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Forum Discussion
izools
May 27, 2022Guide
Netgear M4100-50G Multicast Configuration
Really hoping someone out there can help us with this: We have a client running two M4100-50G Switches (Firmware 10.0.2.20) interconnected with LAG. They are using an application which requir...
izools
May 27, 2022Guide
OK so I've been able to glean the following information, but I don't see any traffic at all in Wireshark associated with a 237.x.x.x address on the machine hosting this application
"The following IP addresses should be white-listed on any network-based firewalls, and/or locally installed Firewall applications running on end terminals:
- 237.215.5:443
- 237.215.9:443
- 237.215.15:443
- 237.215.16:443"
So far no information on whether they're using IGMP or another protocol 🤔
schumaku
May 27, 2022Guru - Experienced User
Strange addresses 8-)
Taking the same assumption as yours, they might talk of 237.x.x.x. (237.x.x/24)
RFC5771 says on p.2/3
3. Definition of Current Assignment Practice
...
235.0.0.0 to 238.255.255.255 Reserved
...and continues on p.7...
13. Use of IANA Reserved Addresses
Applications MUST NOT use addressing in the IANA reserved blocks.
This explains in my reading why any kind if intelligent switches don't have to deak with these invalid addresses.
- izoolsMay 30, 2022Guide
Yup, I noticed that too as soon as I found documentation confirming the address range this app uses.
Thank you for your help everyone, it seems this will be down to the software vendor's developers to look at.
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