Cisco TAC has put together a list of router issues that are commonly perceived to be due to a hardware failure, but can normally be fixed more quickly without replacing anything. While some of these may in fact be due to hardware failures, it doesn't usually make sense to start with that assumption. Save yourself some time by checking more common causes first.
#4 A module or interface card is unrecognized. If the IOS version is too new, or the hardware is otherwise unsupported by the software, modules may not be seen. This is almost always a mismatch between the software required and the hardware installed.
In additional, failure to save the configuration after a change is also fairly common.
#6 Errors reported in show interface output. Most errors are either normal, but unusual conditions (drops, e.g.) or due to an external cause like incorrect clocking, noise, or even a marginal cable. Rule those out first.
#7 Wrong version loaded, or failure to completely boot. Again, the config-register can easily cause unexpected behavior. Check the config-register and boot system commands, and beware of relying on the system to boot the first image in flash.
Hi all, i am hoping to get your assistance ...we have a flat network where EVERYTHING runs on VLAN1, even to CE interface - oh boy!please forgive me in advance as i am not very familiar with routing... presently, i have a c9200 switch, our CE connect...
Dears,is there any method to know if the console cable is connect to device or not ?we have switches in different location, some of them is connected with console cable, i am looking if there is any method to know if the device is connect with console cab...
there are 4 nexus switches 5596, and problem is only on Switch00-01.
a port 2/8 towards firewall is flapping every few hours, causing disconnects.
This is a sync failure state port which forces the firewalls to do a failover,
when it fails and cause i...
C9200-24P spamming to log:%IOSXE-3-PLATFORM: Switch 1 R0/0: kernel: i2c i2c-5: SCL is stuck low, exit recovery Same issue in 17.3.4b, 17.3.5, 17.6.3, 17.7.1 Power Supply A not showing in “sh inventory” but showing in “sh inventory fru”Power Supp...