02-25-2008 02:04 PM - edited 03-05-2019 09:22 PM
HI,
I am getting the following log message on my L3 device and the L3 switch hangs. I have restricted telnet session on the L3 device. What is causing this ?
32w1d: %AUTOSTATE-6-SHUT_DOWN: Putting interface Port-channel10.131 into Autostate mode
32w1d: %SYS-5-CONFIG_I: Configured from console by vty0 (127.0.0.2)
32w1d: %AUTOSTATE-6-BRING_UP: Taking interface Port-channel10.131 out of Autostate mode
32w1d: %AUTOSTATE-6-SHUT_DOWN: Putting interface Port-channel10.131 into Autostate mode
32w1d: %AUTOSTATE-6-BRING_UP: Taking interface Port-channel10.131 out of Autostate mode
39w3d: %IP-4-DUPADDR: Duplicate address x.x.85.254 on Port-channel10.101, sourced by 0080.7733.b2f9
48w2d: %STANDBY-3-DUPADDR: Duplicate address x.x.83.251 on Port-channel10.102, sourced by 0000.0c07.ac66
I tried to track these two mac addresses 0080.7733.b2f9 and 0000.0c07.ac66
These mac addresses belong to IP phones which are connected to a L2 device which in turn cascaded to the L3 switch.
Whats the meaning of "Duplicate address x.x.85.254 on Port-channel10.101, sourced by 0080.7733.b2f9 "
x.x.85.254 is the L3 IP(Virtual L3 interface) on the L3 switch.
Is the IP phones MAC address conflicting with the mac address of the L3 switch?
How can I find the L3 switch's system mac addresses.
Appreciate some detailed explanation.
Solved! Go to Solution.
02-26-2008 04:28 AM
Hi,
I'm not are you also looking for a solution for the autostate mode as shown in log.
Please note that the L3 switch L3 vlan will not be in up/up state until on these conditions met.
VLAN should exists and is in active status on the switch VLAN database.
VLAN interface exists on the router/switch and is not administratively down.
At least one L2 (access port or trunk) port exists and has a link up on this VLAN.
At least one L2 (access port or trunk) port is in spanning-tree forwarding state on the VLAN.
To know more about the autostate shutdown please go thru the link...
http://www.cisco.com/warp/public/473/188.html
Regarding the duplicate address, it seems that either the IP phone or the portchannel interface 10.101 might be configured with the the same IP address. Please check...If u r using DHCP check the exclude range..
To know the L3 switch system MAC address you can use the command =show switch or show interfaces.... here you will get the base MAC entry....and it will be incremented by 1 for each interface...ex:
0202.2020.0880 base... first port 0202.2020.0881
Pls. rate if it helps...
BR
*aijaz*
02-26-2008 04:28 AM
Hi,
I'm not are you also looking for a solution for the autostate mode as shown in log.
Please note that the L3 switch L3 vlan will not be in up/up state until on these conditions met.
VLAN should exists and is in active status on the switch VLAN database.
VLAN interface exists on the router/switch and is not administratively down.
At least one L2 (access port or trunk) port exists and has a link up on this VLAN.
At least one L2 (access port or trunk) port is in spanning-tree forwarding state on the VLAN.
To know more about the autostate shutdown please go thru the link...
http://www.cisco.com/warp/public/473/188.html
Regarding the duplicate address, it seems that either the IP phone or the portchannel interface 10.101 might be configured with the the same IP address. Please check...If u r using DHCP check the exclude range..
To know the L3 switch system MAC address you can use the command =show switch or show interfaces.... here you will get the base MAC entry....and it will be incremented by 1 for each interface...ex:
0202.2020.0880 base... first port 0202.2020.0881
Pls. rate if it helps...
BR
*aijaz*
02-26-2008 04:24 PM
This was due to spanning tree loop which was created by accidentally connecting 2 data ports into the same switch.
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