A misconfiguration or a physical layer issue may cause the alignment error counter to increment.
Alignment errors are the count of the number of frames received that do not end with an even number of octets and have a bad Cyclic Redundancy Check (CRC). This could indicate a cable problem or a faulty transmitter on the network equipment connected at the other end. This count should be zero or very low. When the cable is first connected, some alignment errors may occur. Issue the show port command to check for alignment errors on a Catalyst OS (CatOS)-based switch. On a Cisco IOS -based switch, issue the show interface command to check for CRC errors.
To resolve alignment errors, perform these tasks:
Test the existing cable with a cable tester or replace it with a known good cable.
Hard set the speed and duplex settings if both sides of the link can be hard set.
As the title says, I have a 2921 with one EHWIC-D8ESG and one EHWIC-4ESG (plus an EHWIC-1GE-SPF-CU, which likely does not affect the problem). Both Gigabit multi-port EHWICs are connected to VLAN 10, configured as NAT inside. G0/1, G0/2 and G/0/0/0 are al...
Hi,recently i saw this MSG. on the log file but i cant understand what is the cause route of it LC/0/0/CPU0:Feb 26 21:46:30.694 UTC: fib_mgr: %ROUTING-FIB-4-RETRYDB_NONEMPTY : One or more FIB object(s) have been in IPv4 retry queue for at ...
Hello guys,I want to ask you for help and advice regarding the QoS on private network (intranet). I have a modem form ISP connected ti my cisco router 2611xm that is connected to my switch 2950T and from there from port1(lan1 100mb/s)is connected a a...