Hi,
Having a bit of a strange problem in that I have three domains running and
frequently their IP addresses no longer respond to a ping. If I try and ping
from Dom0 all is good, but it is when I try from another workstation on the LAN.
Here is my setup :-
[root@xen ~]# xm list
Name ID Mem VCPUs State Time(s)
Domain-0 0 512 1 r----- 295.2
asterisk 4 1024 1 -b---- 15.1
mailscanner 5 1536 1 -b---- 140.9
zimbra 6 2048 1 r----- 156.8
[root@xen ~]# brctl show
bridge name bridge id STP enabled interfaces
eth0 8000.001b2fc9d99e no vif6.0
vif5.0
vif4.0
peth0
virbr0 8000.000000000000 no
[root@xen ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1B:2F:C9:D9:9E
inet addr:192.168.1.99 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21b:2fff:fec9:d99e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:9530 errors:0 dropped:0 overruns:0 frame:0
TX packets:8417 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1019720 (995.8 KiB) TX bytes:1994541 (1.9 MiB)
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:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:560 (560.0 b) TX bytes:560 (560.0 b)
peth0 Link encap:Ethernet HWaddr 00:1B:2F:C9:D9:9E
inet6 addr: fe80::21b:2fff:fec9:d99e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22262 errors:0 dropped:0 overruns:0 frame:0
TX packets:23000 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:4388537 (4.1 MiB) TX bytes:7769470 (7.4 MiB)
Interrupt:19 Base address:0xac00
vif4.0 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:169 errors:0 dropped:0 overruns:0 frame:0
TX packets:1390 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:38248 (37.3 KiB) TX bytes:275159 (268.7 KiB)
vif5.0 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:3636 errors:0 dropped:0 overruns:0 frame:0
TX packets:3699 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:589378 (575.5 KiB) TX bytes:1481190 (1.4 MiB)
vif6.0 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:662 errors:0 dropped:0 overruns:0 frame:0
TX packets:1406 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:32
RX bytes:484182 (472.8 KiB) TX bytes:354572 (346.2 KiB)
virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
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:38 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:7332 (7.1 KiB)
[root@xen ~]# grep vif /etc/xen/zimbra
vif = [ ''mac=00:16:3e:c6:e3:47,ip=192.168.1.100'' ]
[root@xen ~]# grep vif /etc/xen/mailscanner
vif=[''mac=00:16:3e:e5:bd:92,ip=192.168.1.101'']
[root@xen ~]# grep vif /etc/xen/asterisk
vif=[''mac=00:16:3e:e2:5d:c0,ip=192.168.1.102'']
The MAC addresses match to what is defined in
/etc/sysconfig/networking/devices/ifcfg-eth0, and if run a arp -a from my
workstation I can see them just fine. Arping also works without a problem. Yet
if I try ping''ing them all, perhaps two will respond but not the other
one. If I connect to the domain and restart its virtual NIC it then starts to
reply to pings, but then one of the others fails.
Has anybody else seen this at all ?
Regards,
--
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--[ UxBoD ]--
2008-Mar-10 17:04 UTC
Re: [Xen-users] [SOLVED] Xen 3.2 and bridged network problem
Oops! Helps if you set proxy_arp on your Xen server ;) Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
--[ UxBoD ]--
2008-Mar-10 19:12 UTC
Re: [Xen-users] [SOLVED] Xen 3.2 and bridged network problem
Still did not work :( but I have disabled Proxy-ARP on my Cisco ASA5505 on the inside interface, so will see what happens now! Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net ----- "--[ UxBoD ]--" <uxbod@splatnix.net> wrote:> Oops! Helps if you set proxy_arp on your Xen server ;) > > Regards,-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
--[ UxBoD ]--
2008-Mar-10 20:30 UTC
Re: [Xen-users] [SOLVED] Xen 3.2 and bridged network problem
looks like that was the problem. has been stable for quite a while now. Weird network problem. Every day is always a challenge; Great :D Regards, -- --[ UxBoD ]-- // PGP Key: "curl -s http://www.splatnix.net/uxbod.asc | gpg --import" // Fingerprint: F57A 0CBD DD19 79E9 1FCC A612 CB36 D89D 2C5A 3A84 // Keyserver: www.keyserver.net Key-ID: 0x2C5A3A84 // Phone: +44 845 869 2749 SIP Phone: uxbod@sip.splatnix.net ----- "--[ UxBoD ]--" <uxbod@splatnix.net> wrote:> Still did not work :( but I have disabled Proxy-ARP on my Cisco > ASA5505 on the inside interface, so will see what happens now! > > Regards,-- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users