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optical fiber solution | alsa21

Make Your 3rd-party SFP Work With Cisco Switches

Nov 26th 2015 at 6:45 PM

Nearly every designer chooses to use third-party compatible SFP transceivers to help cut down the costs on the expensive Cisco transceiver modules. However, a frequent customer problem with Cisco Catalyst line of switches is that they do not support 3rd-party SFPs. If you've just replaced your network switches and tried using any 3rd party SFPs to connect your network backbone, you'll quickly put your Cisco switch interfaces in err-disable. Thus how to avoid this becomes the major concern that internet designers have paid much attention to.

SFP-1GE-FE-E-T

Commands Enable Third-Party SFPs On Cisco Device
Theoretically, any Cisco compatible SFPs should be able to work in any network hardware. But if any error occurs, you just need to go into the IOS control panel and enter in two commands at the hash prompt.
# Service Unsupported-Transceiver
After typing this in, a warning message will be thrown up, but it won’t stop you from proceeding. Armed with this knowledge, designers can switch to third-party hardware. A second command may be necessary if the automated port shutdown needs to be disabled.

# No Errdisable Detect Cause Gbic-Invalid
Enter this command, and your Cisco switch will accept most any SFP transceivers plugged into it. This increases the number of vendors that you can use with Cisco switches.

Is It Safe to Use a Third-Party Cisco-Compatible SFP?
There are mixed feelings about this. We certainly do not recommend using third-party SFPs in production environments, however it’s most probably a cheap way out.

Many designers concern whether the 3rd-party SFP would cause damage to the Cisco switch. In our experience, if the SFP is well-made and from a reliable vendor, they will be just as dependable as the Cisco branded units, but for a fraction of the price. Optical transceivers are a very basic technology, and the chance of even a poorly-made one causing actual damage is extremely minimal. Most designers enjoy the cost-savings transceivers and the damage to the products are minimal. That’s why it’s so important to know how to force Cisco switches to ues third party SFPs

Making Cisco Switches to Use Third Party SFPs
Designers who can use different vendors for third-party SFPs will enjoy the flexibility of brand or vendors. When upgrades are needed, designers can shop around for the best and most cost-effective solution. There is a minimal chance that it will hurt your design. That’s why it’s important to know how to force Cisco switches to use third-party SFPs. When designers master this concept, they’ll be in a much better position to create designs that are cost-effective, which is beneficial for both designers and customers.

Conclusion
In fact, there is no difference between the official Cisco transceiver and a third-party plug, besides the branding and about two hundred to a few thousand us dollars. If you want your third-party SFPs working with Cisco switches, fine a reliable vendor like Fiberstore will solve all your problems. Fiberstore has a comprehensive inventory of fiber optic transceivers that are fully compatible with many major brands. For example, EX-SFP-1GE-SX, QFX-SFP-10GE-SR and SFP-1GE-FE-E-T (compatible Juniper SFP transceivers) are available at Fiberstore with more competitive prices. More discounts are available for bulk orders. Please feel free to contact us if you are interested.

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