According to Cisco The Cisco® Catalyst® 9500 (C9500) offer structure has two main components: the hardware switch, which includes the Network Stack perpetual license, and a Cisco Digital Network Architecture (Cisco DNA™) term license.Cisco DNA term l...
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Forum Posts
Resolved! Anything I should be aware of upgrading a WS-C3560x-48P running 12.2(55)SE5 to 15.0(2)SE11?
Anything I should be aware of upgrading a WS-C3560x-48P running 12.2(55)SE5 to 15.0(2)SE11? This will be my first production upgrade, and I would like for it to go as smooth as possible. I already have the new bin file loaded on the switch's flash. T...
Hello,I have a lots of output drops on a WS-C3650-12X48UR-L connecting several firewalls (may not be the best platform for that i agree...). i'm thinking now about reducing those drops by moving cables of the more loaded FW to another ASIC (before ad...
Estimados buenos dias.Podria alguien ayudarme con los comandos de configuracion para poder Bloquear una PC a nivel de MAC en un Swtich de las siguientes caracteristicas: - C2900XL Software (C2900XL-C3H2S-M), Version 12.0(5)WC3b, RELEASE SOFT...
Resolved! I can't connect to server
i can't connect to server from any device other than router3 which is in the same network. What did I do wrong.password to everything is: "cisco"
Resolved! catalyst 3850 stack members lost link
Hi!Today I faced with unexpected stack link lost between members of stack. Now stack in consistent stHow troubleshoot such problem?Also I found strange why switch #1 restarted (as log shows, see futher) while link lost between #2 and #3? c3850 stack...
Hi Alli have a strange behavior, when i try to change the VTP Mode from Client to transparent. I have the following problem. In our network we use many "old" Cisco Catalyst 2950 and 3548XL. After i change my network and break it down in more small br...
Resolved! Difference Between IOS XE 3 & IOS XE 16
For example I have a WS-C3650-48PS switch stack and when I go to cisco.com for updated versions of the IOS XE software I can download either IOS XE 3.6.5E or IOS XE 16.1.3. What is the difference when it comes to a "run of the mill" switch/switch st...
Resolved! Network Unkown Issue
Hi Guys , I have tow Core Cisco 4500x switches and there is a vss between them. also , i have an access switch connect to Core switch via ether channel from both sides. also, i create a MGMT vlan in the both switches to can manage them via telent con...
Resolved! AWS Site to Site VPN
I have an AWS site to site VPN set up but cannot access the instances in AWS. The router used to connect the AWS Site to Site is a Cisco 2951, IOS 15.5. Private subnet on Cisco Router is 10.3.81.0/24Private subnet for AWS is 10.2.10.0/24. From Wind...
So I received my first CAT 93000 in prep for upcoming recap this year. It's a C9300-24T with Network Essentials and DNA Essentials. My issue is that both the Network Essentials and DNA Essentials license is showing to be running in "EVAL" mode. I'm n...
After taking a new job and over the course 10 months I have seen an unusual thing happen. I have had users interconnect two data ports on the same switch 3 times. This occurs at the main campus and brings the entire network to it's knees, which I di...
Resolved! SYN Attack Mitigation
Hi guys, As per my understanding a good way to protect an internal network from a syn attack ( not directed to the switch / router ) to another network client on the same subnet is using tcp intercept. What can I do if on my switches ( 9300 / 2960-XR...
Hello guys, i have difficulties setting up the connectivity between an old HP switch and a new CISCO C9200L-48P-4G-E L3 switch. The cisco switch is supposed to replace another switch in our running company environment. First about my problems: From...
Hi All,I've got a new set of Cisco 350XG's (stacked) and connected via port channel to a 300 POE.On the 350's I've got a physical server running Hyper-V and a VM on that.On the 300 I've plugged in a unify AP and verified it has power. Physical Server...
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