VLAN(3)

✨ VLAN(3) ✨

okay bestie, so this is the manual page for VLAN(3) from vlan 1.0 — yes, that's the whole vibe, we're doing network packet decoding today and honestly it's giving main character energy 💅

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🌸 NAME 🌸

packet.link.vlan — the VLAN module, periodt 🎀

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🦋 DESCRIPTION 🦋

It decodes the Virtual LAN IEEE 802.1Q/802.1ad layer. That's it, that's the whole job. Lowkey iconic of it. ✨

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👑 CLASSES 👑

💜 class VLAN(baseobj.BaseObj)

The VLAN object itself. She's the main character fr fr.

Usage:

from packet.link.vlan import VLAN

x = VLAN(pktt)

Object definition:

VLAN(
    pcp   = int,  # Priority Point Code
    dei   = int,  # Drop Eligible Indicator
    vid   = int,  # VLAN Identifier
    etype = int,  # Payload Type
    psize = int,  # Payload Data Size
)

✨ Methods defined here ✨

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__init__(self, pktt)

Constructor 🫶

It initializes the object's private data. Like, sets up her whole little world.

• pktt — Packet trace object (packet.pktt.Pktt) so this layer has access to the parent layers. She needs to know where she came from, iykyk. 🌈

__str__(self)

String representation of the object. The way she presents herself to the world 💅

So here's the thing — the representation depends on the verbose level set by debug_repr():

• If set to 0, the generic object representation is returned. Basic. No thoughts, head empty.
• If set to 1, the representation of the object is condensed:

'802.1Q VLAN pcp: 4, dei: 0, vid: 2704 '

• If set to 2, the representation of the object also includes the type of payload. She said let me give you the FULL story 🍓:

'802.1Q Virtual LAN, pcp: 4, dei: 0, vid: 2704, etype: 0x0800(IPv4)'

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🧚 FUNCTIONS 🧚

vlan_layers(pktt)

Get all the nested VLAN layers — so like stacked VLANs or QinQ, the whole squad 🌈

A Packet layer attribute is created for each VLAN layer: vlan1, vlan2, ..., and vlan. The last packet attribute is always vlan. No cap, that's just how it is. 💖

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⭐ SEE ALSO ⭐

baseobj(3), packet.link.ethernet_const(3)

Go read those too bestie, they're part of the lore 📚

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💀 BUGS 💀

No known bugs. She's flawless. Not a single red flag. 🙈✨

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🎀 AUTHOR 🎀

Jorge Mora (mora@netapp.com) — shoutout to the icon who made this 🫶👑

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and that's the whole page!! this was NFStest 3.2, dated 21 March 2023, and it's still VLAN(3) at the end of the day 💅 slay, bye bestie 💖✨🦋