# DM Light – How to capture IP packets for a specific CID (CID 2 / CID 5)?

**URL:** <https://forum.sequans.com/t/dm-light-how-to-capture-ip-packets-for-a-specific-cid-cid-2-cid-5/593>\
**Category:** LTE Cat 1 / Cat 1 bis (Calliope)\
**Created:** [September 4, 2026, 1:31pm UTC](https://forum.sequans.com/t/dm-light-how-to-capture-ip-packets-for-a-specific-cid-cid-2-cid-5/593 "2026-09-04T13:31:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![MEZIANE\_Faouzi\_OF](https://avatars.discourse-cdn.com/v4/letter/m/f07891/32.png) [@MEZIANE\_Faouzi\_OF](https://forum.sequans.com/u/MEZIANE_Faouzi_OF)\
**Post date:** [September 4, 2026, 1:31pm UTC](https://forum.sequans.com/t/dm-light-how-to-capture-ip-packets-for-a-specific-cid-cid-2-cid-5/593/1 "2026-09-04T13:31:24Z")

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Hello,

We are currently testing **IMS/VoLTE on a Calliope 2 GC02S1-EU2** , running **UE9.1.0.0 / LR9.1.0.0-64547** with the Orange operator profile.

With an Orange France SIM (HPLMN 20801), LTE attachment and IMS registration work correctly (`SIP,REGISTERED`).

With our IoT roaming SIM (HPLMN 90131), LTE attachment is successful and the IMS PDN is established, but IMS registration remains stuck in:

`+IMSSTATE: SIP,REGISTERING`

We are therefore trying to capture the IMS IP/SIP traffic using **DM Light**. We can record an EVT trace and export IPv4/IPv6 PDUs to PCAP, but we need to capture the traffic associated with specific PDP contexts, in particular **CID 2 and CID 5**.

We were advised to capture using:

`sniffpacket cid=2 dir=both`  
`sniffpacket cid=5 dir=both`

**Could someone explain how to select/change the CID used for packet capture in DM Light?**

Is `sniffpacket` a command that must be executed through DM Light, a debug console, or another Sequans tool/interface? If so, what is the correct procedure to capture both UL and DL packets for **CID 2 and CID 5** and export them to PCAP/Wireshark?

Thanks in advance for your help.

Best regards,

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<div class="post-metadata">

**Author:** ![Eros](https://avatars.discourse-cdn.com/v4/letter/e/f04885/32.png) [@Eros](https://forum.sequans.com/u/Eros)\
**Post date:** [September 7, 2026, 9:37am UTC](https://forum.sequans.com/t/dm-light-how-to-capture-ip-packets-for-a-specific-cid-cid-2-cid-5/593/2 "2026-09-07T09:37:52Z")

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Hi

Attach the DM record mask file for your capturing.

file1: DM\_record\_mask\_CID2\_CID5.dmrec =\> Both Cid 2 & Cid 5

file2: DM\_record\_mask\_CID2.dmrec =\> Cid 2 only

file3: DM\_record\_mask\_CID5.dmrec =\> Cid 5 only

Just change configuration, select file 1 or 2 or 3 ( depend on which cid you want to sniffer ),

and start recording.

After stop recording, you have EVT file, you can export to PCAP and check it by wireshark.

Attach the screen shot for your reference.

Best regards,

[DM\_record\_mask\_CID5.dmrec](https://forum.sequans.com/uploads/short-url/q1XtOgJy5XlHhhSKH6hlROniVLI.dmrec) (388 Bytes)

[DM\_record\_mask\_CID2\_CID5.dmrec](https://forum.sequans.com/uploads/short-url/cnQcMluUbmJkDjePZzpEIy5k2Z.dmrec) (414 Bytes)

[DM\_record\_mask\_CID2.dmrec](https://forum.sequans.com/uploads/short-url/hJfqRK4zvsA4N9PEfqgjOaUb6Cf.dmrec) (388 Bytes)

 ![start recording and change configuration](https://europe1.discourse-cdn.com/flex018/uploads/sqns/original/1X/ccb876fdf0aa096568430defe4f65cb8960ecf13.jpeg)

 ![Export from EVT to PCAP](https://europe1.discourse-cdn.com/flex018/uploads/sqns/original/1X/8a2ccece67f20bdf9a48ccd60ba041d5e86e21b3.png)

Eros