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--- cisco_configuration_ttl [2016/09/23 13:34] – [Typing in the TS Data Switch Configuration] walkeradmin
+++ cisco_configuration_ttl [2016/09/23 13:45] (current) – walkeradmin
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 ==== Cisco 3560 Configuration Guide for iSIS8000 Systems====
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-Introduction
+Introduction (download full document here {{ :cisco_configuration_guide.pdf |}} )
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@@ Line 188: / Line 188: @@
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+\\
+<color darkblue>To configure a group of interfaces, use the</color> <color red>range</color> <color darkblue>command</color>
+\\
+\\
+    interface range GigabitEthernet 0/1-12
+\\
+\\
+<file>
+!
+interface GigabitEthernet0/24
+no switchport
+ip address 10.1.4.245 255.255.255.0
+!
+interface Vlan1
+no ip address
+shutdown
+!
+interface Vlan10
+description Multicast Source
+!
+!
+ip classless
+!
+ip route 0.0.0.0 0.0.0.0 10.1.4.254
+OPTIONAL GATEWAY ADDRESS FOR VLAN 10
+!
+!
+snmp-server community public RO
+snmp-server community private RW
+!
+control-plane
+!
+!
+line con 0
+line vty 0 4
+password cisco
+line vty 5 15
+password cisco
+!
+end
+</file>\\
+\\
+After typing “end” above you will be returned to the “switch#” prompt.
+The final thing to do is to enable IGMP snooping on the switch
+\\
+\\
+IGMP snooping can be enabled on a switch to prevent a particular port being exposed to all multicasts on a network. For example suppose there where 100 5MBits multicast streams on the back plane of the switch and you connect a device with only a 10/100 baseT port then it will be unable to tune into a multicast since it will just see a mass of packets (broadcast storm). In order to prevent this the switch can listen into multicast joins and hosts and only allow specific multicast traffic to a port if a receiver attached requests it.
+\\
+\\
+IGMP snooping is normally configured as a global command but can be assigned to specific interfaces.
+To configure IGMP on for the entire switch.
+\\
+  - Enter the enable menu by typing ‘en’ <R> to get to the “switch#” prompt
+  - Type ‘conf t’ <R> to enter configure mode and enter a password if needed
+  - Type ‘ip igmp snooping’ <R> This enables IGMP snooping on all ports
+\\
+\\