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
Resolved! IP Source Guard
So, I am having some issue with configuring ip source guard. Here is the configuration results on SW:Switch(config-if)#do sh ip ver soInterface Filter-type Filter-mode IP-address Mac-address Vlan--------- ----------- ----------- --------------- -----...
Can someone help me figure this out? Unable to ssh from C9300 to a C1000 and it complains about hmac, kex and pretty much everything else. I am not clear on what I need to change, server/client on either to allow this to work? %SSH-3-NO_MATCH: No m...
Resolved! C9200L-48P-4x DATA stack an not power
Hello,Could you please confirm the C9200L-48P-4, like other C9200 or C9200L can do only DATA stack (StackWise) with C9200L-STACK-KIT, and this not possible to have power stack ?Do you have any Cisco document that specifically mentions that ? I cannot...
does 8300 edge router supports 8 level Priority Class Based Queuing Per IP address/subnets, ports, DSCP and ToS bits
I have read at least 6 links on Cisco Systems to try and really understand the difference between UDLD Enable and UDLD Aggressive. The more I read the more I am confused. My final understanding is as follows and I wish someone to correct me if my und...
We have a stack of 3 IE 9320 switches connected. We tested by powering off each switch and how the end device behaves. While powering off, we see one ping drop and while switch is powered back and then when it gets added to the stack we see intermitt...
Hi,I'm using an old Cisco 3750x as an aggregator switch for a number of other switches which are configured with an RSPAN vlan. The Cisco 3750x then has the uplink port connected to a passive network monitoring sensor which ingests all the SPAN traf...
Hi all!Scenario: A LAN with three devices(A,B,C). Device A sends an ARP broadcast and device B receives it, but B is not the traget IP, and B currently has no ARP cache entry for A.My question is: will device B ignore this ARP, or will it create a ne...
GreetingsI have a Cisco 9300X running IOS 17.09 and I have a case where I would like to capture RSPAN traffic from another switch but also capture traffic from the local switch. The capturing device only has one monitoring interface, otherwise this w...
Resolved! 9200 Stack of 2 Switch IOS upgrade.
Very good day pros.I have STIGs compliance to upgrade 9200 (Stack2 switches) from current IOS (cat9k_lite_iosxe.17.12.05.SPA.conf) to (17.12.06). I have have uploaded (cat9k_lite_iosxe.17.12.06.SPA.bin) and waiting for for the scheduled down time.My ...
Hi,I have been struggling all day in an attempt to get mlabbe/iperf3 installed on a 9300 running 17.3.5 using advantage.So far, I have tried saving the image using docker save which defaults to the "oci-archive" format (uses blobs) as well as using p...
Hello, I would like to ask for a guide for upgrading the C6807 version.Currently, Supervisor is using SUP-6T, IOS 15.3(1)SY, and ROMMON is using 15.3(04r)SYS.I want to upgrade this equipment to the latest stable version of IOS 15.5.1-SY16.I need a gu...
I have a Cisco SMB500 52-port switch that has never been used. These switches are no longer supported, but I need the IOS to upgrade it to the version before it was discontinued. Can anyone help me with this issue? Cisco Support asked me to contact t...
Hi guys, I need a help with issue. Our customer is having 9200L as edge switches (varied models due to PoE demands), some stacked, mostly not. We are running Ansible automation and push commands every night around midnight. And there is one stack whi...
Resolved! no ip dhcp conflict logging
hi all,i have a little confuse about the command " no ip dhcp conflict logging ".i know this command is to disable logging the ip conflict. but as i know, DHCP will ping the IP which will assign to make sure the IP not be used.if the IP be used, will...
