I changed the xen-config.sxp..
"
# -*- sh -*-
#
# Xend configuration file.
#
# This example configuration is appropriate for an installation that
# utilizes a bridged network configuration. Access to xend via http
# is disabled.
# Commented out entries show the default for that entry, unless otherwise
# specified.
#(logfile /var/log/xen/xend.log)
#(loglevel DEBUG)
#(xend-http-server no)
(xend-unix-server yes)
#(xend-tcp-xmlrpc-server no)
#(xend-unix-xmlrpc-server yes)
#(xend-relocation-server no)
# The relocation server should be kept desactivated unless using a trusted
# network, the domain virtual memory will be exchanged in raw form without
# encryption of the communication. See also xend-relocation-hosts-allow
option
(xend-unix-path /var/lib/xend/xend-socket)
# Port xend should use for the HTTP interface, if xend-http-server is set.
#(xend-port 8000)
# Port xend should use for the relocation interface, if
xend-relocation-server
# is set.
#(xend-relocation-port 8002)
# Address xend should listen on for HTTP connections, if xend-http-server is
# set.
# Specifying 'localhost' prevents remote connections.
# Specifying the empty string '' (the default) allows all connections.
#(xend-address '')
#(xend-address localhost)
# Address xend should listen on for relocation-socket connections, if
# xend-relocation-server is set.
# Meaning and default as for xend-address above.
#(xend-relocation-address '')
# The hosts allowed to talk to the relocation port. If this is empty (the
# default), then all connections are allowed (assuming that the connection
# arrives on a port and interface on which we are listening; see
# xend-relocation-port and xend-relocation-address above). Otherwise, this
# should be a space-separated sequence of regular expressions. Any host
with
# a fully-qualified domain name or an IP address that matches one of these
# regular expressions will be accepted.
#
# For example:
# (xend-relocation-hosts-allow '^localhost$ ^.*\.example\.org$')
#
#(xend-relocation-hosts-allow '')
(xend-relocation-hosts-allow '^localhost$ ^localhost\\.localdomain$')
# The limit (in kilobytes) on the size of the console buffer
#(console-limit 1024)
##
# To bridge network traffic, like this:
#
# dom0: fake eth0 -> vif0.0 -+
# |
# bridge -> real eth0 -> the network
# |
# domU: fake eth0 -> vifN.0 -+
#
# use
#
# (network-script network-bridge)
#
# Your default ethernet device is used as the outgoing interface, by
default.
# To use a different one (e.g. eth1) use
#
# (network-script 'network-bridge netdev=eth1')
#
# The bridge is named xenbr0, by default. To rename the bridge, use
#
# (network-script 'network-bridge bridge=<name>')
#
# It is possible to use the network-bridge script in more complicated
# scenarios, such as having two outgoing interfaces, with two bridges, and
# two fake interfaces per guest domain. To do things like this, write
# yourself a wrapper script, and call network-bridge from it, as
appropriate.
#
(network-script multi-network-bridge)
# The script used to control virtual interfaces. This can be overridden on
a
# per-vif basis when creating a domain or a configuring a new vif. The
# vif-bridge script is designed for use with the network-bridge script, or
# similar configurations.
#
# If you have overridden the bridge name using
# (network-script 'network-bridge bridge=<name>') then you may wish to do
the
# same here. The bridge name can also be set when creating a domain or
# configuring a new vif, but a value specified here would act as a default.
#
# If you are using only one bridge, the vif-bridge script will discover
that,
# so there is no need to specify it explicitly.
#
(vif-script vif-bridge)
## Use the following if network traffic is routed, as an alternative to the
# settings for bridged networking given above.
#(network-script network-route)
#(vif-script vif-route)
## Use the following if network traffic is routed with NAT, as an
alternative
# to the settings for bridged networking given above.
#(network-script network-nat)
#(vif-script vif-nat)
# Dom0 will balloon out when needed to free memory for domU.
# dom0-min-mem is the lowest memory level (in MB) dom0 will get down to.
# If dom0-min-mem=0, dom0 will never balloon out.
(dom0-min-mem 256)
# In SMP system, dom0 will use dom0-cpus # of CPUS
# If dom0-cpus = 0, dom0 will take all cpus available
(dom0-cpus 0)
# Whether to enable core-dumps when domains crash.
#(enable-dump no)
# The tool used for initiating virtual TPM migration
#(external-migration-tool '')
# The interface for VNC servers to listen on. Defaults
# to 127.0.0.1 To restore old 'listen everywhere' behaviour
# set this to 0.0.0.0
#(vnc-listen '127.0.0.1')
# The default password for VNC console on HVM domain.
# Empty string is no authentication.
(vncpasswd '')
"
Note the (network-script multi-network-bridge)
the script multi-network-bridge is as follows:
"
#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=eth0
"$dir/network-bridge" "$@" vifnum=1 netdev=eth1
"
Brian Stempin wrote:
>
> I just re-read your email.
>
> To answer your most important question:
>
>> Would installing RHEL 5 and Xen while this option was NOT
>> enabled in the bios cause problems and perhaps cause this networking
>> connectivity issue im experiencing? Do I need to reinstall xen?
>
> The answer to this is "no". Enabling/disabling virtualization in the
> BIOS, to the best of my knowledge, merely toggles the processor's VT
> flag, which only affects the ability to run fully virtualized VMs (such
> as Windows). According to your config file, you're using pygrub, which
> indicates that the DomU in question is a paravirtualized VM, and thus
> not effected by the enabling/disabling of this feature.
>
> You most likely have a legit networking issue. A few questions to
> further diagnose:
> 1. Are you using any bonding? If so, could you post details?
> 2. Have you modified the stock bridge in any way? If so, how?
> 3. Have you edited any of the Xen networking scripts? If so, could you
> post your mods?
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
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