Hello Dear Community, i have crated a small test topology where i have a main DHCP Server connected to a Switch(WS-C2960-24TT), on the same Switch there are 4 devices connected and are set to ask DHCP for IP address.what i am trying to reach:1- i wou...
Forum Posts
Hi all,I have a 3850 L3 switch configured to send netflow to QRadar. Everything is working fine but recently I have seen some strange events popping up in netflow coming from this switch.Recently we have tightened security with an ACL on a VLAN inter...
Hello, I'm having an issue with running HSRP on Cisco Nexus 9K in vPC. I've done the configs but when Initiate the "show hsrp" command on the Nexus 9Ks. its saying "Standby router is unknown" on primary switch and "Active router is unknown" on standb...
Hi guys,Ok , I am studying little bit of switching technology for my day to day job requirement. May be following are very basic questions for you guys but really difficult to understand for me.How one can fine the MAC address of a cisco switch. For ...
Normally I would give the a device that always needs to be on a static IP address through its web interface or command line. However I ran into a different device. Its a security panel that's always on and there is no way to log into it, no web inter...
Having some issues with a brand new Catalyst switch. I tried migrating the config file from my old switch to the Catalyst 9200L; it looked like it worked, until I reloaded the switch. Now, the switch will go through the boot sequence, and then displa...
Resolved! Procurve untagged/tagged on Cisco side
Hello,I have a problem with in future mixed environment with Procurve and Cisco devices. Environment looks like: Router <-> SW1 (192.168.100.1) <-> SW2 (192.168.100.2)<-> Server20 (end device with networkcard and several VLANs)I will explain the curr...
can anyone explain the naming convention ws-x6148a please?
Hi, I am getting many transmit discards on 6509 interfaces on a specific vlan every 15 minutes, generally within a minute of 3:00, 3:15, 3:30 ect... I have confirmed these discards are impacting video traffic on that vlan. We get a burst of CC erro...
Hello,I applied the monitor capture as listed below - c4500. However, I am only able to see one-way communication, meaning only traffic leaving the source IP defined in ACL, but no incoming traffic is seen on the capture. ip access-list extended MonC...
I have some weird behavior. My Cisco Catalyst 9200 switch reacts slowly on whichever command i type in configuration mode, while in exec and enabled mode it reacts at normal speed.It is the same behavior in on SSH as on Serial. 2 days ago I did confi...
Hello Everyone, I am currently encountering an issue after upgrading 2 4500X in VSS. One of the switches has boot in Rommon. After a lot of reloading, booting in Rommon, and unable to establish VSS again, I've decided to convert them back to standalo...
Hi, Guys, I am far away from such configuration.Any document or article about the these configuration in Cat3850 and Cat9300 ? I would like to enable the netflow in the latest switches, in order to check/inspect network traffic within the devices in ...
Hi everyone, I always appreciate for technical support. In order to transmit syslog and Windows event log to the cyber security operation center, I have plan to connect 20 independent systems with Catalyst 9300. Since the IP address of each independe...
Randomly VLAN 20 on one of my routers is in a down/down state. Nothing new has happened configuration wise on the router, or any other device on the network. I've tried deleting the VLAN, and recreating it but it went down/down immediately after. I c...
