3750G configuration

[D3savage]

Hi I am a bit of a super noob ...... the long and short is I purchased a second hand pre loved 3750G 24 switch for home use. In all honesty I don't really want to dig deep into cisco programming...although I can see lots of good things are available. To give you some background......... I want to use the switch for connecting 7 ethernet cat 6 points situated across my house - these are used for:- general computing, smart TV's, DVR's,streamers etc. So I have seven cables coming into the switch, 3 more from a unifi wireless system - (2 ap's and one cloud key) I also intend in the near future to install a digital security system - using poe cameras from ubiquiti G3's  AF models.

So my thoughts were - I would need more ports - poe - and the possibility of maybe creating a vlan for 4 security cameras so that the traffic generated by constant streams - did not effect my general network traffic.

I am hoping somebody here could hold my hand advise me - and help me set up the switch. 

I have been told my switch has been set to its base factory config - and I have tried it with my laptop it found the laptop and connected to the internet just fine. Currently my cisco switch is connected via one of the lan ports to my Asus router DSL AC68U ........ 

It would be very much appreciated if somebody - could advise me and help me through this step by step - kind regards

[Georg Pauwen]

Anything DHCP related is susceptible to delays, so you might want to configure 'spanning-tree portfast (trunk)' on all access and trunk (edit: be aware of possible loops before configuring the trunk) ports...

[D3savage]

Hi i tested differnet routers the asus did exactly the same. If a lone pc is connected directly it is fine, then you can put it to an unmanaged switch and it works great. something is preventing the initial handshake...........I think timing could be the reason - as the handshake with the pc direct takes a few seconds. I am going to try ....... switchport mode access, 
spanning-tree portfast and see what happens........

[D3savage]

Thanks for your advice so far much appreciated.

[D3savage]

configure terminal
hostname xxxxxxxxxxx
enable secret desert11
line vty 0 15
password xxxxxxxxxxxxx
login
exit

line console 0
password xxxxxxxxxxxxx
exit

interface vlan1
ip address 192.168.1.3 255.255.255.0
no shut
exit

ip default-gateway 192.168.1.1

vlan database
vlan 1 name xxxxxxxxx (Put in my name for Vlan)
VLAN 1 modified:
exit

ip dhcp pool vlan 1
network 192.168.1.1 255.255.255.0
default-router 192.168.1.1
dns-server 208.67.222.222 208.67.220.220
lease 7
exit

ip dhcp excluded 192.168.1.1 192.168.1.4

ip dhcp snooping
ip dhcp snooping vlan 1

interface range f0/1 - 24
switchport access vlan 1
switchport mode access
spanning-tree portfast
ip dhcp snooping trust
exit

interface GigabitEthernet0/1
switchport mode trunk
switchport trunk allowed vlan all
exit

interface Gi1/0/7
power inline reset
power inline high-power
power inline limit none
power inline priority critical
exit

end

[Mark Malone]

if your going to use DHCP snooping which is optional you need to trust the trunk uplinks too

[D3savage]

Hi ........ I have been fed up configuring my switch in the loft! ........ so I have configured it to use Telnet. All went well ........ however I had the port 23 issue at the CMD prompt ......... I believe the service needs switching on in windows.... so that is not an issue and I will fix this tonight. The issue I do have is when i now ping my Cisco switch ........ I loose 25% of the packets. The switch is currently  at factory settings...with just the telnet config enabled. What is the likely culprit for loosing 25% of the packets???? Have you any pointers????

[Mark Malone]

unlikely due to telnet more likely the path your coming over the physical cabling may have an issue , check the interface for errors that your coming in across show int x/x look for input or crc errors on the switch port , reseat the cable , could be lose somewhere too

[D3savage]

Hi all Telnet is now working and I have pings working nicely.......... I plugged my nas into it and can view it on my network just great. I am going to test plugging in my unmanaged zyxel gigabit switch into the cisco and see if I can use as normal - by connecting my nas to zyxel and that to the cisco .......fingers crossed. If all goes well ...next will be to test the poe.

I will keep you all posted.........

[D3savage]

Hi ok .... switch all working it passes the unmanaged switches just great!!!  Now all I need to do is get poe working...I plugged in an 802.af poe ubiquiti converter to drop voltage to 24v poe and plugged in my G3 camera in.....nothing.... can anyone advise on the cisco config for the poe....  

[D3savage]

Hi a quick question I want to try and apply the following command..........

Switch(config)# int x/y
Switch(config-if)# power inline port 2x-mode
Switch(config-if)# shut
Switch(config-if)# no shut

Ok ..... note I can get as far as the switch(config)#     .......... but I cannot get into the  -if ... (is this the interface?)   ....

when I apply Swithch(config)# int  .............. what comes next ... is it the name of the ports like Gi1/0/24?????

.... do I need to do a show run  ........ to see what the ports are called on Vlan 1  ..... can you advise???

(sorry for noob questions.......)

[Mark Malone]

Hi
Show ip int brief for the ports and show vlan whats the ports are assigned to will help

[D3savage]

Hi I did a sh power inline .................... all the ports in location 7 (which is 1-24) show n/a ......see jpg below.....whats going on this is supposed to be a poe switch .......... do I need to assign something to each port??? Can you help. How do I switch poe on?????

[Mark Malone]

I dont get this ----all the ports in location 7 (which is 1-24)

whats that screenshot off it says module 7 , its not a 3750 switch output ?

theres no power available for that module either way , if the post the full show module and show version commands we can tell for sure

[D3savage]

Hi mark ..... I wondered this ......... all ports seem to be in  zone 7???? I will try and get a comprehensive output - from the config so you can see - how it is set up. All I have done is do a factory reset - then sut up ip and default gateway ..... and got Telnet to work. So everything should be on Vlan 1 . Which I am happy with. I don't know where this  zone 7 has come from. I will check it out tonight...

[Mark Malone]

yes the show version and show module will tell us whats going on when you get a chance and at same time answer the POE questions