S1#show run
Building configuration...

Current configuration : 2742 bytes
!
! Last configuration change at 11:25:59 UTC Mon Jan 19 2026
!
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname S1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
switch 1 provision c1000-24t-4g-l
system mtu routing 1500
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
!
!
!
interface Port-channel1
 switchport trunk allowed vlan 10,20,30,99
 switchport trunk native vlan 99
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/1
 switchport trunk allowed vlan 10,20,30,99
 switchport trunk native vlan 99
 switchport mode trunk
 switchport nonegotiate
 channel-group 1 mode desirable
!
interface GigabitEthernet1/0/2
 switchport trunk allowed vlan 10,20,30,99
 switchport trunk native vlan 99
 switchport mode trunk
 switchport nonegotiate
 channel-group 1 mode desirable
!
interface GigabitEthernet1/0/3
 shutdown
!
interface GigabitEthernet1/0/4
 shutdown
!
interface GigabitEthernet1/0/5
 shutdown
!
interface GigabitEthernet1/0/6
 switchport access vlan 10
 switchport mode access
 switchport port-security maximum 3
 switchport port-security violation restrict
 switchport port-security mac-address sticky
 switchport port-security mac-address sticky c46e.1f06.1741
 switchport port-security aging time 60
 switchport port-security aging type inactivity
 switchport port-security
!
interface GigabitEthernet1/0/7
 shutdown
!
interface GigabitEthernet1/0/8
 shutdown
!
interface GigabitEthernet1/0/9
 shutdown
!
interface GigabitEthernet1/0/10
 shutdown
!
interface GigabitEthernet1/0/11
 shutdown
!
interface GigabitEthernet1/0/12
 shutdown
!
interface GigabitEthernet1/0/13
 shutdown
!
interface GigabitEthernet1/0/14
 shutdown
!
interface GigabitEthernet1/0/15
 shutdown
!
interface GigabitEthernet1/0/16
 shutdown
!
interface GigabitEthernet1/0/17
 shutdown
!
interface GigabitEthernet1/0/18
 shutdown
!
interface GigabitEthernet1/0/19
 shutdown
!
interface GigabitEthernet1/0/20
 shutdown
!
interface GigabitEthernet1/0/21
 shutdown
!
interface GigabitEthernet1/0/22
 shutdown
!
interface GigabitEthernet1/0/23
 shutdown
!
interface GigabitEthernet1/0/24
 switchport trunk allowed vlan 10,20,30,99
 switchport trunk native vlan 99
 switchport mode trunk
 switchport nonegotiate
!
interface GigabitEthernet1/0/25
 shutdown
!
interface GigabitEthernet1/0/26
 shutdown
!
interface GigabitEthernet1/0/27
 shutdown
!
interface GigabitEthernet1/0/28
 shutdown
!
interface Vlan1
 no ip address
!
interface Vlan99
 ip address 172.16.99.2 255.255.255.0
!
ip http server
ip http secure-server
!
!
!
!
line con 0
line vty 5 15
!
end

S1#show ip int brief
Interface              IP-Address      OK? Method Status                Protocol
Vlan1                  unassigned      YES unset  up                    down
Vlan99                 172.16.99.2     YES manual up                    up
GigabitEthernet1/0/1   unassigned      YES unset  up                    up
GigabitEthernet1/0/2   unassigned      YES unset  up                    up
GigabitEthernet1/0/3   unassigned      YES unset  administratively down down
GigabitEthernet1/0/4   unassigned      YES unset  administratively down down
GigabitEthernet1/0/5   unassigned      YES unset  administratively down down
GigabitEthernet1/0/6   unassigned      YES unset  up                    up
GigabitEthernet1/0/7   unassigned      YES unset  administratively down down
GigabitEthernet1/0/8   unassigned      YES unset  administratively down down
GigabitEthernet1/0/9   unassigned      YES unset  administratively down down
GigabitEthernet1/0/10  unassigned      YES unset  administratively down down
GigabitEthernet1/0/11  unassigned      YES unset  administratively down down
GigabitEthernet1/0/12  unassigned      YES unset  administratively down down
GigabitEthernet1/0/13  unassigned      YES unset  administratively down down
GigabitEthernet1/0/14  unassigned      YES unset  administratively down down
GigabitEthernet1/0/15  unassigned      YES unset  administratively down down
GigabitEthernet1/0/16  unassigned      YES unset  administratively down down
GigabitEthernet1/0/17  unassigned      YES unset  administratively down down
GigabitEthernet1/0/18  unassigned      YES unset  administratively down down
GigabitEthernet1/0/19  unassigned      YES unset  administratively down down
GigabitEthernet1/0/20  unassigned      YES unset  administratively down down
GigabitEthernet1/0/21  unassigned      YES unset  administratively down down
GigabitEthernet1/0/22  unassigned      YES unset  administratively down down
GigabitEthernet1/0/23  unassigned      YES unset  administratively down down
GigabitEthernet1/0/24  unassigned      YES unset  up                    up
GigabitEthernet1/0/25  unassigned      YES unset  administratively down down
GigabitEthernet1/0/26  unassigned      YES unset  administratively down down
GigabitEthernet1/0/27  unassigned      YES unset  administratively down down
GigabitEthernet1/0/28  unassigned      YES unset  administratively down down
Port-channel1          unassigned      YES unset  up                    up
S1#
S1#show etherchan summary
Flags:  D - down        P - bundled in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3      S - Layer2
        U - in use      N - not in use, no aggregation
        f - failed to allocate aggregator

        M - not in use, minimum links not met
        m - not in use, port not aggregated due to minimum links not met
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

        A - formed by Auto LAG


Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
1      Po1(SU)         PAgP      Gi1/0/1(P)  Gi1/0/2(P)

S1#
S1#show vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi1/0/3, Gi1/0/4, Gi1/0/5
                                                Gi1/0/7, Gi1/0/8, Gi1/0/9
                                                Gi1/0/10, Gi1/0/11, Gi1/0/12
                                                Gi1/0/13, Gi1/0/14, Gi1/0/15
                                                Gi1/0/16, Gi1/0/17, Gi1/0/18
                                                Gi1/0/19, Gi1/0/20, Gi1/0/21
                                                Gi1/0/22, Gi1/0/23, Gi1/0/25
                                                Gi1/0/26, Gi1/0/27, Gi1/0/28
5    Student                          active
10   Academics                        active    Gi1/0/6
15   Technician                       active
20   Students                         active
30   Guest                            active
99   Mgmnt and Native                 active
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup
S1#
S1#show interfaces trunk

Port        Mode             Encapsulation  Status        Native vlan
Gi1/0/24    on               802.1q         trunking      99
Po1         on               802.1q         trunking      99

Port        Vlans allowed on trunk
Gi1/0/24    10,20,30,99
Po1         10,20,30,99

Port        Vlans allowed and active in management domain
Gi1/0/24    10,20,30,99
Po1         10,20,30,99

Port        Vlans in spanning tree forwarding state and not pruned
Gi1/0/24    10,20,30,99
Po1         10,20,30,99
S1#
