Own in, Figure 75 – H3C Technologies H3C S12500 Series Switches User Manual

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Figure 75 MED attribute

In general, BGP compares MEDs of routes received from the same AS only. You can also use the
compare-different-as-med command to force BGP to compare MED values of routes received from
different ASs.

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LOCAL_PREF
The LOCAL_PREF attribute is exchanged between IBGP peers only, and is not advertised to any
other AS. It indicates the priority of a BGP router.
LOCAL_PREF is used to determine the best route for traffic leaving the local AS. When a BGP router
obtains from several IBGP peers multiple routes to the same destination but with different next hops,

it considers the route with the highest LOCAL_PREF value as the best route. As shown in

Figure 76

traffic from AS 20 to AS 10 travels through Router C that is selected according to LOCAL_PREF.

This manual is related to the following products:

H3C S9500E Series Switches H3C MSR 5600 H3C MSR 50 H3C MSR 3600 H3C MSR 30 H3C MSR 2600 H3C MSR 20-2X[40] H3C MSR 20-1X H3C MSR 930 H3C MSR 900 H3C SecPath F5020 H3C SecPath F5040 H3C VMSG VFW1000