Basic Information Commands
1. Show System Information
Displays basic system information including model, serial number, and uptime.
show system
System: Dell Networking N3048-ON
System MAC Address: 00:01:e8:07:25:80
Serial Number: ABC12345678
Up Time: 15 days, 12:35:22
OS Version: 10.5.0.5
2. Show Version
Displays detailed version information for the switch software.
show version
Dell Real Time Operating System Software
Dell Operating System Version: 2.0
Dell Application Software Version: 10.5.0.5
Copyright (c) 1999-2022 by Dell Inc. All Rights Reserved.
Build Time: Wed Mar 15 14:22:05 2022
3. Show Running Configuration
Displays the current active configuration.
show running-config
!
! System: Dell Networking N3048-ON
!
hostname CoreSwitch01
!
interface ethernet 1/1/1
no shutdown
!
interface ethernet 1/1/2
no shutdown
!
vlan 10
name Servers
!
vlan 20
name Users
!
end
4. Show System Resources
Displays CPU and memory utilization statistics.
show system resources
CPU utilization:
5 sec: 12%
1 min: 10%
5 min: 8%
Memory utilization:
Total: 2048000 kB
Used: 512000 kB (25%)
Free: 1536000 kB (75%)
Interface Management Commands
5. Show Interface Status
Displays status and basic information for all interfaces.
show interface status
Port Description Status Vlan Duplex Speed Type
ethernet1/1/1 Server01 Connected 10 Full 10G 10GBase-CX4
ethernet1/1/2 Uplink-to-Core Connected trunk Full 10G 10GBase-CX4
ethernet1/1/3 User-PC Connected 20 Full 1G 1000Base-T
ethernet1/1/4 Not Connected Down 1 Auto Auto 1000Base-T
6. Show Interface Counters
Displays traffic statistics for a specific interface.
show interface ethernet 1/1/1 counters
Port: ethernet1/1/1
Received:
Octets: 15489234567
Unicast: 23456789
Multicast: 1234567
Broadcast: 23456
Errors: 0
Transmitted:
Octets: 19876543210
Unicast: 34567890
Multicast: 234567
Broadcast: 34567
Errors: 0
7. Configure Interface Description
Adds a description to an interface for documentation.
interface ethernet 1/1/5
description "Connection to Web Server"
(No output on successful configuration)
8. Shutdown/No Shutdown Interface
Administratively enables or disables an interface.
interface ethernet 1/1/10
shutdown
(No output on successful configuration)
VLAN Configuration Commands
9. Show VLAN Information
Displays all configured VLANs and their member ports.
show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active eth1/1/23, eth1/1/24, Po1-Po48
10 Servers active eth1/1/1, eth1/1/2, eth1/1/3
20 Users active eth1/1/4-eth1/1/22
30 Management active eth1/1/48
10. Create a New VLAN
Creates a new VLAN with a specified ID and name.
vlan 40
name "Wireless-Users"
(No output on successful configuration)
11. Assign Interface to VLAN
Configures an interface as an access port in a specific VLAN.
interface ethernet 1/1/15
switchport access vlan 40
(No output on successful configuration)
12. Configure Trunk Port
Configures an interface as a trunk port carrying multiple VLANs.
interface ethernet 1/1/48
switchport mode trunk
switchport trunk allowed vlan 10,20,30
(No output on successful configuration)
Routing Commands
13. Show IP Route
Displays the IP routing table.
show ip route
Codes: C - connected, S - static, R - RIP, O - OSPF, B - BGP
* - candidate default
C 10.10.10.0/24 is directly connected, Vlan10
C 10.10.20.0/24 is directly connected, Vlan20
S 0.0.0.0/0 [1/0] via 10.10.10.1, Vlan10
O 192.168.1.0/24 [110/20] via 10.10.10.2, Vlan10
14. Configure Static Route
Adds a static route to the routing table.
ip route 192.168.100.0/24 10.10.10.5
(No output on successful configuration)
15. Show IP Interface
Displays IP configuration for layer 3 interfaces.
show ip interface
Interface IP Address Status Protocol
Vlan10 10.10.10.1/24 Up Up
Vlan20 10.10.20.1/24 Up Up
Monitoring & Troubleshooting Commands
16. Show MAC Address Table
Displays the MAC address table showing learned addresses.
show mac address-table
Vlan Mac Address Type Ports
---- ----------- ---- -----
10 00:1a:2b:3c:4d:5e Dynamic eth1/1/1
10 00:1b:2c:3d:4e:5f Dynamic eth1/1/2
20 00:1c:2d:3e:4f:5a Dynamic eth1/1/15
20 00:1d:2e:3f:4a:5b Dynamic eth1/1/16
17. Ping Test
Tests connectivity to a remote IP address.
ping 10.10.10.100
PING 10.10.10.100 (10.10.10.100): 56 data bytes
64 bytes from 10.10.10.100: icmp_seq=0 ttl=64 time=1.234 ms
64 bytes from 10.10.10.100: icmp_seq=1 ttl=64 time=1.123 ms
64 bytes from 10.10.10.100: icmp_seq=2 ttl=64 time=1.345 ms
--- 10.10.10.100 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 1.123/1.234/1.345 ms
18. Traceroute
Traces the path packets take to a destination.
traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 40 byte packets
1 10.10.10.1 (10.10.10.1) 1.234 ms 1.123 ms 1.345 ms
2 192.168.1.1 (192.168.1.1) 5.678 ms 5.432 ms 5.987 ms
3 203.0.113.1 (203.0.113.1) 15.432 ms 15.123 ms 15.678 ms
19. Show Logging
Displays system log messages.
show logging
2023-05-15 08:23:45: %STP-W-PORTSTATUS: ethernet1/1/5: STP status blocking
2023-05-15 08:24:10: %LINK-I-Up: ethernet1/1/5 is up
2023-05-15 09:15:22: %SYS-5-CONFIG_I: Configured from console by admin
20. Show CPU History
Displays historical CPU utilization data.
show cpu history
CPU utilization history:
Last 10 seconds: 15%
Last 1 minute: 12%
Last 5 minutes: 10%
Last 1 hour: 8%
Last 24 hours: 6%
Security & Management Commands
21. Show Users
Displays currently logged-in users.
show users
Line User Host(s) Idle Location
*0 con 0 admin idle 00:05:20
1 vty 0 jsmith 192.168.1.100 00:02:15
22. Configure SSH
Enables SSH for secure remote management.
crypto key generate rsa modulus 2048
ip ssh server
Generating RSA keys... Done.
SSH server enabled.
23. Show Access Lists
Displays configured access control lists.
show access-lists
IP Access List management
permit tcp 10.10.10.0/24 any eq 22
permit tcp 10.10.20.0/24 any eq 80
deny ip any any
24. Save Configuration
Saves the current configuration to non-volatile memory.
copy running-config startup-config
Copy completed successfully.
Configuration saved to startup-config.
25. Show Configuration Differences
Compares running configuration with startup configuration.
show configuration diff
--- startup-config
+++ running-config
@@ -15,3 +15,6 @@
interface ethernet 1/1/15
+ switchport access vlan 40
+!
+vlan 40
+ name Wireless-Users