What are three well-known mandatory BGP attributes? (Choose three.)
https://www.catchpoint.com/bgp-monitoring/bgp-attributes
BGP Attribute Categories
There are four categories of BGP attributes:
Well-known mandatory:Recognized by all BGP peers, passed to all peers, and present in all Update messages. Well-known mandatory attributes include:- Next-hop- Origin- AS PATH
Well-known discretionary:Recognized by all routers, passed to all peers, and optionally included in the Update message. Well-known discretionary attributes include:- Local Preference- Atomic Aggregate
Optional transitive:Possibly recognized by BGP routers and passed to BGP peers. Optional transitive attributes are marked as partial when not recognized. Optional transitive attributes include:- Aggregator- Community
Optional non-transitive:Possibly recognized by BGP routers but not passed to peers. Optional non-transitive attributes include:- Multi-exit discriminator (MED)- Originator ID- Cluster-ID
The three well-known mandatory BGP attributes that must be present in every BGP update message are:
Next Hop: Indicates the next hop IP address to reach the advertising BGP peer.
Origin: Indicates how the route was originated, whether it was via IGP, EGP, or incomplete.
AS Path: Lists the autonomous systems that the update has traversed.
Juniper Networks Technical Documentation on BGP Attributes
Exhibit
Referring to the exhibit, how do you verify the status of the tunnel from R1?
Exhibit
Which two statements are correct about the service provider MPLS network shown in the exhibit? (Choose two.)
Exhibit
Which type of load balancing is shown in the exhibit?
The policy statement shown in the exhibit has a term that specifies load-balance per-packet, which indicates that per-packet load balancing is being used. This means that the routing device will distribute packets out multiple paths on a per-packet basis, rather than on a per-flow (per-destination or per-source-destination pair) basis.
Juniper Networks documentation on Load Balancing: Load Balancing Overview
How does a Junos device learn about MAC addresses when II is first connected to an Ethernet LAN?
Junos devices learn about MAC addresses by examining the source MAC address of frames received on an interface and then storing these MAC addresses in the MAC address table (also known as the forwarding database) along with the interface on which the traffic was received. Reference::
Understanding Learning and Forwarding, Juniper TechLibrary
MAC Address Table Processing, Juniper TechLibrary
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