This page by David Papkin shows useful network links
Enroll in Cisco Networking Academy
Shows config and lists different syslog levels
Configuring System Message Logging (Cisco)
Configuring Cisco IOS to automatically save the running configuration to a tftp server on save
Booting Cisco Router from a TFTP server
Use of the Configuration Register on All Cisco Routers
Understanding Cisco Auto Archive Feature to Backup Configuration File
Adjust Administrative Distance for Route Selection in Cisco IOS Routers
Interface and Line Numbers in Cisco Routers
Configuring Link aggregation with Etherchannel
Errdisable Port State Recovery on the Cisco IOS Platforms
Maximum Number of Interfaces and Subinterfaces for Cisco IOS Routers: IDB Limits
DHCP
Cisco IP Addressing: DHCP Configuration Guide
DHCP Static Binding on Cisco IOS
HSRP,GLBP
Cisco Campus Network for High Availability Design Guide
Cisco What Is Administrative Distance?
Network Management tools
Network Performance Monitor (NPM) Multi-vendor network monitoring that scales and expands with the needs of your network
Paessler Router Traffic Grapher (PRTG) Monitor all the systems, devices, traffic, and applications in your IT infrastructure.
ManageEngine OpManager Monitor routers, switches, firewalls, servers, and VMs for fault and performance
WhatsUp Gold provides complete visibility into the status and performance of applications, network devices and servers in the cloud or on-premises.
Cisco Network Assistant simplifies wired and wireless network management for networks up to 80 devices with its intuitive GUI and a task-based menu
RADIUS vs TACACS+
| RADIUS | TACACS+ | |
| Protocol and Port(s) Used | UDP: 1812 & 1813 -or- UDP: 1645 & 1646 |
TCP: 49 |
| Encryption | Encrypts only the Password Field | Encrypts the entire payload |
TACACS+ and RADIUS Comparison (Cisco)
Routing
Adjust Administrative Distance for Route Selection in Cisco IOS Routers
SNMP
How to Configure SNMP Community Strings
STP
Spanning Tree Protocol Operation
VLAN
Creating Ethernet VLANs on Catalyst Switches
Configure InterVLAN Routing on Layer 3 Switches
Cabling
https://www.cableorganizer.com/cat5e-cables/
Current Standards for CAT Patch Cords
- Cat 1: Wiring used in POTS telephone communications, ISDN and wiring for doorbells. Not recognized by TIA/EIA
- Cat2: Was used on a 4 Mbit/s token ring networks. Not recognized by TIA/EIA
- Cat3: Typically used on 10 Mbit/s Ethernet networks and can be used up to 16 MHz. Currently recognized by TIA/EIA
- Cat4: Typically used on 16 Mbit/s token ring networks and can be used up to 20 MHz. Not recognized by TIA/EIA
- Cat5: Typically used on 100 Mbit/s Ethernet networks and can be used up to 100 MHz; however, Cat5 is not suitable for 1000BASE-T gigabit Ethernet. Not recognized by TIA/EIA
- Cat5e: Typically used on 100 Mbit/s Ethernet networks and gigabit Ethernet networks; can be used up to 100 MHz. Currently recognized by TIA/EIA
- Cat6: Performs at more than double the MHz of Cat5 and Cat5e, going up to 250 MHz. Currently recognized by TIA/EIA
- Cat6a: Standard for future 10 Gbit/s applications.
- Cat7: Standard used to describe ISO/IEC 11801 Class F cabling. Cat7 is a protective shield covering 4 individually shielded pairs (STP) for transmission of frequencies of up to 600 MHz
Differences between T568A and T568B explained
Power over Ethernet (POE) pinout
Switch Virtualization
Cisco StackWise and StackWise Plus Technology
SNMP
How do SNMP, MIBs and OIDs work?
IPv4
Configure IP address on Cisco router
Configure Cisco switch settings
IPv6
End of David Papkin page on Networking links.
David Papkin favorite movies