Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

LRE back-to-back

Trying to install two 2950LRE (8 ports) switches back-to-back on LRE (long reach ethernet).

Is it possible?

If yes, should the cables/wires be crossover or straight-through?

  • Other Network Infrastructure Subjects
2 REPLIES
Bronze

Re: LRE back-to-back

Q. Is it possible to connect two Cisco 575 LRE CPEs back-to-back?

No, you cannot connect two Cisco 575 LRE CPEs back-to-back. Also, you cannot connect two Cisco 2900 LRE XL switches back-to-back via the LRE ports.

The Cisco LRE product is a very-high-data-rate digital subscriber line (VDSL) based product so the Transmit (TX) and Receive (RX) use different frequency bands. The Cisco 575 CPE uses the opposite frequency band for transmission/reception compared to the Cisco 2900 LRE XL switch.

Note: There is no crossover cable for this product. The connection must be between the Cisco 575 LRE CPE and the 2900 LRE XL switch.

New Member

Re: LRE back-to-back

Thank you for the update.

148
Views
0
Helpful
2
Replies