Blazenet Senior Network Engineer Interview Questions, Process, and Tips

OSPF has 8 states: Down, Init, 2-Way, ExStart, Exchange, Loading, Full, and Neighbor.

• OSPF has 8 states in the adjacency process

• Down state is when the interface is not participating in OSPF

• Init state is when the router is trying to establish a neighbor relationship

• 2-Way state is when bidirectional communication is established

• ExStart state is when routers exchange initial database information

• Exchange state is when router...read more

Path selection in BGP involves choosing the best route based on various attributes like AS path length, local preference, and origin type.

• BGP uses a combination of attributes like AS path length, local preference, and origin type to select the best path.

• The path with the shortest AS path length is preferred in BGP route selection.

• Local preference is used to influence outbound traffic by assigning higher preference to c...read more

DR BDR section process in spanning tree involves the election of designated and backup designated routers.

• DR BDR stands for Designated Router and Backup Designated Router.

• In a multi-access network, DR and BDR are elected to reduce the number of adjacencies and optimize network traffic.

• The DR is responsible for sending updates to all other routers in the network.

• The BDR takes over if the DR fails.

• Election process is bas...read more

VxLAN stands for Virtual Extensible LAN, a technology used to extend Layer 2 networks over Layer 3 networks.

• VxLAN encapsulates Layer 2 Ethernet frames within Layer 3 UDP packets for transmission over IP networks.

• It uses a 24-bit identifier called the VxLAN Network Identifier (VNI) to distinguish between different virtual networks.

• VxLAN allows for up to 16 million virtual networks to coexist in the same administrative d...read more