10-16-2014 01:31 PM - edited 03-07-2019 09:09 PM
While trying to debug why logs from my 6509-E are not going to the Linux server syslog directly connected to the switch. I tried to ping the server in EXEC mode on the switch but it failed??? I tried the same thing on my 2 3750's in a stackwise configuration and they worked. Any idea why I can't ping on the 6509-E? All ports are on the same vlan.
Thanks
Dave Flatley
10-16-2014 01:39 PM
Did you ping the address sourced from the vlan interface?
10-16-2014 02:44 PM
Dave
We need additional information to be able to give you answers to this issue. Do I understand correctly that the server is connected to a port on this 6509? If so please post the configuration of that port and of the vlan. Also please post the output of show mac-address-table (preferably output specific to that port). And the output of show arp (and if the arp table is large then restrict the arp output to that vlan or that particular IP address).
Is this 6509 a stand alone switch or is there another switch connected to the vlans providing redundancy in the network?
HTH
Rick
10-17-2014 09:13 AM
Rick: Yes the Linux server I want to send Cisco logs to is connected to the switch. It is a stand alone switch.
Interface GigabitEthernet9/4
switchport
Show Arp
Protocol Address Age (min) Hardware address type Interface
Internet 172.30.0.1 0 e41f.13b3.5970 arpa Vlan1
Internet 172.30.80.1 0025.b446.4800 arpa Vlan1
Show mac-address-table
* 1 0014.5ef4.9180 dynamic yes 0 Gi9/4
Thanks.
10-17-2014 07:01 PM
Dave
Thanks for the additional information. It gives us some clues about the problem. The mac address of the device connected to the port is 0014.5ef4.9180. But that address does not match either of the entries in the arp table. When the switch tries to ping the server it uses the mac from the arp table as the destination mac. If that is not the mac on the interface then the ping fails.
There are a couple of things that you might do and post for us.
- is there an entry in the arp table for 0014.5ef4.9180 and if so what IP address is it?
- is there an entry in the mac address table for 0025.b446.4800 or for e41f.13b3.5970 (whichever is supposed to be the server).
- it might also be helpful if you would post the config of interface vlan 1 on the switch.
HTH
Rick
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