Hi!   I'm trying to get the good configuration for multicast routing and IGMP. See attached diagram. I have a source in VLAN 25 and clients in VLAN 4, routing throught the C3750X L3 switch, with 2 C2960X switches as L2.  I'm not sure If I got it corr...

Hello!   I'm currently running under VTP version 3. Somehow, I can't add another VLAN.   switch1(config)#vlan 41VTP VLAN configuration not allowed when device is not the primary server for vlan database.   Running: Cisco IOS Software, C3750E Software...

Hi!   I was wondering if in the same stack of 2 swites, if you could have 2 switches with different module type: Exemple: In switch unit 1 I would have a 4 port SFP 1gig module and in switch unit 2, a Tengig SFP 4 port module.   So, is this possible?...

Hello!   I'm trying to make the NTP synchronisation work by the management interface and vrf.    Here's my config that does not work: It doesn't even seem to get started at all...  clock protocol ntp vdc 1ip access-list copp-system-acl-ntp 10 permit ...