I have Ayaya phones connected to 4507R Version 12.2(20)EW1 and on the Fe interfaces,im receiving too many Runts and Input & CRC errors.I really not sure why Runts are being generated.Im pasting the config.would appreciate any help in this regard..
Even i felt that the possible cause cud be a mismatch with the speed and duplex settings.But when i change it to auto the switchport goes to 10/half which is what i dont like and you will also agree.Im not sure if Avaya phones can be manually set to speed/duplex settings like Cisco IP.
That makes us clear with the reason for runts and crc and input errors. You Avaya phones are working on 10 half and switch is running on 100 full which is a mismatch and runts and crc are incrementing.
Can you please post the model number of your Avaya ip phone.
If your running 4602/4610/20/21/25 first ensure you are running latest avaya firmware. 2.2.3 I think is latest. Second avaya ip phones work very well set to auto, but can be physically hardest via options button on phone or adding PHY1STAT 5 command to tftp script file.
Secondly, if you have 4606/12/24 avaya ip phones..get the above models.
Thirdly, rule out the 4700 blade, get another switch to see if the phones have the same issue.
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