Access layer not drawing ips or communicating with core

T_tow · ‎03-07-2018

Hello,

I have a branch site set up with 3 2960x stacked and a 4451 router. My default gateway for voice and data is on the router with a dhcp pool set up for voice and a ip helper address for data. When I plug a laptop in I get this at first:

ENA_CORE_SW01#
Mar 7 21:45:26.214: %SYS-5-CONFIG_I: Configured from console by console
LENA_CORE_SW01#
Mar 7 21:46:27.986: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/47, changed state to up
Mar 7 21:46:28.989: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/47, changed state to up
LENA_CORE_SW01#
Mar 7 21:46:34.868: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/47, changed state to down
LENA_CORE_SW01#
Mar 7 21:46:35.892: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/47, changed state to down
LENA_CORE_SW01#
Mar 7 21:46:38.870: %LINK-3-UPDOWN: Interface GigabitEthernet2/0/47, changed state to up
Mar 7 21:46:39.870: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/47, changed to state up

My lap also is not drawing an ip address and when I ping all I get is:

PING: Transmit failed. General failure

All my interfaces are pretty much set up as so:

interface GigabitEthernet2/0/47
description END USER
switchport access vlan 10
switchport mode access
switchport voice vlan 20
mls qos trust device cisco-phone
spanning-tree portfast
spanning-tree bpduguard enable
spanning-tree guard root
end

Could it be an STP problem?

Thanks

Reza Sharifi · ‎03-07-2018

Hi,

Can you try the same port or a different port with a very basic config and test again?

interface GigabitEthernet2/0/47
description END USER
switchport access vlan 10
switchport mode access

HTH

T_tow · ‎03-07-2018

Yes so I just noticed my switch and router aren't pinging the address where the server should be. My router was pinging it a second ago but now it's not.