I have SG300-28 switch which runs as L2 and vlan 2 as Multicast vlan for IPTV stream. But problem I have stream quality is very bad and losing a lot multicast packets.I have configured IGMP snooping and query by MAC based but multicast packets are no...

Hi I have problem with my Cisco IP phone 7861 which cant registrant with SIP server and my WiFi 8821 phones which are connected to correct WiFi network but both have common error reported TFTP. I am running Cisco ISR 4331 are voice router and SIP ser...

Hi Guys, I have on one of my project problem with VoIP router Cisco ISR 4331 and Cisco Switch SG 250 interconnection. So ISR 4331 configuration on the port g0/0/0 which is connected with SG 250 is as follow: interface GigabitEthernet0/0/1ip address 1...