Changing the baud rate on a Cisco 3650

Unfortunately the only way to do this is from ROMMON mode - so in order to easily access it we can instruct the switch to automatically enter it on the next reload:

conf t
boot enable-break

or alternatively power of the switch, hold down the 'Mode' button, turn the switch on (while still holding the 'Mode' button) for around 15 seconds.

Then set the baud rate appropriately:

set BAUD 9600

boot the IOS image:

flash_init
boot

and finally once it's booted up ensure that we revoke the 'enable-break' command:

conf t
no boot enable-break

QoS for telephony on the 3650

Below is an example of QoS you can apply for telephony on the 3650. Ingress traffic on gi1/0/1 is marked accordingly and then queued according to the service-policy on gi1/0/24.

# Input QoS

ip access-list extended VOIP
 permit udp any range 16384 32767 any range 16384 32767

ip access-list extended MULTIMEDIA-CONFERENCING
 permit udp any any range 16384 32767

ip access-list extended CALL-SIGNALING
 ! SCCP
 10 permit tcp any any range 2000 2002
 ! SIP
 20 permit tcp any any range 5060 5061
 30 permit udp any any range 5060 5061
 ! H.323
 40 permit udp any any range 1718 1719
 permit tcp any any eq 1720
 ! MGCP
 50 permit tcp any any eq 2428
 60 permit tcp any eq 2428 any
 70 permit udp any any eq 2427
 80 permit udp any eq 2427 any

ip access-list extended TRANSACTIONAL-DATA
 10 permit tcp any any eq 443
 20 permit tcp any any eq 1521
 30 permit udp any any eq 1521
 40 permit tcp any any eq 1526
 50 permit udp any any eq 1526
 60 permit tcp any any eq 1575
 70 permit udp any any eq 1575
 80 permit tcp any any eq 1630
 90 permit udp any any eq 1630
 100 permit tcp any any eq 1527
 110 permit tcp any any eq 6200
 120 permit tcp any any eq 3389
 130 permit tcp any any eq 5985
 140 permit tcp any any eq 8080

ip access-list extended BULK-DATA
 10 permit tcp any any eq 22
 20 permit tcp any any eq 465
 30 permit tcp any any eq 143
 40 permit tcp any any eq 993
 50 permit tcp any any eq 995
 60 permit tcp any any eq 1914
 70 permit tcp any any eq ftp
 80 permit tcp any any eq ftp-data
 90 permit tcp any any eq smtp
 100 permit tcp any any eq pop3

ip access-list extended SCAVENGER
 10 permit tcp any any range 2300 2400
 20 permit udp any any range 2300 2400
 30 permit tcp any any range 6881 6999
 40 permit tcp any any range 28800 29100
 50 permit tcp any any eq 1214
 60 permit udp any any eq 1214
 70 permit tcp any any eq 3689
 80 permit udp any any eq 3689
 90 permit tcp any any eq 11999

class-map VOIP
 match access-group name VOIP
class-map MULTIMEDIA-CONFERENCING
 match access-group name MULTIMEDIA-CONFERENCING
class-map CALL-SIGNALING
 match access-group name CALL-SIGNALING
class-map TRANSACTIONAL-DATA
 match access-group name TRANSACTIONAL-DATA
class-map BULK-DATA
 match access-group name BULK-DATA
class-map SCAVENGER
 match access-group name SCAVENGER

policy-map MARKING-POLICY
 class VOIP
 set dscp ef
 class MULTIMEDIA-CONFERENCING
 set dscp af41
 class CALL-SIGNALING
 set dscp cs3
 class TRANSACTIONAL-DATA
 set dscp af21
 class BULK-DATA
 set dscp af11
 class SCAVENGER
 set dscp cs1
 class class-default
 set dscp default

int gi1/0/1
 service-policy input MARKING-POLICY

# Output QoS

class-map match-any VOICE-QUEUE
 match dscp ef
 match dscp cs5
 match dscp cs4
class-map match-all MULTIMEDIA-CONFERENCING-QUEUE
 match dscp af41 af42 af43
class-map match-all MULTIMEDIA-STREAMING-QUEUE
 match dscp af31 af32 af33
class-map match-any NETWORK-CONTROL-QUEUE
 match dscp cs7
 match dscp cs6
class-map match-any SIGNALING-QUEUE
 match dscp cs3
 match dscp cs2
class-map match-all TRANSACTIONAL-DATA-QUEUE
 match dscp af21 af22 af23
class-map match-all BULK-SCAVENGER-DATA-QUEUE
 match dscp af11 af12 af13 cs1

policy-map qos_pm_2P6Q3T_out
 class VOICE-QUEUE
 priority level 1
 police rate percent 10
 class MULTIMEDIA-CONFERENCING-QUEUE
 bandwidth remaining percent 10
 queue-buffers ratio 10
 queue-limit dscp af43 percent 80
 queue-limit dscp af42 percent 90
 queue-limit dscp af41 percent 100
class MULTIMEDIA-STREAMING-QUEUE
 bandwidth remaining percent 10
 queue-buffers ratio 10
 queue-limit dscp af33 percent 80
 queue-limit dscp af32 percent 90
 queue-limit dscp af31 percent 100
class NETWORK-CONTROL-QUEUE
 bandwidth remaining percent 7
 queue-buffers ratio 10
 class SIGNALING-QUEUE
 bandwidth remaining percent 3
 queue-buffers ratio 10
class TRANSACTIONAL-DATA-QUEUE
 bandwidth remaining percent 30
 queue-buffers ratio 10
 queue-limit dscp af23 percent 80
 queue-limit dscp af22 percent 90
 queue-limit dscp af21 percent 100
class BULK-SCAVENGER-DATA-QUEUE
 bandwidth remaining percent 5
 queue-buffers ratio 10
 queue-limit dscp values af13 cs1 percent 80
 queue-limit dscp values af12 percent 90
 queue-limit dscp values af11 percent 100
class class-default
 bandwidth remaining percent 25
 queue-buffers ratio 25

int gi1/0/24
 service-policy output qos_pm_2P6Q3T_out