SFP – IT Blog

DDM Port X optic module RX power exceeded the low warning/alarm threshold

One day, one of the DES-3200-28 B1 switches began to write the following in the logs:

Solution of error “The transceiver type is not supported by port hardware” on HP A5800

I noticed once on the switch HP A5800 Series Switch JC103A, when inserting the module Foxgate SFP-1SM-1550nm-10SC (10km), the following error:

%Apr 26 12:18:56:384 2000 HP OPTMOD/4/MODULE_IN:
 GigabitEthernet1/0/24: The transceiver is UNKNOWN_SFP_PLUS.
%Apr 26 12:18:56:524 2000 HP OPTMOD/5/CHKSUM_ERR:
 GigabitEthernet1/0/24: The checksum of transceiver information is bad!
%Apr 26 12:18:56:674 2000 HP OPTMOD/3/TYPE_ERR:
 GigabitEthernet1/0/24: The transceiver type is not supported by port hardware!

Alternatively, you can try running the command:

transceiver phony-alarm-disable

But in my case this command did not help.
Also noticed that the error did not occur when inserting a similar module is not at 10km, but at 3km – Foxgate SFP-1SM-1550nm-3SC 3km.

The problem was solved by updating the firmware of the switch, as I did in the article – HP A5800 Firmware Upgrade
I updated the firmware from “A5800_5820X-CMW520-R1809P11” to “A5800_5820X-CMW520-R1810P13”.
After the upgrade, both modules were working and there were no errors in the console.

Connecting SFP-RJ45 Modules to the Cisco 6500

It took a couple of days ago to the Cisco Catalyst 6509-E in which there were modules only with SFP ports to connect a few links with RJ45.

Since RJ45 links are small, it was more economical to use SFP-RJ45 modules, so they were ordered.
I connected them to the ports WS-X6724-SFP, but nothing was displayed in the logs.

Let’s write commands so that Cisco does not disable ports when inserting unsupported modules:

service unsupported-transceiver
no errdisable detect cause sfp-config-mismatch
no errdisable detect cause gbic-invalid

I note that the ports WS-X6724-SFP in my case work only at 1Gb speed, so the link will not naturally rise to 100Mb or 10MB, although the Foxgate SFP-RJ45 modules that we had and support 10/100/1000.

In confirmation of this I checked the commands:

configure t
interface gigabitEthernet 1/1
speed ?

What was the opportunity to specify the speed of the port only in 1000.