# Digimesh AG (Aggregator Support) not updating end device DH DL

**URL:** <https://forums.digi.com/t/digimesh-ag-aggregator-support-not-updating-end-device-dh-dl/20853>\
**Category:** XBee - DigiMesh\
**Tags:** device-discovery, coordinator, digimesh\
**Created:** [October 28, 2019, 11:16am UTC](https://forums.digi.com/t/digimesh-ag-aggregator-support-not-updating-end-device-dh-dl/20853 "2019-10-28T11:16:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jrgert](https://avatars.discourse-cdn.com/v4/letter/j/ba9def/32.png) [@jrgert](https://forums.digi.com/u/jrgert)\
**Post date:** [October 28, 2019, 11:16am UTC](https://forums.digi.com/t/digimesh-ag-aggregator-support-not-updating-end-device-dh-dl/20853/1 "2019-10-28T11:16:57Z")

</div>

My coordinator and end devices are all XB9X-DM with FW 9007.

I am trying to have the aggregator/coordinator/master node broadcast it’s address to the subnodes so they know where to respond.

From the coordinator serial console, I build an ATAG command frame with the coordinator’s MAC as the parameter as follows;  
7E 00 0C 08 01 41 47 00 13 A2 00 41 8E BC 77 B7

After sending the frame the console shows a Status OK response.

None of the end devices update their DH/DL values, nor do they transmit the Aggregate Addressing Update frame out the serial port.

I have tried setting all DH/DL to 0xFFFF, discrete addresses and default. I get no discernible change.

Is this a valid use of the AG command? Does the AG command work?