[c-nsp] packet loss when servers are brought online
Phil Mayers
p.mayers at imperial.ac.uk
Tue Nov 30 12:02:57 EST 2010
On 30/11/10 16:45, Christopher Hobbs wrote:
> I'm not sure that this list is the best place to post, but given that the
> issue involves a stack of 3750s, I figured I'd cover all my bases. See the
> following posts for reference:
You mention you're using iSCSI.
What utilisation rates are you hitting? The 3750 has pretty small
per-port buffers, so if you are contending one or more ports, you could
be getting packet loss due to that.
e.g. you boot a machine, it hits a disk very hard over iSCSI, causing
contention and packet loss.
Can you supply a diagram? Showing ports & vlan memberships?
Also, can you be more specific than "packet loss". Packet loss on which
path, between which two hosts?
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