[SunHELP] Help Needed with Mutiple Network interfaces

Rajesh Vadde rajesh_vadde at fanniemae.com
Sat Jan 19 21:45:25 CST 2002


Hi All,
Here is our configuration:

1) Sun Fire 4800 with 4 Gigabit interface cards.
2) Two cards set for 172.18.18.X Network and other two for 172.18.19.X
Network.
3) Here is the routing table
#netstat -nr

Routing Table: IPv4
  Destination           Gateway           Flags  Ref   Use   Interface
-------------------- -------------------- ----- ----- ------ ---------
172.18.18.0          172.18.18.137         U        1    280  ge0
172.18.18.0          172.18.18.138         U        1      0  ge1
172.18.19.0          172.18.19.137         U        1    299  ge2
172.18.19.0          172.18.19.138         U        1      0  ge3
158.137.199.0        158.137.199.127       U        1    386  hme1
224.0.0.0            158.137.199.127       U        1      0  hme1
default              158.137.199.253       UG       1    241
127.0.0.1            127.0.0.1             UH       3     36  lo0

4) Here is ifconfig output:-

#ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
hme1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index
2
        inet 158.137.199.127 netmask ffffff00 broadcast 158.137.199.255
        ether 0:3:ba:7:bb:58
ge0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3

        inet 172.18.18.137 netmask ffffff00 broadcast 172.18.18.255
        ether 0:3:ba:7:bb:58
ge1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4

        inet 172.18.18.138 netmask ffffff00 broadcast 172.18.18.255
        ether 0:3:ba:7:bb:58
ge2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 5

        inet 172.18.19.137 netmask ffffff00 broadcast 172.18.19.255
        ether 0:3:ba:7:bb:58
ge3: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 6

        inet 172.18.19.138 netmask ffffff00 broadcast 172.18.19.255
        ether 0:3:ba:7:bb:58

Issues:-

1) When ever I ping the g1 and g3 interfaces from another system, I am
able to ping. But I found packets are going only on g0 and g2
interfaces. What I observed in netstat -i is output packets on g1 and g3
interfaces are very less. Even if I snoop on g1 and g3 interfaces, I do
not see any traffice on them.

Please help me in this. We want to use both the interfaces to support
our network traffic, to spread the clients all 4 interfaces.

Thanks in advance
Rajesh



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