There are three NICs on my linux(kernel 2.4.13), two of
them are for adsl line(two uplinks) and the other is for NAT.
Here is my network.
+-------+ +---------+
| ISP | | ISP |
+-------+ +---------+
10.10.10.254 20.20.20.254
\ /
\ /
ppp0: 10.10.10.1 ppp1: 20.20.20.1
+------------+
| Linux |
+------------+
eth2: 172.31.0.1/16
and I tried as:
# ip route add 10.10.10.254 dev ppp0 table 200
# ip route add default via 10.10.10.254 dev ppp0 table 200
# ip route add 20.20.20.254 dev ppp1 table 100
# ip route add default via 20.20.20.254 dev ppp1 table 100
# ip route add 10.10.10.254 src 10.10.10.1 dev ppp0
RTNETLINK answers: File exists ---> error 1
# ip route add 20.20.20.254 src 20.20.20.1 dev ppp1
RTNETLINK answers: File exists
# ip route add default scope global nexthop via 10.10.10.254 nexthop
via 20.20.20.254
RTNETLINK answers: Network is unreachable ----> error 2
Why the second error is occured?
Here is my route table;
# ip route show
10.10.10.254 dev ppp0 proto kernel scope link src 10.10.10.1
20.20.20.254 dev ppp1 proto kernel scope link src 20.20.20.1
172.31.0.0/16 dev eth2 proto kernel scope link src 172.31.0.1
127.0.0.0/8 dev lo scope link
default via 10.10.10.254 dev ppp0
Why I can't set up equal cost multipath default route?
