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NetVanta 1234<br />
STAT<br />
1 5 9 13 17 21 G1<br />
2 6 10 14 18 22 G2<br />
3 7 11 15 19 23 G3<br />
4 8 12 16 20 24 G4<br />
1 3 5 7 9 11 13 15<br />
2 4 6 8 10 12 14 16<br />
17 19 21 23<br />
18 20 22 24<br />
G1<br />
G2<br />
G3<br />
G4<br />
Example Configurations<br />
outbound to both ISPs. This prefix will prevent any routes learned by the AOS device using BGP from one<br />
ISP from being advertised to the other ISP. If default routes are only learned from the ISPs, then the<br />
potential of becoming a transit AS is not an issue. However, it is good practice to use outbound prefixes as<br />
a preventative measure for multihoming setups.<br />
AS 65001<br />
AS 65000<br />
T1<br />
65.162.109.202 /30<br />
ISP 1<br />
PPP 2<br />
eth 0/1<br />
65.162.109.201 /30<br />
208.61.209.1 /29<br />
(Public Block)<br />
PPP 1<br />
T1<br />
208.61.209.254 /30 208.61.209.253 /30<br />
ISP 2<br />
Internet<br />
AS 65002<br />
Figure 7. Load Balancing Across Multihomed Connections to Two ISPs<br />
The following configuration applies to Example 5:<br />
!<br />
ip load-sharing per-destination<br />
!<br />
interface eth 0/1<br />
ip address 208.61.209.1 255.255.255.248<br />
no shutdown<br />
!<br />
interface t1 1/1<br />
clock source line<br />
tdm-group 1 timeslots 1-24 speed 64<br />
no shutdown<br />
!<br />
interface t1 2/1<br />
clock source line<br />
tdm-group 1 timeslots 1-24 speed 64<br />
no shutdown<br />
!<br />
interface ppp 1<br />
ip address 208.61.209.254 255.255.255.252<br />
no shutdown<br />
cross-connect 1 t1 1/1 1 ppp 1<br />
!<br />
44 Copyright © 2012 <strong>ADTRAN</strong>, Inc. 61200860L1-29.4E
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