Extreme Networks – RADIUS Netlogin Error about Missing VLAN

We had a bit of an oddity on an Extreme Networks SwitchEngine (XOS) switch running: 32.7.1.9patch1-26, devices connecting to a specific VLAN that should be authenticated by Netlogin (NAC) via radius were failing giving the error below. Checking the switch, the VLAN very much existed, so it was a mystery why it said it wasn’t. […]

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Enabling Multicast on Edge Network used for Multicast via Extreme Networks Fabric (Stretched VLAN)

If you have a VLAN which used as the source of multicast streams there are considerations on how it is used specifically when you are “stretching” that VLAN across the fabric, i.e. you have the VLAN and router(s) for that VLAN on a particular distribution switch pair, but then you have the VLAN stretched across […]

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Multicast – PIM, RP, BSR and MSDP for Multicast Across Routed Networks

Multicast is a networking method used to efficiently transmit data to multiple recipients simultaneously. Unlike unicast (one-to-one) and broadcast (one-to-all) communication, multicast is a one-to-many or many-to-many method where data is sent only to devices that are interested in receiving it, rather than to all devices on a network. In multicast, devices that want to […]

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Multicast – IGMP Snooping and IGMP Querier – Sender and Reciever(s) in same VLAN/Layer 2 Segment

Multicast is a networking method used to efficiently transmit data to multiple recipients simultaneously. Unlike unicast (one-to-one) and broadcast (one-to-all) communication, multicast is a one-to-many or many-to-many method where data is sent only to devices that are interested in receiving it, rather than to all devices on a network. In multicast, devices that want to […]

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SLPP Guard – Simple Loop Prevention Protocol Configuration for Edge Ports (XOS/SwitchEngine)

On VOSS/FabricEngine SLPP should be configured on every VLAN at the point where it leaves the fabric and meets a non-fabric loop prevention strategy.  This will prevent any loops from impacting the fabric by closing down ports where a loop is detected. The below assumes you already have SLPP configured on your upstream switches. If […]

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Extreme Networks Out-of-Band (OOB) Management Port Fails EXOS 31.7.2.28-patch1-75

At the time of writing (29/03/2024) the recommended EXOS (SwitchEngine) version for the X450-g2, X460-g2 and 5420 (as well as other hardware) is EXOS 31.7.2.28-patch1-75. We recently purchased some new 5420 switches and are upgrading some existing X450-g2 and X460-g2 to the latest recommended software versions. However we have identified an issue that currently at […]

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Clearing a Trial Licence (XOS/SwitchEngine)

A trial licence is fine for testing some stuff, but if you need to remove it, for example when it causes you issues in a stack when the master thinks it on perimeter, but the backup is not. Remove Licence (Option 1) https://extreme-networks.my.site.com/ExtrArticleDetail?n=000001267 Remove Licence (Option 2) https://extreme-networks.my.site.com/ExtrArticleDetail?an=000092952 Verify Current Licence Removing Stacking Licence Level

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