Main Menu
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Events
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • SonicWall Promotions
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
SonicWall
  • Products
      All Products A–Z
      Free Trials
    • Network Security
      • Next-Generation Firewall (NGFW)
      • Network Security Services
      • Network Security Management
      • Secure SD-WAN
    • Threat Protection
      • Advanced Threat Protection Cloud
      • Advanced Threat Protection Appliance
      • Capture Labs
    • Secure Access Service Edge (SASE)
      • Zero-Trust Network Access (ZTNA)
    • Cloud Security
      • Cloud Firewall
      • Cloud App Security
    • Endpoint Security
      • Endpoint Detection & Response (EDR)
    • Email Security
      • Cloud Email Security
      • Hosted Email Security
      • On-Prem Email Security
    • Secure Access
      • Wireless Access Points
      • Network Switch
      • Virtual Private Network (VPN)
    • Wi-Fi 6 Access Points

      SonicWall SonicWave 600 series access points provide always-on, always-secure connectivity for complex, multi-device environments.

      Read More
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Network Segmentation
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure Wi-Fi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Events
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Events
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • SonicWall Promotions
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • English English English en
  • BLOG
  • CONTACT SALES
  • FREE TRIALS
  • English English English en
SonicWall
  • Products
      All Products A–Z
      Free Trials
    • Network Security
      • Next-Generation Firewall (NGFW)
      • Network Security Services
      • Network Security Management
      • Secure SD-WAN
    • Threat Protection
      • Advanced Threat Protection Cloud
      • Advanced Threat Protection Appliance
      • Capture Labs
    • Secure Access Service Edge (SASE)
      • Zero-Trust Network Access (ZTNA)
    • Cloud Security
      • Cloud Firewall
      • Cloud App Security
    • Endpoint Security
      • Endpoint Detection & Response (EDR)
    • Email Security
      • Cloud Email Security
      • Hosted Email Security
      • On-Prem Email Security
    • Secure Access
      • Wireless Access Points
      • Network Switch
      • Virtual Private Network (VPN)
    • Wi-Fi 6 Access Points

      SonicWall SonicWave 600 series access points provide always-on, always-secure connectivity for complex, multi-device environments.

      Read More
  • Solutions
    • Industries
      • Distributed Enterprises
      • Retail & Hospitality
      • K-12 Education
      • Higher Education
      • State & Local
      • Federal
      • Healthcare
      • Financial Services
      • Carriers
    • Use Cases
      • Secure SD-Branch
      • Network Segmentation
      • Zero Trust Security
      • Secure SD-WAN
      • Office 365 Security
      • SaaS Security
      • Secure Wi-Fi
    • Solutions Widgets
      • Solutions Content Widgets
        Federal

        Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions

      • Solutions Image Widgets
  • Partners
    • SonicWall Partners
      • Partners Overview
      • Find a Partner
      • Authorized Distributors
      • Technology Partners
    • Partner Resources
      • Become a Partner
      • SonicWall University
      • Training & Certification
    • Partner Widgets
      • Custom HTML : Partners Content WIdgets
        Partner Portal

        Access to deal registration, MDF, sales and marketing tools, training and more

      • Partners Image Widgets
  • Support
    • Support
      • Support Portal
      • Knowledge Base
      • Technical Documentation
      • Community
      • Video Tutorials
      • Product Life Cycle Tables
      • Partner Enabled Services
      • Contact Support
    • Resources
      • Resource Center
      • Events
      • Free Trials
      • Blog
      • SonicWall University
      • MySonicWall
    • Capture Labs
      • Capture Labs
      • Security Center
      • Security News
      • PSIRT
      • Application Catalog
    • Support Widget
      • Custom HTML : Support Content WIdgets
        Support Portal

        Find answers to your questions by searching across our knowledge base, community, technical documentation and video tutorials

      • Support Image Widgets
  • COMPANY
    • Boundless Cybersecurity
    • Press Releases
    • News
    • Events
    • Awards
    • Leadership
    • Press Kit
    • Careers
  • PROMOTIONS
    • SonicWall Promotions
    • Customer Loyalty Program
  • MANAGED SERVICES
    • Managed Security Services
    • Security as a Service
    • Professional Services
  • Contact Sales
  • Menu

SonicOS: How does ARP work when a SonicWall appliance is configured in L2 Bridge Mode?

03/26/2020 10 People found this article helpful 193,936 Views

    Download
    Print
    Share
    • LinkedIn
    • Twitter
    • Facebook
    • Email
    • Copy URL The link has been copied to clipboard

    Description

    SonicOS: How does ARP work when a SonicWall appliance is configured in L2 Bridge Mode?

    Resolution

    ARP in L2 Bridge Mode

    L2 Bridge Mode employs a learning bridge design where it will dynamically determine which hosts are on which interface of an L2 Bridge (referred to as a Bridge-Pair). ARP is passed through natively, meaning that a host communicating across an L2 Bridge will see the actual host MAC addresses of their peers. For example, the Workstation communicating with the Router (192.168.0.1) will see the router as 00:99:10:10:10:10, and the Router will see the Workstation (192.168.0.100) as 00:AA:BB:CC:DD:EE.

    This behavior allows for a SonicWall operating in L2 Bridge Mode to be introduced into an existing network with no disruption to most network communications other than that caused by the momentary discontinuity of the physical insertion.

    It should be noted that stream-based TCP protocols communications (for example, an FTP session between a client and a server) will need to be re-established upon the insertion of an L2 Bridge Mode SonicWall. This is by design so as to maintain the security afforded by stateful packet inspection (SPI); since the SPI engine can not have knowledge of the TCP connections which pre-existed it, it will drop these established packets with a log event such as TCP packet received on non-existent/closed connection; TCP packet dropped.

    Source: L2 Bridge Mode and Transparent Mode Deployment Guide 

    Related Articles

    • Identical Access Rules for different users/user groups
    • Advanced Network Security eLearning Training Course
    • Network Security Essentials eLearning Training Course

    Categories

    • Firewalls > TZ Series
    • Firewalls > SonicWall SuperMassive E10000 Series
    • Firewalls > SonicWall SuperMassive 9000 Series
    • Firewalls > SonicWall NSA Series

    Not Finding Your Answers?

    ASK THE COMMUNITY

    Was This Article Helpful?

    YESNO

    Article Helpful Form

    Article Not Helpful Form

    Company
    • Careers
    • News
    • Leadership
    • Awards
    • Press Kit
    • Contact Us
    Popular resources
    • Communities
    • Blog
    • SonicWall Capture Labs

    Stay In Touch

    • By submitting this form, you agree to our Terms of Use and acknowledge our Privacy Statement. You can unsubscribe at any time from the Preference Center.
    • This field is for validation purposes and should be left unchanged.
    • Facebook
    • Twitter
    • Linkedin
    • Youtube
    • Instagram

    © 2023 SonicWall. All Rights Reserved.

    • Legal
    • Privacy
    • English
    Scroll to top