Quick question. We are doing PIM-Sparse-Dense on a VLAN interface, which has no defined IP. Since the switch is a L3, I am presuming that not assigning an IP to the VLAN INT means that it's acting as a L2 route in all intent and purpose?... However, after running the following commands, we were able to get Multicast to work: Interface Vlan 540 ip address 192.168.30.8 ip pim sparse-dense-mode no ip igmp snooping end ----> My question. After we enabled this and saw the MC packets come through, we issued a NO IP ADDRESS command (for various internal approval reasons) and the Multicast traffic continued to function. I stopped and started the Multicast stream and it worked for about 20 minutes after the IP address was removed from that VLAN Interface. Eventually the stream ceased to function after that timeframe. My question - can we establish/define a static Multicast Route (or ARP Route) to handle this 'routing' without actually assigning an IP to the Interface itself. I understand conceptually how this needs to look (I'm just not sure where it needs defining), but if there is a way to handle the request in a static table entry, that would be preferred. ARP may not be the right reference.. but I guess I just need to know if this can be done, how is the best & most effective way (besides assigning an IP to that Interface directly)? Thank you in advance!
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I have a request for the following, and am not sure if this can be achieved (and if so, I have yet to set something like this up, so I hope someone here could help me). I know that routing the two VLAN's and having them trunk to a port works, but the endpoint device is typically a switch that can recognize and manipulate tagged traffic. In this case, VLAN 1 is the default VLAN, however given that the IP's are on different subnets and they don't join anywhere else (routing wise, they are plugged into the same core, just trunked at different ports). I'm running a core switch that is sending a 802.1q Trunk with 2 VLAN's to another Cisco L3 switch. Cisco's are both 3560G's -- and the IOS supports the requested routing. One of the VLAN's is a gaming server / workstation VLAN, whilst the other is for internet bound traffic only. The two VLAN's should never cross, except in this one situation where 4 PC's on this isolated Cisco L3 switch require access to both VLAN's simultaneously. I know that on some PC's you can manually specify a VLAN ID.. but in this case, where I need one port to share traffic bound to 2 subnets.. is that possible? Is that something I can handle with InterVLAN routing or IP routing on the CORE? Is this something I can accomplish via a host file or something on the client PC... since only a number of apps are required for the "Gaming VLAN"... and if so, how do I identify the VLAN tagging that's going on in the background? VLAN 1 - is Gaming VLAN, subnet 10.10.10.X VLAN 2 - is Internet VLAN, subnet 192.168.150.X Sorry if this is a basic question, I am just not familiar with combining VLAN resources as explained... Thanks in advance for any suggestions or help!! --Brian
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