Mailing List Archive: Running 1G on a 10G port?

On 06/01/2021 14:30, hank@interall.co.il wrote:
> Using either an ASR1001x or ASR1002x running IOS XE, is one able to
> operate a 1G link on a 10G port (SFP-10G-LR)?

Does the 10GBASE-LR optic support 1000BASE-LX? Many do not, some might.

Separately, the data sheet[1] states that the 1002-X doesn't have any
10G ports onboard, and the 1001-X's onboard 10G ports do not support 1G.

If you're using a specific 10G SPA, then now would be the time to look
up its capabilities in the relevant data sheet. :)

[1]
https://www.cisco.com/c/en/us/products/collateral/routers/asr-1000-series-aggregation-services-routers/datasheet-c78-731632.html#Productspecifications

--
Tom
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