Bgp Path Selection Configuration - HP MSR Series Configuration Manual

Origin
Attribute value : MED 0, localpref 100, pref-val 0, pre 255
State
Not advertised to any peers yet
The output shows the following:
• Router F 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

Network requirements
As shown in
Router A and Router C. IBGP runs between Router B and Router D, and between Router D and Router C.
OSPF is the IGP protocol in AS 200.
Configure routing policies to make Router D give priority to the route 1.0.0.0/8 learned from Router C.
Figure 69 Network diagram
Device
Router A
Router B
Configuration procedure
1. Configure IP addresses for interfaces. (Details not shown.)
2. Configure OSPF on routers B, C, and D:
# Configure Router B.
<RouterB> system-view
[RouterB] ospf
[RouterB-ospf] area 0
[RouterB-ospf-1-area-0.0.0.0] network 192.1.1.0 0.0.0.255
: igp
: valid, internal, best,
Figure 69, all routers run BGP. EBGP runs between Router A and Router B, and between
Interface
Eth1/1
S2/0
S2/1
S2/0
S2/1
IP address Device
1.0.0.0/8 Router D
192.1.1.1/24
193.1.1.1/24 Router C
192.1.1.2/24
194.1.1.2/24
235
Interface IP address
S2/0 195.1.1.1/24
S2/1 194.1.1.1/24
S2/0 195.1.1.2/24
S2/1 193.1.1.2/24