NetworkTalk & BGP

B.1.b) ISP-A’s targeted traffic engineering repartition.

1. As said previously, we desired that each traffic zone (upload and download) to go exclusively through a specific upstream link.

2. For information, ISP-A wants to control its customer traffic by the following approach:

a. Zone-B ingress/egress traffic is coming exclusively through:
ISP-C Ebgp neighbor
: 30.30.30.127/32

b. Zone-C ingress/egress traffic is coming exclusively through:
ISP-D 2nd link (“ISP-D-Link2”) Ebgp neighbor
: 40.40.40.5/30

c. Zone-D-E ingress/egress traffic is coming exclusively through:
ISP-D 1st link (“ISP-D-Link1”) Ebgp neighbor
: 40.40.40.1/30

d. Zone-G ingress/egress traffic is coming exclusively through:
ISP-B Ebgp neighbor
: 20.20.20.85/30

3. Note: Let’s remember that for 2nd backup link, LocalPref communities values should be lower than 90. Since LocalPref peering values are 90, 86 and 85, the charge 80 can preempt the highest value 90 (80<86, 80<85, 80<90 etc.)

Table B-1

Table B-2

Table B-3

See below Figure B.6: Traffic engineering summary

 

top

Come back to Tutorial Index”