Perhaps someone more experienced than I in Linux routing configurations
may be able to offer some advice on how to configure the route tables on
the dom0 side of the test set up outlined below. I am able to ping
successfully from the traffic generator to the interfaces configured on
the virtual router, but when traffic is started, linux is not forwarding
the packets beyond the physical NIC''s, i.e. eth2 and eth3. The packets
returned to the traffic generator, when examined with a packet sniffer,
are marked by linux as "Destination Unreachable (Host administratively
prohibited)". I have been unable to find any online documentation as
to what is being implied by that message and its possible remedies.
Your thoughts on this will be appreciated.
Traffic Generator | Linux Dom0
| Virtual Router
| Intel 82576 NIC Virtual
I/F |
|
|
1.3.0.2 --------------- 1.3.0.1 ----------------- 1.7.0.1
------------------ 1.7.0.3
| Eth2
vif[n].0 | Eth0/0
|
|
1.5.0.2 --------------- 1.5.0.1 ----------------- 1.9.0.1
----------------- 1.9.0.3
| Eth3
vif[n].1 | Eth1/0
from Dom0:
[root@localhost ios]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:15:17:46:EF:CA
inet addr:192.168.102.94 Bcast:192.168.102.95
Mask:255.255.255.224
inet6 addr: fe80::215:17ff:fe46:efca/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:135717 errors:0 dropped:0 overruns:0 frame:0
TX packets:25911 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:92639630 (88.3 MiB) TX bytes:2979222 (2.8 MiB)
Base address:0x2020 Memory:98820000-98840000
eth2 Link encap:Ethernet HWaddr 00:1B:21:24:21:04
inet addr:1.3.0.1 Bcast:1.3.0.255 Mask:255.255.255.0
inet6 addr: fe80::21b:21ff:fe24:2104/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:103993255 errors:7 dropped:0 overruns:0 frame:4
TX packets:1699 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:13715734 (13.0 MiB) TX bytes:222060 (216.8 KiB)
eth3 Link encap:Ethernet HWaddr 00:1B:21:24:21:05
inet addr:1.5.0.1 Bcast:1.5.0.255 Mask:255.255.255.0
inet6 addr: fe80::21b:21ff:fe24:2105/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:236160080 errors:4 dropped:0 overruns:0 frame:2
TX packets:4876 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3517471211 (3.2 GiB) TX bytes:704726 (688.2 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:540 errors:0 dropped:0 overruns:0 frame:0
TX packets:540 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:66558 (64.9 KiB) TX bytes:66558 (64.9 KiB)
vif6.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet addr:1.7.0.1 Bcast:1.7.0.255 Mask:255.255.255.0
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:59233 errors:0 dropped:0 overruns:0 frame:0
TX packets:861 errors:0 dropped:32 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:2736103 (2.6 MiB) TX bytes:53524 (52.2 KiB)
vif6.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
inet addr:1.9.0.1 Bcast:1.9.0.255 Mask:255.255.255.0
inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:59096 errors:0 dropped:0 overruns:0 frame:0
TX packets:657 errors:0 dropped:28 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:2727410 (2.6 MiB) TX bytes:37450 (36.5 KiB)
[root@localhost ios]# ip route show
1.9.0.0 dev vif6.1 scope link
1.7.0.0 dev vif6.0 scope link
192.168.102.64/27 dev eth0 proto kernel scope link src 192.168.102.94
1.9.0.0/24 dev vif6.1 proto kernel scope link src 1.9.0.1
1.3.0.0/24 via 1.3.0.1 dev eth2 scope link
1.3.0.0/24 dev eth2 proto kernel scope link src 1.3.0.1
1.7.0.0/24 dev vif6.0 proto kernel scope link src 1.7.0.1
1.5.0.0/24 via 1.5.0.1 dev eth3 scope link
1.5.0.0/24 dev eth3 proto kernel scope link src 1.5.0.1
169.254.0.0/16 dev eth3 scope link
default via 192.168.102.65 dev eth0
from Virtual Router:
interface Ethernet0/0
ip address 1.7.0.3 255.255.255.0
no clns route-cache
!
interface Ethernet1/0
ip address 1.9.0.3 255.255.255.0
no clns route-cache
!
ip default-gateway 192.168.102.65
!
ip classless
ip route 1.3.0.0 255.255.255.0 Ethernet0/0
ip route 1.5.0.0 255.255.255.0 Ethernet1/0
ip route 1.7.0.0 255.255.255.0 Ethernet0/0
ip route 1.9.0.0 255.255.255.0 Ethernet1/0
no ip http server
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