session reached Established and exchanged routes; Idle would display the word "Idle" with no prefix count. Idle is the initial state before TCP connection, so it would appear only if the neighbour were unreachable or misconfigured.
- ✗
The local AS number is 65002.
Why it's wrong here
The header states local AS number 65001; 65002 is the remote AS of neighbour 10.1.2.2. The local AS is the router's own autonomous system, shown once in the summary header, while the AS column lists each peer's AS.
- ✗
Neighbor 10.1.1.2 is in AS 65002.
Why it's wrong here
Neighbour 10.1.1.2 shows AS 65001 in the AS column, matching the local AS number, so it is an iBGP peer rather than AS 65002. Reading the AS column correctly matters because the neighbour in AS 65002 is 10.1.2.2.
Go deeper
Related to this question
Learn chapter
EIGRP Route Summarization and Filtering
Key term
MP-BGP for VPN
MP-BGP for VPN is an extension of the Border Gateway Protocol that carries multiple types of network layer information to enable scalable, isolated virtual private networks over a shared provider infrastructure.
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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