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Author Topic: Core to edge  (Read 1477 times)

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Offline subnet11

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Core to edge
« on: February 21, 2016, 01:29:52 PM »
Hello All,

I have a question regarding vlacp : I have a (avaya) core and a edge switch that i want to connect via wireless (bridge mode). I enabled vlacp on both ends but can't see that that the connection gets operational.
Tried :
- Long / Short timers on both ends
- Added mac address on both ends

No luck. Should the bridge be 802.3ad compatibility in order to work ? That is the only thing what i can think of.

Any ideas ?


Offline Telair

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Re: Core to edge
« Reply #1 on: February 22, 2016, 11:45:00 AM »
What is the equipment and software each side is running?  Also, there are two different MAC configurations you should use depending on if the equipment is directly connected to each other.  Or as you have, an intermediary "carrier" network.  I'll have to dig in to the doc's to find the different MAC addresses when I get some time later today hopefully.  You must not use LACP on any link that will run VLACP.  They don't work together.

Offline subnet11

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Re: Core to edge
« Reply #2 on: February 22, 2016, 12:26:46 PM »
Hello Telair,

Both ends are avaya switches, and we are using VLACP to partner. For e.g. if i connect with a cable (Fiber to fiber or rj45 to rj45) then the switches are being partnered. The bridge is not going via a Carrier network, it is inhouse.
I have an other type of bridge that support 802.1ad and when I connect that, then the link works also.
Which technology should the bridge support in order te make this work ?



Offline subnet11

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Re: Core to edge
« Reply #3 on: February 22, 2016, 05:02:24 PM »
Should the bridge support 802.1q passthrough?

Offline Telair

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Re: Core to edge
« Reply #4 on: February 22, 2016, 05:26:02 PM »
Ah-ha...  Found it.

For directly connected point-to-point links.  Use reserved multicast VLACP MAC 01-80-C2-00-00-0f .  Ensures packet is not flooded across a defaulted switch. 

For end to end connections traversing intermediate networks.  Use default VLACP MAC 01-80-C2-00-11-00 .

If the bridge supports 802.3ad then it should in theory support VLACP, since VLACP is just the LACP's hello mechanism pulled from the original protocol.  802.1q is only needed if your moving tagged VLAN's across this bridge as well.