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
I am encountering the following problem on our Cisco C9300X-48HX switches - We have 2 tenGigabyteEthernet interfaces configured: 1/0/13 and 1/0/14. They share a vlan. They are configured as such: interface TenGigabitEthernet1/0/13 switchport access ...
Dear all,In our lab we have some EOL Products (some of the are realy old). I would like to check the latest -interim software für these devices.Catalyst 2970G-24TS (we have: c2970-lanbase-tar.122-44.SE6)Catalyst 2960G-24TC-L (we have: c2960-lanbasek...
Root bridge is IOU1i executed this script on the kali machine. after it the egress port to the root transitioned to the alternative state, despite the lower mac address of the Root-bridge. CHAT said its becuase of a lower port priority, but from what...
Resolved! Types of STP protocol
i just encounter to the type of STP which is really new for me is this right that we have six type of STP : Summary of STP Types STP: Standard, slower convergence. RSTP: Standard, faster convergence. PVST: Proprietary, one instance per VLAN. Rapid P...
Resolved! C9200L stack compatibility
I have two C9200L-24P-4G switches in a stack configuration. I'd like to add one C9200L-24P-4X to the stack. Is it allowed?
I have experienced multiple times whenever switch got faulty and replaced, multiple cisco WiFi devices didnt come up, as switch ports didn't up, after replacing the connectors from either switch end or device end, ports come up, so my question is hav...
Resolved! PacketTracer Lab Help
Hey,I am currently working on a ccna prep lab which is supposed to be on ACLs.But I am having errors setting up the basic topology.I have redone the lab from scratch several times now, and I cannot determine the main issue; which is PC-B cannot conne...
Resolved! IP Phone on a router and dhcp on L3
Hi there I am trying to achive a setup where we can use ip phones. I have 4500 core switch and dhcp in it.I set up the voice vlan and option 150 The core does not have telephony-service. however, i have 2811 router not being used. Is it possible to u...
hello to everyone hope u all fine and wil:I have trouble with configuration of private vlan and FHRP ( VRRP ) with multiple vlans.if i create private-vlans in access-layer and add member as shown so then i trunk the Access-layer Switches toward DLS ...
Question for the Cisco Community hive mind: Can the Management interface on the Catalyst 9K carry VTP?For bonus: Can it carry PTP/IEEE1588?I'm down the rabbit hole on a topology re-design (where a 3rd party firewall will separate groups switches), an...
Resolved! Mac flap
If 2 MAC learners are running on a single port then the issue of flapping arises.
We are seeing switch logs as same mac xxxx:0111 is being learned on two access interfaces on the same switch.now after investigation we found the red team was performing spoofing of mac address and their device they applied the mac address of one our...
For the first time I have been trying remote span by the manual, but cannot use it.As soon I enter °monitor session 1 destination remote vlan XX", connectivity for the monitored vlan ceases.When I negate the command, connecitivity resumes immediately...
Hello CISCO Team,as a mechanical engineering company, we need 3D data for our systems.For a digital twin and therefore also for the installed CISCO products.Unfortunately, these cannot be downloaded directly from the product page.However, we urgently...
Resolved! vPC peer-link between 5000 & 7000
Hi,i'm tring to create a vPC peer-link between my 7000 & 5000.The 10G trunk is up between the Two but i cannot manage to mount the vPC peer-link.I'm wondering if this link is even possible, Cisco doesn't talk about a connection like that.Here is some...
