2960 switch passthrough switch

[wgranada1]

I have a quick quesiton here and not sure if I'm doing this right but my corporate network folks gave me 2 ports on the core switch now I have

2 server on 2 different subnets which is fine.  the issue comes along is that my corporate network will not allocate my anymore switch ports on the core switch they told me if I wanted to add more devices I would need an intermidiate switch.  So the question is the 2 servers each requires a tape drive, has a management console and then your normal NIC card so each server will require 3 connection.  Do I need to buy 2 seperate 2960 switches or can I

use one 2960 and configure 2 vlans on them and use it as a pass through switch to the core switch.  I hope this makes sense....thank you in advance

[Reza Sharifi]

All you need is one 2960.  You can then connect the 2960 to the core switch and create multiple VLANs and have the default gateway for each subnet/vlan be you core switch.

HTH

Reza

[wgranada1]

Thank you for the response but can you please give me an example?  So if I understand you lets say I have created 2 vlans

192.168.10.0/24 vlan10 and 192.168.20.0/24  vlan 20 so then from what you are saying is that I can use one 2960 and

create a trunk port to the core switch and have the default gateway for each vlan so if I create a trunk port on

say g0/1 and have a default gateway of 192.168.10.1 then I would be able to route both vlan 10 and 20 out that

gateway?

[rtjensen4 · Accepted solution]

You can do it two ways:

1. Create a trunk from your 2960 to the core switch (If the network folks will permit that)

you just create the layer 2 vlans and assign ports to it.:

Example:

From Config mode:

vlan 10

vlan 20

!

interface FastEthernet0/1

switchport access vlan 10

!

interface FastEthernet0/2

switchport access vlan 10

!

interface FastEthernet0/3

switchport access vlan 10

!

interface FastEthernet0/4

switchport access vlan 20

!

interface FastEthernet0/5

switchport access vlan 20

!

interface FastEthernet0/6

switchport access vlan 20

!

interface FastEthernet 0/24

description Uplink to Core Switch

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 10,20

! {port will try to create trunk by default, but you can explicitly tell it to attempt a trunk. This all depends on how the core switch's ports are configured}

switchport mode dynamic desirable

!

interface vlan10

description For Managment of the 2960 ONLY

ip address 192.168.10.250 255.255.255.0

!

ip default-gateway

2. If the network folks won't let you create a trunk for whatever reason, You can do similar to the number 1, but instead, create one additional port in each vlan and use both of the access ports assigned by your network guys.

Example:

From Config mode:

vlan 10

vlan 20

!

interface FastEthernet0/1

switchport access vlan 10

!

interface FastEthernet0/2

switchport access vlan 10

!

interface FastEthernet0/3

switchport access vlan 10

!

interface FastEthernet0/4

switchport access vlan 20

!

interface FastEthernet0/5

switchport access vlan 20

!

interface FastEthernet0/6

switchport access vlan 20

!

interface FastEthernet0/7

description Connection to Core VLAN 10

switchport mode access

switchport access vlan 10

!

interface FastEthernet0/8

description Connection to Core VLAN 20

switchport mode access

switchport access vlan 20

!

interface vlan10

description For Managment of the 2960 ONLY

ip address 192.168.10.250 255.255.255.0

!

ip default-gateway

[wgranada1]

thank you will have that a go and see what happens

[Reza Sharifi · Accepted solution]

Also, have a look at the config guide for the 2960 series switches:

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_25_see/configuration/guide/swvlan.html

HTH

Reza

[wgranada1]

Sorry for the delay I'm trying to get together with our coporate network person so we can test but so far no luck

[wgranada1]

Sorry for the late response but we finally was able to test and all is good, they wouldn't let us do a trunk port so had to go with the second option

Thank you for that!!!