Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
Forum Posts
Hello. We have a user that has a laptop that can not get network access when used on a particular switch. His laptop gets an authenticated by ISE and gets an IP address but can not access/ping any network hosts. His issue just recently started.All ot...
Hi all dear comunity memebers , I have an issue which couldn't find soluation for . We have an IPTV server & TVs with Cisco 4507R & 2960X switches . The IPTV Vlan is Vlan 3. All configuration we have done seems to be correct and all are on the same V...
Hello Experts, When I tried to check to enable the DOS in switch, cisco document mentioned as below: Step 1. Log in to the web configuration utility and choose Security > Denial of Service Prevention > Security Suite Settings. link: https://www.cisco...
I have up graded all my 2960's to the latest IOS and now I am unable to access the switches in CNA. Does anyone have any IDEA
Resolved! Private VLAN no working!!!!
Hello everyone,Although the configuration of private VLANs is straight forward based on the documentation, but i'm not ablw to make it work using the below configuration on Cisco NX 9000 in GNS3 Lab; configure terminalvlan 2private-vlan primaryexitvl...
ilding a basic OSPF network and I cannot get my PC's to ping each other. Any help on what I may be doing wrong? Here's how I have programmed it and what the network looks like: Switching
Hi again, I thought tie breakers in STP were MAC address and bridge priority but in the following question, the correct answer are A and C. Question: When electing a root port for a nonroot switch, which values are used to break ties if required? A. ...
Hi , We are facing High I/O memory utilization in cisco 2960s switch . we have restarted the device and also clear the counter errors still showing the high I/O memory utilization. what will be the main cause for these error??
Hi, we have two cat 6509 switches and 47 cat 3750 switches as access witches. we are spread over 14 floors. Some of the floors require additional switches due to port saturation . we are planning to add additional switches . Initial plan...
Resolved! Firewall on a stick
i All,I was configuring a set up in packet tracer similar to router on a stick. Only difference is that we got a Cisco ASA firewall in between router and the switch as below: The port from switch to firewall has been made trunk from the switch end. I...
Hi all,We are confused about device-tracking on C9300. A lot of entries are in state STALE although the clients are online and reachable. Furthermore the windows DHCP server is filled up with BAD ADDRESS entries. On C2960x we cannot see such STALE en...
I have using cisco 3560x.Site TA : 3560xSite KA : 3560xI'm using vlan routing for communication between site TA and site KA.and I have 2 provider metro-e, ISP T and ISP B.How to make if ISP T is fail, ISP B is running automatically?now if ISP T fail,...
Resolved! Native VLAN
Hello Experts, What is the use of the Native VLAN? I know that the frames are sent untagged between the trunk ports. Why there require to send the packets in untagged format? Is there any reasons? Regards,Sathishkumar.
Hi, 1)For GLBP , it is active-active R1 and R2 where Traffic will be send to R1 & R2 round-robin via the glbp IP unlike VRRP, right?2)Therefore does traffic only send to higher priority "active GLBP"?3)Wht is the default GLBP priority? Btw wht is th...
We are in the process of implementing DHCP snooping. Clients are unable to obtain ip-address. We have only configured DHCP snooping on the Access-switches. Our configuration is this; #ip dhcp snooping vlan 1-4094 #ip dhcp snooping#ip dhcp snooping in...
