there are a couple of nasty bugs in 5.1(2) with regards to peer-gateway.
peer-gateway will blackhole traffic for ipv4 and v6 if enabled in your
domain. not sure of your storage scenario -- but it sounds like your
slowly building out and may need this command in your toolbox for a
later day.
CSCtl10832 and CSCtl11424 are what you're looking for[0]
this has kept us off the upgrade path for this code and we're keeping
our fingers crossed for 5.1(3).
[0]http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/release/notes/51_nx-os_release_note.html#wp263416
q.
On 03/01/2011 11:00 PM, Martin Clifton wrote:
This problem occurred with the 7K NX-OS 5.1.1a. Upgrading to 5.1.2
resolved the problem.
Regards, Martin
---------------------------------
Martin Clifton
ITS - Networks and Computing
Victoria University
Melbourne, Australia
Phone: 03 9919 4579
---------------------------------
On 28/02/11 10:16 AM, "Martin Clifton"<[email protected]> wrote:
Hello all,
We have a pair of Nexus 7Ks at each of our two datacentres, separated by
about 10K. There is a 40G L3 connection between the cores at each site
and we run OTV over this core to provide L2 connectivity betweens the
DCs. As well as setting up new vlans on the Nexus kit (5Ks and 2Ks) we
are also using the OTV connection to transport vlans from our legacy
datacentre which is based on Cat6509s and 3750s.
I have a concern about the table that is displayed when you enter the
command "sh otv route". This table shows entries for "site" (ie local)
and "overlay" (ie other DC) mac addresses. The issue is with the
"Uptime" data. For the overlay addresses this will randomly reset to
zero and all addresses will reset to zero at the one time. The
frequency of this reset seems to be a function of the number of vlans ie
the more vlans I add to the overlay, the more often the value resets.
With 100 or more vlans the value may build up to a minute or two but will
often only get to a few seconds before resetting.
This doesn't appear to impact the functionality of OTV. But does it
indicate I have a problem ? What is it that causes the reset and why
are all the (overlay) mac addresses reset at the same time ? The
symptoms occur whether or not "otv suppress-arp-nd" is enabled or not.
Regards, Martin
---------------------------------
Martin Clifton
ITS - Networks and Computing
Victoria University
Melbourne, Australia
Phone: 03 9919 4579
---------------------------------
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