When L1 can't solve this problem it is forwarded to L2 where we can have Network Administrator or engineer working on the Problem. They will go for Routing, switching and other workout. If still the problem exist then it is Forward to L3, But most of the Time They are taken as RND team where they do desiging and planning work.

This is the expected behavior, since L2 devices serve as backbone, they will only send L1 LSPs plus the ATT bit in order to account for all other non-L1 destinations. The L1-L2 serves as an exit point for the L1 device. Refer to the diagram below: L1 ---- L1/L2 ---- L2 (in different area). - ATT bit set from L1/L2 IS. HTH, Elvin

With a L2 VPN, the router at site A, and the router at site B, behave as if they are in the same network, and may become ospf or eigrp neighbors with each other, as if they were in the same VLAN. This is smoke and mirrors provided by the service provider, as all the frames and packets are moved across the providers network.

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I do know what a giant frame (oversized L2 frame) is and a runt (a Frame smaller then 64 bytes), but when ...

Thats where my confusion lies; I know there are Ethernet based WAN protocols, but part of my problem is I associate Ethernet with specific LAN protocols. The fact that Ethernet is a family of protocols, rather than L1 specifications always trips me up. perhaps this is just something I need to study further.

It's said that MTU is the size of the largest PDU that can be communicated. At the same time, PDU is information that is delivered as a unit among peer entities of a network. But how can L2 PDU can be delivered to its peer as an integral unit without its L2 header since L2 MTU doesn't consider the L2 header of L2 PDU.

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1, クラスタ構成のために、Fabric Interconnect の L1, L2 ポート同士を Ethernet ケーブルで接続します。 Fabric Interconnect-A の L1と、Fabric Interconnect-B の L1。Fabric Interconnect-A の L2 と、Fabric Interconnect-B の L2 同士を接続します。 2, 3つの IP アドレス - Fabric Interconnect – A

Aug 20, 2024 · Exam Description. CCNA Exam v1.1 (CCNA 200-301) is a 120-minute exam associated with the CCNA certification. This exam tests a candidate's knowledge and skills related to network fundamentals, network access, IP connectivity, IP services, security fundamentals, and automation and programmabi