[Xen-users] layer2

["Shaun R." <mailinglists@xxxxxxxxxxxxxxxx>]

Back with UML you needed to use ebtables to filter traffic on each servers 
TAP interface so that one domain could not sniff another domains traffic. 
This doesnt look to need to be done on Xen?  Whats difference, looks like 
the same setup, TAP interfaces connected to a bridge.
[root@devhost1 user]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:30:48:34:BA:0C
         inet addr:xxx.xxx.xxx.xxx  Bcast:xxx.xxx.xxx.xxx 
Mask:255.255.255.248
         inet6 addr: fe80::230:48ff:fe34:ba0c/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:3906400 errors:0 dropped:0 overruns:0 frame:0
         TX packets:4753927 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:412648167 (393.5 MiB)  TX bytes:3398279305 (3.1 GiB)

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:4032 errors:0 dropped:0 overruns:0 frame:0
         TX packets:4032 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:3442133 (3.2 MiB)  TX bytes:3442133 (3.2 MiB)

peth0     Link encap:Ethernet  HWaddr 00:30:48:34:BA:0C
         inet6 addr: fe80::230:48ff:fe34:ba0c/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:123910527 errors:0 dropped:0 overruns:0 frame:0
         TX packets:153420761 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:100
         RX bytes:3628514209 (3.3 GiB)  TX bytes:1567808703 (1.4 GiB)
         Base address:0x2000 Memory:da000000-da020000

user1.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:105854 errors:0 dropped:0 overruns:0 frame:0
         TX packets:164869 errors:0 dropped:3 overruns:0 carrier:0
         collisions:0 txqueuelen:32
         RX bytes:8660760 (8.2 MiB)  TX bytes:219635253 (209.4 MiB)

user2.0   Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
         inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:116666 errors:0 dropped:0 overruns:0 frame:0
         TX packets:196268 errors:0 dropped:8 overruns:0 carrier:0
         collisions:0 txqueuelen:32
         RX bytes:7537771 (7.1 MiB)  TX bytes:273547868 (260.8 MiB)

xenbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
         inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
         TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:0 (0.0 b)  TX bytes:468 (468.0 b)


[root@devhost1 user]# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.00304834ba0c       no              user2.0
                                                       user1.0
                                                       peth0
xenbr0          8000.000000000000       no



~Shaun



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