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<p>Hi Jonathan,</p>
<div class="moz-cite-prefix">On 4/28/20 1:00 AM, Johnathan Mantey
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:7c9a2b08-1224-9828-9175-41566532602a@intel.com">
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Ratan,<br>
<br>
Can you provide more info about how you plan to implement this?<br>
</blockquote>
I am not getting, Do you mean to say how to get the per interface
gateway from system? that would be through netlink, and during
configuration we would use the systemd-networkd file configuration.<br>
<blockquote type="cite"
cite="mid:7c9a2b08-1224-9828-9175-41566532602a@intel.com"> <br>
The Redfish schemas already have a per IP addr Gateway entry,
which OBMC is ignoring. Is it better to modify the existing D-Bus
schema (i.e. versioning discussion), or just use what is presently
in existence?<br>
</blockquote>
Redfish schema are getting changed to accommodate this through the
following issue <a class="moz-txt-link-freetext" href="https://github.com/DMTF/Redfish/issues/3609">https://github.com/DMTF/Redfish/issues/3609</a>.<br>
<p>The above issue(gateway/interface) exist only for the IPv4
redfish schema, IPv6 redfish is already having default gateway per
interface <br>
</p>
<p><a class="moz-txt-link-freetext" href="http://redfish.dmtf.org/schemas/v1/EthernetInterface.v1_5_1.json#/definitions/EthernetInterface">http://redfish.dmtf.org/schemas/v1/EthernetInterface.v1_5_1.json#/definitions/EthernetInterface</a><br>
</p>
<blockquote type="cite"
cite="mid:7c9a2b08-1224-9828-9175-41566532602a@intel.com"> <br>
That said, doing as you propose melds better with how IPMI (i.e
Set LAN Configuration Parameter 12) works.<br>
<br>
As Patrick pointed out, there's no IPMI or Redfish control over
the routing metric parameter. What are your thoughts on how to
reconcile applying a metric value?<br>
</blockquote>
We will go with default metric value as today as underlying stack
tries for fallback gateway.
<blockquote type="cite"
cite="mid:7c9a2b08-1224-9828-9175-41566532602a@intel.com"> I've
long been desirous of getting Williams submission merged: <a
class="moz-txt-link-freetext"
href="https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-networkd/+/20799"
moz-do-not-send="true">https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-networkd/+/20799</a><br>
as it can be used to improve the collection of netlink stats.<br>
<br>
Redfish exacerbates this whole problem by allowing a collection of
static IP addresses (and a DHCP addr) per NIC, unlike IPMI which
was very one to one with IP addr/NIC. <br>
<br>
Thanks for investigating this and working to implement a solution.<br>
<br>
<div class="moz-cite-prefix">On 4/27/20 4:11 AM, Ratan Gupta
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:32f161d2-784e-8fe5-a00b-e9bec181a265@linux.vnet.ibm.com">
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<p>Thanks Patrick, William for sharing the feedbacks<br>
</p>
<p>I will start working on the changes.<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 4/24/20 11:15 PM, William
Kennington wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPnigKkaj5aU-3KXKsL_LxAdZg2pccXiQz0bPPb+h8RToBzotg@mail.gmail.com">
<div dir="ltr">Sounds good to me, we have needed this for a
long time because the current gateway configuration breaks
our v6 stack with multiple NICs.<br>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Apr 24, 2020 at
8:21 AM Patrick Williams <<a
href="mailto:patrick@stwcx.xyz" moz-do-not-send="true">patrick@stwcx.xyz</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">On Fri, Apr 24, 2020 at
08:36:26PM +0530, Ratan Gupta wrote:<br>
> ~~~~~~~~~~~~~<br>
> Kernel IP routing table<br>
> Destination Gateway Genmask
Flags MSS Window irtt <br>
> Iface<br>
> 0.0.0.0 19.168.2.1 0.0.0.0
UG 0 0 0 <br>
> eth0<br>
> 0.0.0.0 10.10.10.1 0.0.0.0
UG 0 0 0 <br>
> eth1<br>
> ~~~~~~~~~~~~~~<br>
> <br>
> Kernel will first try using the default gateway
having higher metric <br>
> value and then fall back to the lower.<br>
<br>
I'm not seeing us with an interface to adjust the metric
for an<br>
interface. I think we need to add that at the same time?</blockquote>
</div>
</blockquote>
<p>Not now, As per my testing if metric value is not defined and
both the routes</p>
<p>having same metric then kernel tries one after other. We can
bring the metric</p>
<p>later.<br>
</p>
<blockquote type="cite"
cite="mid:CAPnigKkaj5aU-3KXKsL_LxAdZg2pccXiQz0bPPb+h8RToBzotg@mail.gmail.com">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex"> Otherwise, I<br>
don't think we have a way to specify which interface
outside-the-subnet<br>
should go (vs today we can set the default-gateway to the
desired<br>
interface's gateway).<br>
-- <br>
Patrick Williams<br>
</blockquote>
</div>
</blockquote>
</blockquote>
<br>
<div class="moz-signature">-- <br>
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<title></title>
<font color="#1F497D"><font face="Century Gothic">Johnathan
Mantey<br>
<small>Senior Software Engineer</small><br>
<big><font color="#555555"><small><b>azad te</b><b>chnology
partners</b></small><br>
<small><font color="#1F497D"><small>Contributing to
Technology Innovation since 1992</small></font><small><br>
<font color="#1F497D">Phone: (503) 712-6764<br>
Email: <a
href="mailto:johnathanx.mantey@intel.com"
moz-do-not-send="true">johnathanx.mantey@intel.com</a></font></small><br>
</small></font></big></font></font></div>
</blockquote>
<p><font color="#1F497D"><font face="Century Gothic">Ratan</font></font></p>
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