What are two characteristics of load-balancing implementation on a Junos device? (Choose two.)
What are two characteristics of load-balancing implementation on a Junos device? (Choose two.)
Load balancing on a Junos device involves distributing packets to achieve efficient network traffic management. It primarily balances packets on a per-flow basis to maintain session integrity by ensuring that all packets of the same flow take the same path. Additionally, it is enabled through a policy, requiring explicit configuration to define how the traffic should be balanced. This approach is crucial for both performance and reliability, ensuring balanced resource utilization and consistent delivery of network services.
I think all of them are correct. By default the load balance between ecmp are enable. You can configure per packet style using a policy and you can configure per flow style to the router in the forwarding-options. Checks the links: https://www.juniper.net/documentation/en_US/junos/topics/usage-guidelines/policy-configuring-per-flow-load-balancing-based-on-hash-values.html https://www.juniper.net/documentation/en_US/junos/topics/usage-guidelines/policy-configuring-per-packet-load-balancing.html
No, Answer is correct. Though Juniper routers supports configuration for per packet load balancing, but internally they do per flow load balancing. Routers if get multiple path towards a destination, it usually install a single path in the forwarding table and not all. To do actual load balancing, you have to define a policy and apply to the forwarding table.
modern devices use per-flow LB old devices use per-packet LB but the syntax configuration is the same per-packet (the internal functionality change)
In Junos OS, you enable per-flow load balancing by setting the load-balance per-packet action in the routing policy configuration. The naming may be counter-intuitive, because in Junos, per-packet load balancing is functionally equivalent to what other vendors may term per-flow load balancing. To configure per-packet load balancing, include the load-balance per-packet statement either as an option of the route-filter statement at the [edit policy-options policy-statement policy-name term term-name from] hierarchy level: Wright answers policy and per packet