I work for a small local cable company. We recently transitioned to an all digital system. I connect all my encoders and receivers and the multiplexer to a 4948. The Apex 1500 is the multiplexer that takes the multicast video and muxes them onto a QAM. Everything works fine until I disconnect or connect something to the switch, then all the channels pixelate like crazy for about 20 seconds. What the heck is going on? Are there any other improvements I can make to my current configuration?
Valpag01#sho run
Building configuration...
Current configuration : 5585 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
service compress-config
!
hostname Valpag01
!
boot-start-marker
boot-end-marker
!
no logging console
!
username admin password 7 1313161E3B03132F39
no aaa new-model
vtp mode transparent
ip subnet-zero
ip domain-name valp.net
!
ip multicast-routing
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
power redundancy-mode redundant
!
!
!
vlan internal allocation policy ascending
!
vlan 10
name mgmt
!
vlan 20
name multicast
!
vlan 21
name multicast2
!
vlan 22
name multicast3
!
vlan 23
name multicast4
!
interface GigabitEthernet1/1
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/2
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/3
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/4
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/5
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/6
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/7
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/8
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/9
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/10
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/11
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/12
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/13
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/14
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/15
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/16
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/17
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/18
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/19
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/20
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/21
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/22
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/23
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/24
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/25
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/26
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/27
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/28
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/29
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/30
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/31
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/32
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/33
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/34
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/35
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/36
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/37
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/38
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/39
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/40
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/41
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/42
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/43
switchport trunk encapsulation dot1q
switchport trunk native vlan 2
switchport mode trunk
!
interface GigabitEthernet1/44
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
!
interface GigabitEthernet1/45
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/46
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/47
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet1/48
switchport trunk encapsulation dot1q
switchport trunk native vlan 10
switchport mode trunk
shutdown
!
interface Vlan1
no ip address
shutdown
!
interface Vlan10
ip address 172.16.110.2 255.255.255.0
!
interface Vlan20
ip address 172.16.120.1 255.255.255.0
ip pim sparse-dense-mode
ip igmp join-group 239.252.150.1
ip igmp join-group 239.252.151.1
!
interface Vlan21
ip address 172.16.121.1 255.255.255.0
ip pim sparse-dense-mode
ip igmp join-group 239.252.150.1
ip igmp join-group 239.252.151.1
!
interface Vlan22
ip address 172.16.122.1 255.255.255.0
ip pim sparse-dense-mode
ip igmp join-group 239.252.150.1
ip igmp join-group 239.252.151.1
!
interface Vlan23
ip address 172.16.123.1 255.255.255.0
ip pim sparse-dense-mode
ip igmp join-group 239.252.150.1
ip igmp join-group 239.252.151.1
!
no ip http server
!
!
!
!
!
line con 0
stopbits 1
line vty 0 4
no login
transport input telnet
!
!
end
