F3215-HP Load Balancing Module Network Management Configuration Guide-6PW101

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AS-path : 100

Origin : igp

Attribute value : MED 0, localpref 100, pref-val 0, pre 255

State : valid, internal, best,

Not advertised to any peers yet

The output indicates the following:

{ Router E can send route information to Router B and Router C through the confederation by

establishing only an EBGP connection with Router A.

{ Router B and Router D are in the same confederation, but belong to different sub-ASs. They

obtain external route information from Router A and generate the same BGP route entries; it

seems like that they reside in the same AS although they have no direct connection in between.

BGP path selection configuration example

1. Network requirements

• In Figure 169, all devi

ces run BGP. EBGP runs between Router A and Router B, and between Router

A and Router C. IBGP runs between LB and Router B, and between LB and Router C.

• OSPF is the IGP protocol in AS 200.

• Configure routing policies to make LB give priority to the route 1.0.0.0/8 learned from Router C.

Figure 169 Network diagram

Device Interface IP address Device Interface IP address

Router A GE0

3 1.0.0.0/8

GE0

1 195.1.1.1/24

GE0

1 192.1.1.1/24

GE0

2 194.1.1.1/24

GE0/2 193.1.1.1/24 Router C GE0/1 195.1.1.2/24

Router B GE0

1 192.1.1.2/24

GE0

2 193.1.1.2/24

GE0

2 194.1.1.2/24