sudharma jain created CLOUDSTACK-9098:
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Summary: Windows VMs fail to access internet
Key: CLOUDSTACK-9098
URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9098
Project: CloudStack
Issue Type: Bug
Security Level: Public (Anyone can view this level - this is the default.)
Reporter: sudharma jain
If we deploy a Windows 2008 R2 64 bit server with 2 nics; default gateway is
shown for both the NICs.
Now, based on my findings Windows will experience issue if we have multiple
default gateway assigned as explained in "Multiple Default Gateways Can Cause
Connectivity Problems" ([https://support.microsoft.com/en-us/kb/159168]).
REPRO STEPS
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Create a Windows VM with Multiple NICs
Ensure that only one of the NICs can actually access internet (set that as
default NIC in CCP)
Try to access internet
The fix can be made using interface metric. The default automatic metric for
interfaces is 10 or 20. The lower the metric, the higher the preference to use
it. So, we have to enter metric higher than 10/20 for the interfaces we don't
want to use. This is because if Windows has multiple interfaces connected to
several networks that use DHCP, it installs default gateways for all those
interfaces. By default, Windows sets the metric of the default gateways to the
same, effectively leading to random selection of default gateway.
So from Window stand point the above mentioned issue can be resolved by setting
metric for NICs inside guest OS.
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