I set up a Ethernet channel between 3750 switch stack and another stand alone 3750 switch. Today user complained network very slow. I found lots of Drops in Input queue and the port-channel interface on stack members are DOWN. Master switch CPU us 80%. It seems to be port channel is not running on two stack members. Question is what status of port-channel interface on stack memeber should be. Down or Up.
STECH_3750-3#sh interface port-channel 1
Port-channel1 is down, line protocol is down (notconnect)
Hardware is EtherChannel, address is 0013.8028.1941 (bia 0013.8028.1941)
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
reliability 255/255, txload 10/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s, link type is auto, media type is unknown
Media-type configured as connector
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi1/0/51 Gi2/0/51
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
You can successfully troubleshoot input queue drops while packets constantly arrive in the input queue. You cannot troubleshoot a congestion that occurred in the past. If more than one routed protocol is configured on the interface, first determine the protocol that congests the input queue. Here is the fastest way to do this is:
Determine the suspect protocol. Check the CPU utilization in Input processes. To do so, run the show processes cpu exec command. If Cisco IOS Software version 12.1 or higher currently runs on the router, you can shorten the output of the show processes CPU command through the output modifiers
Find out whether packets that congest the input queue are destined for the router, or are forwarded through the router. Run the show interfaces [type number] switching command from exec mode.
Try to get more information about the packets that congest the input queue. For this, you must debug the received packets. The previous steps indicate the debug commands that you need to enable.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.