Other Network Architecture Subjects

Cisco N9K ARP issue / Proxmox Issue

Hello, I write you because i'have a problem with a customer. Here my configuration : interface Vlan50 no shutdown ip access-group customers in ip access-group 50-anti-ddos-in out no ip redirects ip address 193.38.250.1/24 ip address 45.15...

VPN Tunnel ipsec - static IP to Dynamic

Hello.VPN tunnel,I am trying to create an ipsec-vpn between 2 cisco routers. One router has a wan static IP - provider routerThe other is configured with static IP as well, but I am interested in making a VPN useing DHCP mode. So I do not think that ...

Resolved! How does the Internet Backbone Network Topology and Internet Service Provider Network Topology looks like?

Hi all networking pros, As you can see in the title, I was actually researching on the network topology of the internet backbone and also the internet service providers, but unfortunately I really couldn't find more information despite whole day of g...

3560 tftp errors - what does O mean?

Some colleagues are trying to upgrade a 3560 switch and are having problems. Instead of the nice !s to say all is going well, or the normal .s when there is a problem they are saying they are getting Os - anyone know what that means?Ta.

Smart Licensing Offline Activation

Hi All, I have private network in banking environment. I have C9200 and C9300 would need to activate the licenses. The site strictly with no internet access. I have seen there is offline option( copy paste) method to activate the device licenses, but...

Visio stencils

It's difficult to express in words how much I hate Visio, its appalling usability seems only rivalled by its ubiquity. The job demands that I use it. I have a very basic need of a stencil for a generic Switch and a Router. Cisco seemed to have made t...

Cisco MDS 9148S 12-port On-Demand Activation license

Hi All, I'm trying to add Cisco MDS 9148S 12-port On-Demand Activation license with 12 x 16G SW SFP+ (M9148S-DPL12PSG) in Cisco Commerce Estimates. But it does showing no matching items. Can't we do with only license files? Please advice.

I can't Ping other subnets but pinging within subnet is successful

Hi, I'm new with cisco packet tracer. But I have a problem with my project file, I filled in all the IPs but i cant ping them from other subnets. I tried following the tutorials on Youtube but still no success. Please anyone could try to point out wh...

Password required, none set

Hi,My company just purchased 4 2960-s 48-port switches, and I am trying to get them configured. When I attempt to log into one of the switch through Putty, I get "Password required, but none set". What do I need to wipe this switch and reconfigure?...

Designing a Network with Hierarchical and Modular Design

Hello all pros, I am currently practicing designing a network for an enterprise based on the requirements of hierarchical design and modular design that has been specified in Requirements.jpg. The original network is as stated in Practice.pdf. Now, I...

Duplicate IP - block by hw mac

How to avoid a human mistake, where the IP address of the key service was raised and then appeared a duplicate IP.Is there some mechanism that keeps all MAC + IPs in the database. And if a duplicate ip appears will block it by mac address newly notif...

Cisco 9300 lost POE on all ports

Hione of my 9300 with IOS Version 16.6.5 (CAT9K_IOSXE) just lost PoE on all 48 ports. is that an IOS Bug?Do i have to upgrade the IOS to gold version or just reboot will do??

DHCP Pool

DHCP Pool range ip dhcp pool datanetwork 10.60.86.0 255.255.255.128default-router 10.60.86.2 Now if you run steag#Sh IP DHCP pool Data Pool Data :Utilization mark (high/low) : 100 / 0Subnet size (first/next) : 0 / 0Total addresses : 126Leased address...

Can not telnet on IOS but only debug mode

Hi guys. I am trying to configure telnet on a ASR router 1001. I already run all the commands as per article but everytime that i try to telnet is stuck on the message : --Waiting for IOS Process--. I know that to telnet we need to enable login loc...

Meraki or Catalyst switches

Hello!We need to refresh all our access switches for 120 remote sites. They currently have a mix of SG200 and SG300. We also have 5 bigger sites that have C2960X stacked. We talk about 10-100 users for small sites and 200-250 for the 5 bigger sites.W...

Other Network Architecture Subjects

Forum Posts

Cisco N9K ARP issue / Proxmox Issue

VPN Tunnel ipsec - static IP to Dynamic

Resolved! How does the Internet Backbone Network Topology and Internet Service Provider Network Topology looks like?

3560 tftp errors - what does O mean?

Smart Licensing Offline Activation

Visio stencils

Cisco MDS 9148S 12-port On-Demand Activation license

I can't Ping other subnets but pinging within subnet is successful

Password required, none set

Designing a Network with Hierarchical and Modular Design

Duplicate IP - block by hw mac

Cisco 9300 lost POE on all ports

DHCP Pool

Can not telnet on IOS but only debug mode

Meraki or Catalyst switches

Get ready! Great things are coming to Cisco Community

Have your wish for humanity broadcast into space by George Takei!

New stancils for SD-style drawing

ISR 4331 - Netflow filter with ACL?

Java and Packet Tracer

Ping in CPT between different VLAN failed

I studied sso and nsf, but I'm not sure if I understood it correctly.

Real world network implementations

rated power consumption for cisco equipment

Implementing Mesh Wireless Network with Catalyst 9105 APs

wan connection

how to do Telnet to a router Cisco for UDP to port 500