---
title: "tcpdump"
slug: "cli-sc-tcpdump"
updated: 2025-07-02T04:50:59Z
published: 2025-09-03T14:11:33Z
canonical: "docs.crossworkassurance.cisco.com/cli-sc-tcpdump"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossworkassurance.cisco.com/llms.txt
> Use this file to discover all available pages before exploring further.

# tcpdump

## tcpdump

tcpdump - Capture and analyze traffic sent or received on a network interface.

**Description:** Capture and displays the contents of packets sent or received on a network interface.

**Syntax:**

```
  tcpdump  {{show} |
            {export filename {capture_1 | capture_2} <url>} |
            {port <port-name>} |
            {output {filename {capture_1 | capture_2} | stdout}} |
            {filter <string>} |
            {timeout <0-300>}}
```

**Parameters:**

| Parameter | Description |
| --- | --- |
| show | List all captured files. |
| export | Export captured files to a specific URL. Only `scp://` and `sftp://` protocols are supported. |
| port | Network interface to capture. |
| output | Option to dump packet data to stdout or save to pcap files. |
| filter | Only capturing the packets that match that filter expression. Refer to [pcap-filter documentation](https://www.tcpdump.org/manpages/pcap-filter.7.html). |
| timeout | Option to configure the packet capture time. A value of 0 means to capture continuously. |

## tcpdump export

tcpdump export - Export captured PCAP files

**Description:** Export captured files to a specific url. Only scp:// and sftp:// protocols are supported.

**Syntax:**

```
  tcpdump { export filename { capture_1 | capture_2 }
          { scp | sftp }://[<user-name>:<password>@]<url> }
```

## tcpdump show

tcpdump show - Show all captured PCAP files

**Description:** Show all captured PCAP files.

**Syntax:**

```
  tcpdump show
```

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