%SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling
We had opened the CISCO TAC case to understand more about this error, But based on search we found that this Error was most Probable cause for MAC address Loops as result of STP Topology failure . This is based upon the following Cisco BUG related to erro…
Slow Performance on Specific AP
This Blog explains troubleshooting steps to find out cause of slow performance on specific access point. 1. From User’s location information, it is easier to find out WLC details either from Visio or WCS. 2. In WCS, Click Monitor>Controller to get the c…
How pxe works in datacenter
PXE works with Network Interface Card (NIC) of the system by making it function like a boot device. The PXE-enabled NIC of the client sends out a broadcast request to DHCP server, which returns with the IP address of the client along with the address of t…
understanding tacacs-server directed-request command
I find people getting confused on understanding command “tacacs-server directed-request” on Cisco IOS routers. Lets have a look how does it behaves. Suppose we have two tacacs servers configured on a router. tacacs-server host 10.0.0.1 tacacs-…
bootflash and sup-bootflash in Cisco 6509 switch
In my production environment I went through a case where I noticed a behavior of Cisco 6509 switch in which there were bootflash and sup-bootflash where IOS images can be stored and then set the boot variable on either of these. In this switch there was a…
Internet routers hitting 512K limit, some become unreliable
Internet routers hitting 512K limit, some become unreliable At the heart of the issue, the growth of routable networks on the Internet overwhelmed the amount of memory set aside in infrastructure hardware, typically routers and switches, that determines t…
ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on gig0/2
Error : ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on gig0/2 Error code CSCea46385 Symptom: An interface on a Catalyst switch is errordisabled after detecting a loopback. Mar 7 03:20:40: %ETHCNTR-3-LOOP_BACK_DETECTED: Loop-back detected on GigabitEt…
STEPS FOR THE IMPLEMENTATION OF HP-RGS BLADE ENCLOSURES
STEPS FOR THE IMPLEMENTATION OF HP-RGS BLADE ENCLOSURES Task 1 :- Create RIB/ILO net (use existing if available) à If New Subnet is needed , Create the SVI on Core switch , Use DHCP and DNS for that location. Make it routable if not . Task 2 :- Assign IP…
eigrp was continuously flapping between 300 MB ckt
Issue :Eigrp was continuously flapping between 300 MB ckt Jan 31 07:38:06.191 UTC: %DUAL-5-NBRCHANGE: EIGRP-IPv4 224: Neighbor 143.98.217.2 (GigabitEthernet0/0/2) is up: new adjacency Jan 31 07:38:53.433 UTC: %DUAL-5-NBRCHANGE: EIGRP-IPv4 224: Neighbor 14…
Switch Memory issue due to Netflow
Netflow is the mechanism through which we can capture the real time data of the network to analyse the traffic pattern , Bandwidth usage and to troubleshoot the utilization of the network . Some time Netflow cause the Memory utilization causing switch to …