How to Check CDP Neighbors on Cisco ASA
Checking CDP neighbors on a Cisco ASA is a two-command job once CDP is enabled. Here is how to turn it on, read show cdp neighbors, and map your topology.
1 min read
Fundamentals
Networking fundamentals and CCNA-level reference content. The TCP/IP and OSI models, ethernet basics, encapsulation, IPv4 addressing, layer 2 fundamentals, and the Cisco IOS commands every network engineer reaches for. The foundations beneath the pillar guides.
39 posts
How to Set IP Address on Cisco Switches
A Cisco switch gets its management IP on an SVI (usually VLAN 1 or a dedicated mgmt VLAN). Here is the config, the default gateway step, and SSH-readiness.
2 min read
How to Import Files to Cisco Router
Get files onto a Cisco router with TFTP, SCP, or USB. Here is how to set up a TFTP server, use copy tftp: flash:, and avoid the common transfer gotchas.
4 min read
Resetting Counters on Cisco Switches
Clear interface counters on a Cisco switch with clear counters to reset a baseline before troubleshooting. Here is how to use it safely and verify errors.
2 min read
10 Cisco Port Audit Steps for Amazing Network Security
A thorough Cisco port audit hits port status, VLANs, port security, 802.1X, CDP/LLDP, STP role, errors, and unused-port shutdowns. Here are ten repeatable steps.
4 min read
How to Configure HTTP Method on a Cisco Switch
Enabling HTTP or HTTPS on a Cisco switch takes ip http server, secure-server, AAA, and a trustpoint. Here is the config, the security hardening, and the gotchas.
3 min read