Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

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epaalx's avatar
epaalx
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Sep 19, 2011

multiple interfaces on a single VLAN

Hello F5'ers,   I've taken it for granted that it just works, but was questioned by a non-F5 colleague and couldn't provide qualified answer or cite documentation....   "TMOS Management Guide fo...
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epaalx's avatar
epaalx
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Sep 19, 2011
Hi Bhattman,

 

thanks, but my issue isn't with Trunks - LTM allows multiple Interfaces (multiple Trunks, too) associated with a VLAN.. The question is - how does TMM distribute outgoing traffic among the Interfaces (and Trunks)?

 

 

Re: "3. If a multicast/broadcast arrives on one interface, would F5 forward it onto second interface?" - I think I can answer this myself - as per F5 SOL9310: "By default, LTM functions as an L2-only switch, flooding frames addressed to L2 multicast addresses across all interfaces in the VLAN but the origin." Since broadcast is a general type of multicast, then for both cases, LTM will forward them onto other interfaces.

 

 

R's, Alex