Differences

This shows you the differences between two versions of the page.

--- advanced-firewall [2023/05/28 04:26] – [Firewall] hogwild
+++ advanced-firewall [2023/05/28 04:34] – [Multicast] -condense, clarify IGMP Snooping hogwild
@@ Line 55: / Line 55: @@
 **Enable quick leave** - This is a feature of IGMP v2 and later. Enabling this allows the router to stop streaming multicast to an IP address as soon as that device sends a "quick leave" IGMP packet.
-**Custom Configuration** - This option allows you to set up advanced parameters for the IGMP proxy daemon. Please consult the official IGMP documentation before finalizing these settings.\\   \\
+**Custom Configuration** - This option allows you to set advanced parameters for the IGMP proxy daemon. Consult official IGMP documentation before using this.\\   \\
  \\ {{:pasted:20220118-190050.png}}\\  \\
@@ Line 71: / Line 71: @@
 **Udpxy port**- This specifies the port on which you can recive Udpxy information from your router.\\  \\   \\  {{:pasted:20220118-190844.png}}\\  \\
-**Efficient Multicast Forwarding (IGMP Snooping) -** IGMP snooping is a way to have the switch (part of the router) facilitating the discovery of multicast (IGMP) clients. The idea is to only multicast traffic towards ethernet ports where there's at least one group joiner (a.k.a. subscriber client). Beware, UPnP is often the only significant multicast application in use in digital home networks; therefore, multicast network misconfiguration or other deficiencies can appear as UPnP issues rather than underlying network issues. If IGMP snooping is enabled on a switch, or more commonly a wireless router/switch, it will interfere with UPnP/DLNA device discovery (SSDP) if incorrectly or incompletely configured (e.g. without an active querier or IGMP proxy), making UPnP appear unreliable. Typical scenarios observed include a server or client (e.g. smart TV) appearing after power on, and then disappearing after a few minutes (often 30 by default configuration) due to IGMP group membership expiring. On this very topic please beware of the wireless multicast forwarding under [[advanced-wireless|Advanced Wireless]]
+**Efficient Multicast Forwarding (IGMP Snooping) -** IGMP snooping allows the router's switch to facilitate discovery of IGMP clients. The goal is to send multicat multicast traffic only towards Ethernet ports with at least one multicast member(subscriber)? Use caution, as often, UPnP is often the only significant multicast application in use in digital home networks;
+therefore, multicast network misconfiguration or other deficiencies can appear as UPnP issues rather than underlying network issues. If IGMP snooping is enabled on a switch, or more commonly a wireless router/switch, it will interfere with UPnP/DLNA device discovery (SSDP) if incorrectly or incompletely configured (e.g. without an active querier or IGMP proxy), making UPnP appear unreliable. Typical scenarios observed include a server or client (e.g. smart TV) appearing after power on, and then disappearing after a few minutes (often 30 by default configuration) due to IGMP group membership expiring. On this very topic please beware of the wireless multicast forwarding under [[advanced-wireless|Advanced Wireless]]
 **Force IGMPv2** - IGMPv2 enhances the IGMP communication supporting additional messages/behavior to optimise the end-to-end communication between client and server. Possibly the most important being the "Group Leave" message which is lacking instead in IGMP v1.\\   \\

FreshTomato Wiki

User Tools

Site Tools

Differences

Page Tools