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<div class="moz-cite-prefix">On 2017-10-23 09:18, Voigt, Thomas
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:14D7D289932AAA4B8D78BC796773424301C54E60@SME2000.t.thueringer-energie.intern">
<pre wrap="">Hi Marcin,
</pre>
<blockquote type="cite">
<pre wrap="">is there anyone here that uses link group on SE600/1200, software 12.1.1.x ?
</pre>
</blockquote>
<pre wrap="">
Yes, me.
</pre>
<blockquote type="cite">
<pre wrap="">- need to check if it should work if link group contains 2 ports from same card
</pre>
</blockquote>
<pre wrap="">
Yes it works.
</pre>
<blockquote type="cite">
<pre wrap="">- need to check if it should work if link group contains 2 ports from different cards
</pre>
</blockquote>
<pre wrap="">
Both cards have to be of the same type and both ports have to be the same speed.
Then: Yes, it works.
</pre>
<blockquote type="cite">
<pre wrap="">- above need to do like round-robin or some hashing to distribute outbound traffic quite equally
</pre>
</blockquote>
<pre wrap="">
As Olivier wrote, you can use the "service load-balance" commands to configure the load balancing.
But it isn't really a distribution by load. Rather a distribution by circuits. And a circuit can be a PPPoE subscriber session, a dot1q pvc or such things.
We had problems with load balancing on heavy used vlans (thousands of dhcp endpoints in one vlan) and with MPLS/VPLS traffic between 2 IP endpoints.
There was only a traffic distribution by dot1q pvc regardless, what was configured by "service load-balance". If you have a lot of traffic in ONE vlan, you will have a lot of traffic on ONE port. If this port reaches 100%, packets will be dropped.</pre>
</blockquote>
<br>
And this is the nasty part... Ok, lets say - ditribution of traffic
towards RedBack will be done by switch, so such traffic will be
properly balanced.<br>
But subscriber's outgoing traffic will not, so we can consider that
for 1 vlan towards BGP core, max RedBack SE600/1200 capacity is 10G.<br>
<br>
Not good, however still we have a space in this direction for 2-3 or
more years. I have to think about plan B (like SSR8801).<br>
<br>
Marcin<br>
<br>
<br>
<br>
<br>
<blockquote type="cite"
cite="mid:14D7D289932AAA4B8D78BC796773424301C54E60@SME2000.t.thueringer-energie.intern">
<pre wrap="">
I've managed to distribute the dot1q pvcs over the ports as I like by creating "dummy pvcs".
- if BFD is possible in such cases ?
Don't know.
- is it normal that in link-group dot1q mode - for every vlan separate link-group is automatically created ?
No.
You configure each dot1q pvc in the same link-group. Then assign this link-group to some ports:
link-group test dot1q
dot1q pvc 2
bind interface l3-interface l3-context
dot1q pvc 1101
bind interface vlan1101 l2-context
bridge profile l2-bridge
dot1q pvc 1102
bind interface vlan1102 l2-context
bridge profile l2-bridge
[...]
lacp active
port ethernet 1/1
encapsulation dot1q
link-group test
port ethernet 2/1
encapsulation dot1q
link-group test
--
Kind regards
Thomas
</pre>
</blockquote>
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