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
