keith li
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New Cisco Catalyst 3850 switch can not be ping on the network
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i,m new in cisco, please correct me if i am wrong, i have ran below command and try to bring the vlan1 up, but the vlan1 interface stats still showing Down, any idea ?
config t
int vlan1
no sh
config t
int vlan1
no sh
make your you enable ip routing.
configure terminal
ip routing
configure terminal
ip routing
Interface VLAN is never usually down.
Use the show vlan internal vlan-info command to check the operating state of the spanning Tree Protocol (STP). Configure STP so that at least one interface goes into the STP forwarding state.
State up down is usually when switch don't see that there is other switch connected from other side (no Layer 2 connection) - VLAN 100
Use the show vlan command to determine if the VLAN exists. Use the vlan command to create the VLAN.
Use the show vlan internal vlan-info command to check the operating state of the spanning Tree Protocol (STP). Configure STP so that at least one interface goes into the STP forwarding state.
State up down is usually when switch don't see that there is other switch connected from other side (no Layer 2 connection) - VLAN 100
Use the show vlan command to determine if the VLAN exists. Use the vlan command to create the VLAN.
The router VLAN interfaces have to fulfill the following general conditions to be up/up:
* VLAN exists and is in active status on the switch VLAN database.
* VLAN interface exists on the router and is not administratively down.
* At least one L2 (access port or trunk) port exists and has a link up on this VLAN. The latest implementation of the autostate feature allows synchronization to Spanning-Tree Protocol (STP) port status.A VLAN interface will be brought up after the L2 port has had time to converge (that is, transition from listening-learning to forwarding). This will prevent routing protocols and other features from using the VLAN interface as if it were fully operational. This also prevents other problems, such as routing black holes, from occurring.
* At least one L2 (access port or trunk) port is in spanning-tree forwarding state on the VLAN.
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#show ip interface brief
#show interface trunk