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Cisco Catalyst 9500 Series Manual

Cisco Catalyst 9500 Series Switches Manuals

Switch#show interfaces status
Switch#show mac address-table
Switch#show ip igmp snooping
Switch#show lldp
Switch#show lldp neighbors
Switch#show lldp neighbors detail
Switch#show system mtu
Switch#show platform hardware capacity
Switch#show interfaces | include MTU

Cisco Catalyst 9500 Series Switches Hardware Installation Guide

CommandReference, Cisco IOS XE 17.15.x (Catalyst 9500 Switches)

Password

enable
configure terminal
enable password NEW_PASSWORD
enable secret NEW_PASSWORD
exit
configure terminal
line console 0
password NEW_PASSWORD
login
exit
configure terminal
username USERNAME password NEW_PASSWORD
exit
write mem
show running-config | include username

Note:For enhanced security, enable password encryption on the switch: service password-encryption

Basic cli

Switch# configure terminal
Switch(config)#
Switch(config)#hostname <switch_name>
Switch(config)#hostname Cisco_switch_x
Switch(config)#interface vlan1
Switch(config)#no shutdown
Switch(config-if)#ip address<ipaddress><mask>
Switch(config-if)#ip address 172.16.29.10 255.255.0.0
Switch(config)#enable secret <password>
Switch(config)#enable secret P@$$w0^d
Switch(config)# username admin privilege 15 password <PASSWORD>
Switch(config)# username admin privilege 15 password P@$$w0^d
Switch(config)# ip default-gateway <IP-address>
Switch(config)# ip default-gateway 172.16.29.1
Switch# show ip route
Switch(config)# line con 0
Switch(config-line)# password p@$$w0^d
Switch(config-line)# login
Switch(config)# exit
Switch(config)# line vty 0 4
Switch(config-line)# password p@$$w0^d
Switch(config-line)# login
Switch(config)# exit
Switch(config)# line aux 0
Switch(config-line)# password p@$$w0^d
Switch(config-line)# login
Switch(config)# exit
Switch(config)# ip route <dest_IP_address> <mask>
Switch(config)# ip route 172.16.29.59 255.255.0.0
Switch# show running-config
Switch(config)#interface fastethernet 0/1
Switch(config-if)#description Development VLAN
Switch(config-if)#duplex full
Switch#write memory
Building configuration... [OK]
Switch#

Allow IP Forwarding Globally

configure terminal
ip routing
ip forward-protocol udp

interface Vlan10
ip address 192.168.1.1 255.255.255.0
no shutdown

interface Vlan20
ip address 192.168.2.1 255.255.255.0
no shutdown

Enable Multicast Routing

enable
configure terminal
ip multicast-routing
ip pim sparse-mode

interface INTERFACE_ID
ip pim sparse-mode

ip pim rp-address RP_IP_ADDRESS
ip pim send-rp-announce INTERFACE scope TTL
ip pim send-rp-discovery INTERFACE scope TTL

ip igmp snooping
vlan VLAN_ID
ip igmp snooping
exit

show ip mroute
show ip pim neighbor
show ip pim rp
show ip igmp groups

Example Configuration

Scenario:
Multicast source: 192.168.1.10
RP: 192.168.1.1
VLAN 10 and VLAN 20 are participating in multicast.
Configuration:

ip multicast-routing
ip pim rp-address 192.168.1.1

interface Vlan10
ip address 192.168.1.1 255.255.255.0
ip pim sparse-mode

interface Vlan20
ip address 192.168.2.1 255.255.255.0
ip pim sparse-mode

Example

enable
configure terminal
ip igmp snooping

vlan 1
ip igmp snooping
vlan 500
ip igmp snooping
vlan 501
ip igmp snooping
vlan 502
ip igmp snooping
vlan 503
ip igmp snooping
vlan 504
ip igmp snooping
vlan 505
ip igmp snooping
vlan 506
ip igmp snooping
vlan 507
ip igmp snooping
vlan 508
ip igmp snooping
vlan 509
ip igmp snooping
vlan 510
ip igmp snooping
vlan 511
ip igmp snooping
vlan 512
ip igmp snooping
vlan 513
ip igmp snooping
vlan 514
ip igmp snooping
vlan 515
ip igmp snooping
vlan 516
ip igmp snooping
vlan 517
ip igmp snooping
vlan 518
ip igmp snooping
vlan 519
ip igmp snooping
vlan 520
ip igmp snooping
vlan 521
ip igmp snooping
vlan 522
ip igmp snooping
vlan 523
ip igmp snooping
vlan 524
ip igmp snooping
vlan 525
ip igmp snooping
vlan 526
ip igmp snooping
vlan 527
ip igmp snooping

Enable LLDP Globally

enable
configure terminal
lldp run

interface INTERFACE_ID
lldp transmit
lldp receive
exit

show lldp
show lldp neighbors
show lldp neighbors detail

lldp timer 60
lldp holdtime 180

write memory

Example

configure terminal
lldp run
lldp timer 60
lldp holdtime 180

interface GigabitEthernet1/0/1
lldp transmit
lldp receive

interface GigabitEthernet1/0/2
lldp transmit
lldp receive
write memory

Example

enable
configure terminal
lldp run

interface TwentyFiveGigE1/0/1
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/2
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/3
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/4
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/5
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/6
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/7
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/8
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/9
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/10
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/11
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/12
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/13
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/14
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/15
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/16
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/17
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/18
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/19
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/20
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/21
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/22
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/23
lldp transmit
lldp receive
interface TwentyFiveGigE1/0/24
lldp transmit
lldp receive
interface HundredGigE1/0/25
lldp transmit
lldp receive
interface HundredGigE1/0/26
lldp transmit
lldp receive
interface HundredGigE1/0/27
lldp transmit
lldp receive
interface HundredGigE1/0/28
lldp transmit
lldp receive

Verify MTU Support

show system mtu
show platform hardware capacity

configure terminal
system mtu jumbo 9000
exit
write memory
reload
  
show system mtu
show interfaces | include MTU

interface INTERFACE_ID
mtu 9000
exit

Example

configure terminal
system mtu jumbo 9000
interface GigabitEthernet1/0/1
mtu 9100
exit
write memory
reload

—-

If you don't see VLAN information in the running configuration on a Cisco switch, it could be because the default VTP mode is causing the VLAN database information to appear in another file. To force the configuration to appear in the running configuration, you can use the command vtp mode transparent.

Explanation

To display VLAN information on a Cisco switch, you can use the show switch vlan command in privileged EXEC mode. The show run command displays the complete configuration of a Cisco router or switch, which can be very long and have thousands of lines.

The default VTP mode causes VLAN database information to appear in the vlan.dat file

Port-channel

enable
configure terminal
interface range GigabitEthernet1/0/1 - 2
channel-group 1 mode active

interface Port-channel1
switchport
switchport mode trunk
switchport trunk allowed vlan 10,20,30

For Layer 3 (used for routing):
no switchport
ip address 192.168.1.1 255.255.255.0
exit


show etherchannel summary
show lacp neighbor
show running-config interface Port-channel1

Port-channel Example 1

interface range GigabitEthernet1/0/1 - 2
channel-group 1 mode active

interface Port-channel1
switchport
switchport mode trunk
switchport trunk allowed vlan 10,20,30

Port-channel Example 2

!
interface Port-channel1
 description *** Port-Channel to XYZ***
 switchport
 switchport mode trunk
 switchport nonegotiate
 logging event bundle-status
!

!
interface TwentyFiveGigE1/0/5
 description *** Port-Channel to XYZ***
 switchport
 switchport mode trunk
 switchport nonegotiate
 logging event link-status
 logging event trunk-status
 logging event bundle-status
 udld port aggressive
 channel-protocol lacp
 channel-group 1 mode active
 service-policy input AutoQos-4.0-Trust-Cos-Input-Policy
 service-policy output AutoQos-4.0-Output-Policy
!

Basic cli example

configure terminal
hostname cisco_switch_x
interface vlan ip address 172.16.29.10 255.255.0.0
no shutdown
exit
enable secret P@$$w0^d
username admin privilege 15 password P@$$w0^d
ip default-gateway 172.16.29.1
show ip route
ip route 172.16.29.59 255.255.0.0
show running-config
interface fastethernet 0/1
description Development VLAN
duplex full
exit
write memory

Stop Cisco console messages

enable
configure terminal
terminal no monitor
no logging console
logging console warnings
show logging
write memory

Disable STP on a Specific VLAN

configure terminal
vlan VLAN_ID
no spanning-tree vlan VLAN_ID
write memory
show spanning-tree vlan VLAN_ID
show spanning-tree

no spanning-tree vlan 1-4094

interface INTERFACE_ID
spanning-tree portfast

Example

no spanning-tree vlan 1
no spanning-tree vlan 500
no spanning-tree vlan 501
no spanning-tree vlan 502
no spanning-tree vlan 503
no spanning-tree vlan 504
no spanning-tree vlan 505
no spanning-tree vlan 506
no spanning-tree vlan 507
no spanning-tree vlan 508
no spanning-tree vlan 509
no spanning-tree vlan 510
no spanning-tree vlan 511
no spanning-tree vlan 512
no spanning-tree vlan 513
no spanning-tree vlan 514
no spanning-tree vlan 515
no spanning-tree vlan 516
no spanning-tree vlan 517
no spanning-tree vlan 518
no spanning-tree vlan 519
no spanning-tree vlan 520
no spanning-tree vlan 521
no spanning-tree vlan 522
no spanning-tree vlan 523
no spanning-tree vlan 524
no spanning-tree vlan 525
no spanning-tree vlan 526
no spanning-tree vlan 527