Link: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_52_se/configuration/guide/3560scg/swudld.pdf
Description: WEB† enable—Enables UDLD in normal mode on all fiber-optic ports on the switch. UDLD is disabled by default. An individual interface configuration overrides the setting of the udld enable global configuration command. For more information about aggressive and normal modes, see the “Modes of Operation” section on page 28-1.
DA: 72 PA: 71 MOZ Rank: 29
Link: https://www.cisco.com/c/en/us/support/docs/lan-switching/unidirectional-link-detection-udld/217977-configure-the-udld-protocol-feature.html
Description: WEBAug 17, 2023 · In order for UDLD to work, both devices on the link must support UDLD and have it enabled on the respective ports. Each switch port configured for UDLD sends UDLD protocol packets that contain the port device/port ID, and the neighbor device/port IDs seen by UDLD on that port.
DA: 33 PA: 5 MOZ Rank: 52
Link: https://community.cisco.com/t5/switching/udld-enable-and-udld-aggressive-what-is-the-difference/td-p/724555
Description: WEBMar 5, 2019 · UDLD Enable just detects if a link becomes Unidirectional - that is - it can send UDLD frames but cannot receive UDLD frames, but takes no action when this happens. UDLD Aggressive on the other hand shuts down the interface when it can send UDLD frames but cannot receive them and hence called aggressive because this shuts …
DA: 14 PA: 34 MOZ Rank: 47
Link: https://content.cisco.com/chapter.sjs?uri=/searchable/chapter/www.cisco.com/content/en/us/td/docs/switches/lan/catalyst2950/software/release/12-1_11_yj4/configuration/guide/lrescg/swudld.html.xml
Description: WEBUDLD is a Layer 2 protocol that enables devices connected through fiber-optic or twisted-pair Ethernet cables to monitor the physical configuration of the cables and detect when a unidirectional link exists. All connected devices must support UDLD for the protocol to successfully identify and disable unidirectional links.
DA: 43 PA: 27 MOZ Rank: 97
Link: https://content.cisco.com/chapter.sjs?uri=/searchable/chapter/www.cisco.com/content/en/us/td/docs/switches/lan/catalyst6500/ios/15-1SY/config_guide/sup2T/15_1_sy_swcg_2T/udld.html.xml
Description: WEBHow to Configure UDLD. Note • For complete syntax and usage information for the commands used in this chapter, see these publications:
DA: 55 PA: 51 MOZ Rank: 86
Link: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/15-02SG/configuration/guide/config/udld.pdf
Description: WEB† enable —Enables UDLD in normal mode on all fiber-optic interfaces on the switch. UDLD is disabled by default. An individual interface configuration overrides the setting of the udld enable global configuration command. For more information about aggressive and normal modes, see the “Operation Modes” section on page 1-3.
DA: 66 PA: 100 MOZ Rank: 100
Link: https://learningnetwork.cisco.com/s/article/unidirectional-link
Description: WEBEnable UDLD Globally (only enables on fiber-optic interfaces) SW(config)# udld { enable | aggressive } | message-time seconds } enable - Enables UDLD in normal mode; default mode
DA: 13 PA: 9 MOZ Rank: 38
Link: https://www.cyberithub.com/how-to-configure-udld-protocol-in-cisco-switches-tutorial/
Description: WEBSep 28, 2022 · Step 1: Set up the Network. Step 2: Configure UDLD Protocol. Step 3: Verify the configuration state. Conclusion. Advertisements. This article is a step-by-step guide on how to configure UDLD protocol in Cisco switches. Switches are network devices used to connect hosts in a network.
DA: 15 PA: 26 MOZ Rank: 58
Link: https://documentation.meraki.com/MS/Other_Topics/Unidirectional_Link_Detection_(UDLD)
Description: WEBApr 3, 2024 · Unidirectional Link Detection (UDLD) is a Cisco proprietary layer 2 protocol used to determine the physical status of a link. The purpose of Unidirectional Link Detection (UDLD) is to detect and deter issues that arise from Unidirectional Links.
DA: 42 PA: 70 MOZ Rank: 42
Link: https://ciscolivewem.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/25ew/configuration/guide/conf/udld.pdf
Description: WEBStep 1 Switch(config-if)# udld enable Enables UDLD on a specific interface. On a fiber-optic interface, this command overrides the udld enable global configuration command setting. Step 2 Switch# show udld interface Verifies the configuration. Command Purpose Step 1 Switch(config-if)# no udld enable Disables UDLD on a nonfiber-optic interface.
DA: 90 PA: 67 MOZ Rank: 74
