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Forum Discussion
VLAN
1. Two VLANs is being USED VLAN 115 AND 116 on two switches GS724T
2. VLAN 115 is Originated at SITE A and VLAN 116 is Originated at SITE C
3. SITE B is Passthrough having all the VLAN 115 and 116.
3.ISSUES
A) At SITE A the VLAN 115 signal is decoded OK but for VLAN 116 the signal is intermittent
B) At SITE C the signal for 116 I/P 1 is decoded OK but I/P 2 signal VLAN 115, the multicast signal is not able to be pooled.
QUESTIONS:
1. Is there any protocols to be enabled?
2. DOES STP make this to happen?
3. STP IS CURRENTLY ENABLE ON BOTH SWITCH.
4. There is currently no routing done on switches
4 Replies
The only signals are on the physical ethernet links, being on copper, being on fiber.
There is no difference on what is "source" or "destination" - we talk of Ethernet here.
On your hidden CHO29_0-1704526251879.png (I've seen it already because I have some special rights [unpaid, because I like to have the community active] for image moderation) you show some undefined decoders on both edge of the network, each connecting to VLAN 115 and 116, marked I/P1 and I/P2. Please share this image as part of your thread here.
Tell us more about the usage of your network. Especially if there is these decoders are feed by sources doing IPv4 or IPv6 Multicast, ICMP Multicast or MLD Snooping which must be workable on the complete data path when I have it right.
What I also don't fully understand is why the graphic does show two links, for both SWITCH A <-> SITE A each as [T]agged, and as well for both SWITCH B <-> SITE C each as [T]agged
Still don't know anything about these unknown decoders with two interfaces.
Yes, some loop condition might exist - however pure STP would cover the complete network, spanning all VLANs normally. Just enabling STP could lead to close one of these ports.
Had some Sunday morning breakfast and brunch talk in the family today. Are we facing some kind of sophisticated dual-encoders and dual-decoders here to provide 4K UHD Video -and- Dante/AES67 over multiple VLAN here? Either way, these depend heavily on
- Jumbo Frames (JF enabled)
- IGMP Snooping
- IGMP Querier
- IGMP Snooping Fast Leave
This is certainly available on the switches you have in
In case this is a multi-switch environment, PIM Routing (Sparse, Dense, or Sparse-Dense) might be required.
Ideally would be the availability of
- a dynamic multicast router port, and
- the ability for forwarding unknown multicast to multicast router ports only
Any network switch should have a backplane capacity of at least (2x Gigabit Ethernet x N) where N is the number of ports on the switch passing the video traffic. One channel of encoder video can be sent or received from each port in this switch example although full bandwidth may not be used at any one time.
The maximum distance between devices is 100m (328ft) over CAT 5e (or better) cable. This distance can be extended in increments of 100m (328ft) by using a gigabit switch as a repeater between devices. >>> appears you already have this in place
Copper to fiber adapters can extend the maximum distance between devices up to 10km through the usage. More sophisticated, newer tech does allow a single fiber connection - allowing more bandwidth, simplifying the installation.
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Not convinced the Smart Switch Series (GS724Tv4) are able to cover the requirements fully. I would like push this project (this is what it is) to the Netgear Pro AV Design Support Service Team around LaurentMa - beer and credits go to the Schumi family in Switzerland 8-) Yes, we work for food, and can be hired!
Ideas and example requirements borrowed from Visionary Solutions Inc.
Hello,
Regarding the VLAN issues you've outlined:
Protocols: Check if IGMP snooping is enabled for multicast traffic. Also, verify the status of PIM (Protocol Independent Multicast) for routing multicast traffic.
STP Influence: Spanning Tree Protocol (STP) may affect VLAN communication. Ensure that STP is configured correctly, and consider adjusting the port roles and priorities.
STP Configuration: Confirm that STP is appropriately configured on both switches. Check for any misconfigurations or inconsistencies in STP settings.
Routing Absence: Since no routing is done on switches, ensure that VLANs are properly segregated and VLAN interfaces are correctly configured, especially at SITE B for passthrough.
Investigate these areas to address the reported issues. If problems persist, further diagnostics may be necessary.
Best regards,
Michael Jordy
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