sslug-teknik team mailing list archive

[sem@xxxxxxxxxxxxxx (Sven Erik Morsing)]

Hej

Jeg administrerer et skolenetværk.
Jeg bruger subnet på vlan til bl. a. 
- skolens kollegium
- skolens trådløse netværk
- skolens fastnet
- og et par mindre ting

Jeg kører xen 3.2.1.

Jeg har virtualiseret en debian squeeze; som min mainserver,

Det HAR KØRT FINT i lang tid, men pludselig er subnettet
til det faste net begyndt at opføre sig mærkeligt.
Det er faktisk blevet ubrugeligt.

Det viser sig ved aperiodisk optrædende lange svartider,
og da jeg bruger NFS-mountede brugerdirectories, fryser
maskineren hele tiden. 

Det underlige er, at de andre net kører upåklageligt.

jeg har prøvet at flytte subnettet over på et nyt VLAN
uden at det har virket. Forsøgt forskellige switchporte mm.

Jeg pinget en del rundt - hvis der er reply, mangler
der ofte sequence-numbers - der kommer perioder med
Destination host unreachable.

Jeg har forsøgt at indsætte arp-tabel manuelt.

F. eks.: Fra en kient# ldapsearch -x
- står og venter i adskillige sekunder (eller timer ud)
Når svaret kommer vælter det fint ud over skærmen.

(jeg havde mine to NICs bondet, men det har jeg nu
opgivet - men det var så ikke problemet)

Har set på tcpdump...

Det er som om der pakker, er fosvinder.

Følgende er forbundne:
XEN: xenbr20-vif2.6
sqeeze: eth6
subnet: 172.16.0.0

Jeg har  rebootet ...

Har nogen nogen ide om, hvad fejlen er?

====================================
/etc/newtwork/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
#allow-hotplug eth0
iface eth0 inet static
	address 217.60.224.194
	netmask 255.255.255.224
	network 217.60.224.192
	broadcast 217.60.224.223
	gateway 217.60.224.193
	# dns-* options are implemented by the resolvconf package, if installed
	dns-nameservers 193.162.240.5 130.226.1.4 4.2.2.1
	dns-search kristne-gym.dk

auto eth1
auto eth2
auto eth3
auto eth4
auto eth5
auto eth6


iface eth1 inet static
	address 10.10.0.1
	netmask 255.255.0.0
	network 10.10.0.0
	broadcast 10.10.255.255
	mtu 1500
	up   ip address add fec0::1:216:3eff:fe00:1/64 dev eth1
	down ip address del fec0::1:216:3eff:fe00:1/64 dev eth1

#iface eth2 inet static
iface eth6 inet static
	address 172.16.0.1
	netmask 255.255.0.0
	network 172.16.0.0
	broadcast 172.16.255.255
	mtu 1500
	up   ip address add fec0::2:216:3eff:fe00:1/64 dev eth2
	down ip address del fec0::2:216:3eff:fe00:1/64 dev eth2

iface eth3 inet static
	address 172.17.0.1
	netmask 255.255.0.0
	network 172.17.0.0
	broadcast 172.17.255.255
	mtu 1500
	up   ip address add fec0::3:216:3eff:fe00:1/64 dev eth3
	down ip address del fec0::3:216:3eff:fe00:1/64 dev eth3

iface eth4 inet static
	address 172.27.0.1
	netmask 255.255.0.0
	network 172.27.0.0
	broadcast 172.27.255.255
	mtu 1500
	up   ip address add fec0::4:216:3eff:fe00:1/64 dev eth4
	down ip address del fec0::4:216:3eff:fe00:1/64 dev eth4

iface eth5 inet static
	address 192.168.1.2
	netmask 255.255.255.0
	network 192.168.1.0
	broadcast 192.168.1.255
	mtu 1500
	up   ip address add fec0::5:216:3eff:fe00:1/64 dev eth5
	down ip address del fec0::5:216:3eff:fe00:1/64 dev eth5

#iface eth6 inet static
iface eth2 inet static
	address 172.18.0.1
	netmask 255.255.0.0
	network 172.18.0.0
	broadcast 172.18.255.255
	mtu 1500
	up   ip address add fec0::6:216:3eff:fe00:1/64 dev eth2
	down ip address del fec0::6:216:3eff:fe00:1/64 dev eth2

=============================================
XEN: interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto  lo
iface lo inet loopback

# The primary network interface
auto  eth0
iface eth0 inet manual

# The primary network interface
auto  eth1
iface eth1 inet manual


#auto  eth0.2
#iface eth0.2 inet manual
#	vlan_raw_device eth0

auto  eth0.10
iface eth0.10 inet manual
	vlan_raw_device eth0

auto  eth0.16
iface eth0.16 inet manual
	vlan_raw_device eth0

auto  eth0.17
iface eth0.17 inet manual
	vlan_raw_device eth0

auto  eth0.20
iface eth0.20 inet manual
	vlan_raw_device eth0

auto  eth0.27
iface eth0.27 inet manual
	vlan_raw_device eth0

auto  eth0.192
iface eth0.192 inet manual
	vlan_raw_device eth0


auto  xenbr217
iface xenbr217 inet static
	bridge_ports eth1
	address 217.60.224.199
	netmask 255.255.255.224
	network 217.60.224.192
	broadcast 217.60.224.223
	gateway 217.60.224.193
	bridge_stp off
	bridge_fd 0

auto  xenbr10
iface xenbr10 inet static
	bridge_ports  eth0.10
	bridge_stp off
	bridge_fd 0
	address 10.10.0.9
	netmask 255.255.0.0
	network 10.10.0.0
	broadcast 10.10.255.255

auto  xenbr16
iface xenbr16 inet static
	bridge_ports  eth0.16
	bridge_stp off
	bridge_fd 0
	address 172.18.0.9
	netmask 255.255.0.0
	network 172.18.0.0
	broadcast 172.18.255.255

auto  xenbr17
iface xenbr17 inet static
	bridge_ports  eth0.17
	bridge_stp off
	bridge_fd 0
	address 172.17.0.9
	netmask 255.255.0.0
	network 172.17.0.0
	broadcast 172.17.255.255

auto  xenbr20
iface xenbr20 inet static
	bridge_ports  eth0.20
	bridge_stp off
	bridge_fd 0
	address 172.16.0.9
	netmask 255.255.0.0
	network 172.16.0.0
	broadcast 172.16.255.255

auto  xenbr27
iface xenbr27 inet static
	bridge_ports  eth0.27
	bridge_stp off
	bridge_fd 0
	address 172.27.0.9
	netmask 255.255.0.0
	network 172.27.0.0
	broadcast 172.27.255.255

auto  xenbr192
iface xenbr192 inet static
	bridge_ports  eth0.192
	bridge_stp off
	bridge_fd 0
	address 192.168.1.9
	netmask 255.255.255.0
	network 192.168.1.0
	broadcast 192.168.1.255

#allow-hotplug eth0
#iface eth0 inet static
#	address 217.60.224.199
#	netmask 255.255.255.224
#	network 217.60.224.192
#	broadcast 217.60.224.223
#	gateway 217.60.224.193
#	# dns-* options are implemented by the resolvconf package, if installed
#	dns-nameservers 130.226.1.4 193.162.240.5
#	dns-search kristne-gym.dk
#

-- 
Sven Erik Morsing
Det kristne Gymnasium