Refer to the exhibit. Tier 2 ISP A on AS 653 is connected to two Tier 1 ISPs on AS 321 and AS 51 respectively. The network architect at ISP A is planning traffic flow inside the network to provide…

The `bgp deterministic-med` command ensures that BGP deterministically compares the MED attribute among paths received from external BGP (eBGP) peers in the same autonomous system, even if they are not from the same neighbor or neighbor AS. This allows the network architect to use MED values to consistently influence inbound traffic steering and ensure all traffic exits through the desired Tier 1 ISP when CEF is disabled.

MP-BGP with 4-byte AS numbers and `bgp best path compare-routerid` are for specific advanced BGP scenarios and tie-breaking, not the primary mechanism to direct all traffic via a specific next-hop by influencing MED consistently when CEF is disabled.

`maximum-paths 2` enables Equal-Cost Multi-Path (ECMP) routing, which would split traffic across both Tier 1 ISPs, contrary to the goal of directing all traffic via one specific ISP, and it is less relevant when CEF is disabled for consistent path selection.

BGP route-reflector functionality is used to scale iBGP within an AS and `bgp always-compare-med` compares MEDs regardless of AS, but `bgp deterministic-med` is specifically for consistent MED comparison across different eBGP peers from the same AS, which is relevant here.