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Should EDP be turned off on ports that are connected to access points?


EDP

14 replies

Userlevel 6
Hi Darrin, since the AP won't exchange EDP packets, you should disable that on AP connected ports.

You should keep EDP enabled only if you have uplinks to devices that support EDP.

You can use LLDP instead of EDP.
Userlevel 7
Hi Darrin,

While you can certainly turn off EDP on AP ports, I wouldn't go so far as to say that it should be turned off.

Unless you are seeing an issue that is caused by EDP being turned on on the AP ports, I would leave it enabled.

-Brandon
Userlevel 3
Hi Darrin,
To add to the responses provided, EDP is normally enabled on trunk ports connecting an Extreme switch to another Extreme switch. So if it is not needed/not supported on the access points, it should be turned off on the ports connecting to the access points. As an alternative, LLDP can be used/enabled if needed and the APs are capable of supporting it.
I asked this question several months ago, however, I have not found the command to disable edp on ap ports and just haven't had a chance to get back to the question. I have found only commands to exclude in the event of a loop?
Userlevel 7
Hi,

do not confuse EDP with ELRP.

EDP is Extreme Discovery Protocol, and as the name implies, this is "only" a discovery mechanism. As an AP do not use EDP, there's no need on the switch side to enable it towards APs. Simply enter a "disable edp ports " command to turn it off.

ELRP is Extreme Loop Recovery Protocol, and this feature is intended to protect you from a loop. This feature has some configuration parameters, like exclude, to fine tune it. But this is unrelated to EDP.

Stephane
Thank you. On wireshark what I am seeing is EDP : ELRP. even on a busy access point seems like this is about half of the packets. If I understand correctly this is the Looping protocol?
Userlevel 7
Hi Darrin,

Wireshark uses the EDP&ELRP for ELRP frames well as for EDP frames. You are probably seeing ELRP frames.

You should disable ELRP from uplink ports of the access switches. The distribution or core switches can use ELRP on the downlinks. Otherwise you are needlessly flooding your network with ERLP frames.

Erik
Thank you. Is there a way to disable ELRP on individual ports?
Userlevel 7
Darrin Tingey wrote:

Thank you. Is there a way to disable ELRP on individual ports?

Hi Darrin,
Have a look at these two links. I think they'll help answer your question.
https://community.extremenetworks.com/extreme/topics/elrp-uplink-port-question
https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-ELRP-to-disable-ports (particularly the port exclusion piece)
Userlevel 7
Hi Darrin,

you can choose the ports to run ELRP on when configuring it:
configure elrp-client periodic VLAN_NAME ports PORTS interval SECONDS[/code]Erik
Userlevel 4
I read that EDP and ELRP should be disabled. If it is enabled, what kind of issues can be occurre?
Userlevel 7
Johan Hendrikx wrote:

I read that EDP and ELRP should be disabled. If it is enabled, what kind of issues can be occurre?

EDP is enabled by default. ELRP is not. There is no problem having both enabled on the same port. I run both together in our lab's management infrastructure both to help identify connections and to stop loops.
Userlevel 4
Johan Hendrikx wrote:

I read that EDP and ELRP should be disabled. If it is enabled, what kind of issues can be occurre?

Oke, but I meant both enabled on a port with an AP
Userlevel 7
Johan Hendrikx wrote:

I read that EDP and ELRP should be disabled. If it is enabled, what kind of issues can be occurre?

Gotcha - Sorry 🙂
It shouldn't cause an issue, but both protocols are unnecessary when connecting to an AP. I believe that's the main reason for the recommendation.
Userlevel 7
Johan Hendrikx wrote:

I read that EDP and ELRP should be disabled. If it is enabled, what kind of issues can be occurre?

If the AP has multiple ports and can bridge between them, ELRP might be useful.

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