topic RE: Should EDP be turned off on ports that are connected to access points? in ExtremeWireless (General)

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

Darrin_Tingey — Tue, 24 May 2016 22:27:00 GMT

EDP

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

Henrique — Tue, 24 May 2016 22:35:00 GMT

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.

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

Andrew_Imam — Tue, 24 May 2016 22:46:00 GMT

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.

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

Darrin_Tingey — Sat, 10 Sep 2016 00:33:00 GMT

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?

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

Stephane_Grosj1 — Sat, 10 Sep 2016 12:49:00 GMT

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

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

Darrin_Tingey — Thu, 15 Sep 2016 03:44:00 GMT

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?

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

Erik_Auerswald — Thu, 15 Sep 2016 16:54:00 GMT

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

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

Darrin_Tingey — Thu, 15 Sep 2016 18:16:00 GMT

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

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

Drew_C — Thu, 15 Sep 2016 18:16:00 GMT

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)

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

Erik_Auerswald — Thu, 15 Sep 2016 18:33:00 GMT

Hi Darrin,

you can choose the ports to run ELRP on when configuring it:
configure elrp-client periodic VLAN_NAME ports PORTS interval SECONDSErik

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

JohanHendrikx — Fri, 16 Sep 2016 15:44:00 GMT

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

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

Drew_C — Fri, 16 Sep 2016 15:44:00 GMT

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.

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

JohanHendrikx — Fri, 16 Sep 2016 15:44:00 GMT

Oke, but I meant both enabled on a port with an AP

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

Drew_C — Fri, 16 Sep 2016 15:44:00 GMT

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.

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

Stephane_Grosj1 — Fri, 16 Sep 2016 15:44:00 GMT

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