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HSRP on SVI (Vlan interface)

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Initial Configuration Create 4 VLANs, 10,20,30,40 Trunk between the 3 Switches or you can follow the configuration from previous lab for the 3 Switches click here create SVI for VLAN 10 on CORE1 and CORE2 CORE1(config)#int vlan 10 CORE1(config-if)#ip add 10.10.10.1 255.255.255.0 CORE1(config-if)#no shut CORE2(config)#int vlan 10 CORE2(config-if)#ip add 10.10.10.2 255.255.255.0 CORE2(config-if)#no shut configure connectivity between CORE1 and R1 on CORE1 convert L2 into L3 port to assign IP address to it CORE1(config)#int gi1/48 CORE1(config-if)#no switchport CORE1(config-if)#ip add 192.168.1.1 255.255.255.252 CORE1(config-if)#no shut R1(config)#int gi0/1 R1(config-if)#ip add 192.168.1.2 255.255.255.252 R1(config-if)#no shut configure connectivity between CORE2 and R1, CORE2 using SVI create new VLAN and it's SVI on CORE2 for this connection, assign as access port   CORE2(config)#int gi7/48 CORE2(config-if)#switchport CORE2(config-if)#switchport mode acc...
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multicast lab - GNS3

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setup the lab as below, bear in mind that multicast is depend on the routing table, so make sure all network are reachable to each other. enable the multicast routing on both router, R1 and R2 R1(config)#ip multicast-routing configure PIM on the interfaces R1 : fa0/0 and ser0/0 and R2 fa0/0 and ser0/0 R1 interface FastEthernet0/0  ip address 192.168.1.99 255.255.255.0   ip pim sparse-dense-mode  duplex auto  speed auto end interface Serial0/0  ip address 10.1.1.1 255.255.255.252   ip pim sparse-dense-mode  clock rate 56000 end R2 interface FastEthernet0/0  ip address 172.16.1.99 255.255.255.0   ip pim sparse-dense-mode  duplex auto  speed auto end interface Serial0/0  ip address 10.1.1.2 255.255.255.252   ip pim sparse-dense-mode end this is it !! now our multicast traffic should run smoothly on our network. But how to test, there's a few method out there, but let's try this way first. we...
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EtherChannel, Trunking, VTP, VLANs and Access port - GNS3 and VPCs

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we'll start with setup EtherChannel between S1 and S2 use the range for of the interface for easy setup S1(config)#interface rang fa 1/14 - 15 S1(config-if-range)#channel-group 1 mode on Creating a port-channel interface Port-channel1 *Mar  1 00:23:53.623: %EC-5-BUNDLE: Interface Fa1/14 joined port-channel Po1 *Mar  1 00:23:53.683: %EC-5-BUNDLE: Interface Fa1/15 joined port-channel Po1 *Mar  1 00:23:56.579: %LINEPROTO-5-UPDOW we getting this feedback on the screen, indicating that this EtherChannel is up. we have created a virtual interface of EtherChannel called Port-Channel1, or Po1 let's verify this by show etherchannel summary, here you can more detail such as interfaces that intercipated in this group S2#show etherchannel summary Flags:  D - down        P - in port-channel         I - stand-alone s - suspended...
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