Hi!
I got some strange problem with routing loadbalancing.
I cannot get the full speed from my ISPs until I get some big files from
close ftp server.
I have server with one connection to internal network and 3 to ISPs:
__________
| eth1|---- ISP1
| |
internal--|eth0 eth2|---- ISP2
net | |
(~300 | eth3|---- ISP3
hosts |_________|
I have done everything as described in LARTC, chapter 4.2
The main rule looks like that (the weight reflects link speed/100):
ip route add default scope global \
nexthop via $ISP1_GATEWAY dev eth1 weight 12 \
nexthop via $ISP2_GATEWAY dev eth2 weight 10 \
nexthop via $ISP3_SPRINT_GATEWAY dev eth3 weight 20
Total bandwidth available is 4.2 Mbit.
After I restart the server I can get 2.0Mbit maximum, with first link 5%
utilized, and the second link and the third about 50%.
When I get some big files from close ftp server (4 x linux kernel =
~80MB) the links start to work normal, reaching 75-100% utilization. All
those big files go via the first link.
Can someone possibly explain that and teach me how to get full speed
without such shamanism?
Szymon Miotk
