Hello,
i have a problem setting up equal cost multipath (ecmp) on one of my routers.
This is my network:
+------+
+---+ | | +---+
| | 192.168.2.0 | B |====| S | 192.168.1.0
+------+ | S | +------+ /==eth0===| | | W | +------+
| | | W |192.168.3.0 | |/ +------+ | I | | |
| Host |===| I |=======eth2=| A | | T |====| http |
| | | T | | |\ +------+ | C | | |
+------+ | C | +------+ \==eth1===| | | H | +------+
| H | 192.168.2.4 | C |====| |
+---+ | | +---+
+------+
Router A is the one not willing to do what he had been told to do!
IP-Layer:
network 1:
192.168.3.0/24
Host:
eth0 192.168.3.2/24 network 192.168.3.0/24
Router_A:
eth2 192.168.3.1/24 network 192.168.3.0/24
eth0 192.168.2.1/30 network 192.168.2.0/30
eth1 192.168.2.5/30 network 192.168.2.4/30
Router_B:
eth0 192.168.2.6/30 network 192.168.2.4/30
eth1 192.168.1.1/24 network 192.168.1.0/24
Router_C:
eth0 192.168.2.2/30 network 192.168.2.0/30
eth1 192.168.1.2/24 network 192.168.1.0/24
network 2:
192.168.1.0/24
http:
eth0 192.168.1.3/24 network 192.168.1.0/24
Router_A:> ifconfig
eth0 Link encap:Ethernet HWaddr 00:30:48:51:12:A6
inet addr:192.168.2.1 Bcast:192.168.2.3 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:344 errors:0 dropped:0 overruns:0 frame:0
TX packets:143 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:44594 (43.5 Kb) TX bytes:11270 (11.0 Kb)
Interrupt:10 Base address:0xd000
eth1 Link encap:Ethernet HWaddr 00:30:48:51:12:A4
inet addr:192.168.2.5 Bcast:192.168.2.7 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:128 errors:0 dropped:0 overruns:0 frame:0
TX packets:205 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:8928 (8.7 Kb) TX bytes:16342 (15.9 Kb)
Interrupt:11 Base address:0xf000
eth2 Link encap:Ethernet HWaddr 00:05:5D:E6:0D:9D
inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:213 errors:0 dropped:0 overruns:0 frame:0
TX packets:212 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:17120 (16.7 Kb) TX bytes:34306 (33.5 Kb)
Interrupt:11 Base address:0x9000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:164 errors:0 dropped:0 overruns:0 frame:0
TX packets:164 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:14884 (14.5 Kb) TX bytes:14884 (14.5 Kb)
Router_A: > ip route add default scope global equalize \
nexthop via 192.168.2.2 dev eth0 weight 1 \
nexthop via 192.168.2.130 dev eth1 weight 1
Router_A: > ip route show
192.168.2.0/30 dev eth0 proto kernel scope link src 192.168.2.1
192.168.2.4/30 dev eth1 proto kernel scope link src 192.168.2.5
192.168.3.0/24 dev eth2 proto kernel scope link src 192.168.3.1
default equalize
nexthop via 192.168.2.2 dev eth0 weight 1
nexthop via 192.168.2.6 dev eth1 weight 1 pervasive
Settings seem to be ok...
but all traffic from "Host" to "http" gets routed through gateway eth0 ;-(
There is no balancing!
What means "pervasive" after nexthop eth1 ?
can someone comment that,please ?
with regards
Holger
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