Foundry Networks Switch and Router Installation And Configuration Manual page 987

Los Angeles
NetIron N1
P o w e r L i n k / A c t 1 0 0 L i n k / A c t 1 0 0
F D X F D X
L i n k / A c t L i n k / A c t
C o n s o l e 1 0 0 F D X F D X 1 0 0
A c t i v i t y A c t i v i t y 1 0 1 2 1 4 1 6
L i n k L i n k 2 4 6 8
1 3 5 7 9 1 1 1 3 1 5
N e t I r o n
209.157.22.1
ServerIron S1
209.157.22.249 (VIP)
Link Link
Ac tivi ty Act ivit y
Console
Power
209.157.22.50
(ServerIron's management
IP address)
Real Real
Server R1 Server R2
Figure 26.1 Route health injection configuration
December 2000
Web client in
Los Angeles
requests
www.foundrynet.com
ISP
BigIron B1
Third-party SLB
Real
Server R3
Internet
New York
BigIron 8000
B24E B24E B8G B8G B8G B8G B8G B8GM
209.157.22.2
209.157.22.249 (VIP)
209.157.22.51
(Third-party SLB's
management
IP address)
Real
Server R4
Route Health Injection
When Los Angeles site is available,
client's gateway router
(at ISP) has path to the
www.foundrynet.com in Los Angeles:
IP address Cost Location
============================
209.157.22.249 4 Los Angeles
If Los Angeles site is unavailable,
the path ages out and is replaced by
the path to the www.foundrynet.com
in New York:
IP address Cost Location
============================
209.157.22.249 6 New York
Paris
NetIron N2
L i n k / A c t 1 0 0 L i n k / A c t 1 0 0
P o w e r F D X F D X
L i n k / A c t L i n k / A c t
C o n s o l e 1 0 0 1 0 0
F D X F D X
A c t i v i t y A c t i v i t y
L i n k L i n k 2 4 6 8 1 0 1 2 1 4 1 6
1 3 5 7 9 1 1 1 3 1 5
N e t I r o n
209.157.22.3
Real
Server R5
209.157.22.249
26 - 3