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Cisco Catalyst 2950, Creating a Vlan that works.

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by jasonnewberger

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I am new to the entire cisco configuring thing but I try and sometimes I run into a few problems. The following I copied from the show conf command within my switch.

I am basically out of ip addresses for the machines on my network so I decided that I would attempt to create a vlan off an old 2950 that I had laying around so that I could get 23 or so extra devices on the network easily. I am now not sure what is wrong but I can't get an ip address when I plug into the ports of the switch and obviously I have port 1 plugged into the main network and from what I can tell ports 2 through 24 I have set to be on the BMWVLAN. Any ideas to which direction or commands that I have forgotten. Any help is appreciated.

s4.denver-merc.murraymotor#show config
Using 4246 out of 32768 bytes
!
! Last configuration change at 14:08:28 MST Thu Sep 25 2008 by mmi_admin
! NVRAM config last updated at 14:08:34 MST Thu Sep 25 2008 by mmi_admin
!
version 12.1
no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
service password-encryption
service sequence-numbers
!
hostname s4.denver-merc.murraymotor
!
enable secret 5 $1$D.Aq$bSGSDzuGnk1et0LRVnv4T.
enable password 7 141B1B0A0108232A29
!
username mmi_admin privilege 15 password 7 051A110A335818100C
clock timezone Mountain -7
clock summer-time MST recurring
wrr-queue bandwidth 10 20 70 1
wrr-queue cos-map 1 0 1
wrr-queue cos-map 2 2 4
wrr-queue cos-map 3 3 6 7
wrr-queue cos-map 4 5
mls qos map cos-dscp 0 8 16 26 32 46 48 56
ip subnet-zero
ip dhcp excluded-address 192.168.50.2 192.168.50.50
!
!
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
spanning-tree vlan 1 priority 28672
!
!
!
!
interface FastEthernet0/1
spanning-tree portfast
!
interface FastEthernet0/2
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/3
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/4
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/5
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/6
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/7
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/8
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/9
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/10
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/11
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/12
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/13
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/14
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/15
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/16
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/17
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/18
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/19
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/20
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/21
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/22
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/23
switchport access vlan 2
spanning-tree portfast
!
interface FastEthernet0/24
description X-Over to S1
switchport access vlan 2
switchport mode trunk
switchport nonegotiate
speed 100
duplex full
mls qos trust cos
auto qos voip trust
macro description cisco-switch | cisco-switch | cisco-switch | cisco-switch
spanning-tree link-type point-to-point
!
interface FastEthernet0/25
!
interface FastEthernet0/26
!
interface Vlan1
ip address 206.89.93.70 255.255.255.0
no ip route-cache
shutdown
!
interface Vlan2
ip address 192.168.50.1 255.255.255.0
no ip route-cache
!
ip default-gateway 206.89.93.254
ip http server
line con 0
login local
transport preferred none
stopbits 1
line vty 0 4
login local
transport preferred none
line vty 5 9
login local
transport preferred none
line vty 10 15
login
!
ntp clock-period 17179972
ntp server 192.110.68.15
ntp server 192.110.68.11 prefer
!
End

Here is some VLAN information

s4.denver-merc.murraymotor#show vlan

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/1, Fa0/25, Fa0/26
2 BMWVLAN2 active Fa0/2, Fa0/3, Fa0/4, Fa0/5
Fa0/6, Fa0/7, Fa0/8, Fa0/9
Fa0/10, Fa0/11, Fa0/12, Fa0/13
Fa0/14, Fa0/15, Fa0/16, Fa0/17
Fa0/18, Fa0/19, Fa0/20, Fa0/21
Fa0/22, Fa0/23, Fa0/24
3 VLAN0003 active
10 ISIS_Vlan active
1002 fddi-default act/unsup
1003 trcrf-default act/unsup
1004 fddinet-default act/unsup
1005 trbrf-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
2 enet 100002 1500 - - - - - 0 0
3 enet 100003 1500 - - - - - 0 0
10 enet 100010 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 trcrf 101003 4472 1005 3276 - - srb 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trbrf 101005 4472 - - 15 ibm - 0 0

VLAN AREHops STEHops Backup CRF
---- ------- ------- ----------
1003 0 0 off

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------

Thanks

Jason

4 replies

by netman1958

What do you mean by
" I can't get an ip address when I plug into the ports of the switch"
Do you mean your pc doesn't get assigned an ip address from the dhcp server?

I am confused by this
"I am basically out of ip addresses for the machines on my network so I decided that I would attempt to create a vlan off an old 2950 that I had laying around so that I could get 23 or so extra devices on the network easily."
Are you out of ip addresses or out of ports? Adding another switch and VLAN won't give you more ip addresses unless you assign a different subnet to the new VLAN and in that case you will need a layer 3 device to route traffic between the separate VLANs.

by jasonnewberger

You, you know...you are absolutely correct I will need a layer 3 device. I am out of ip addresses so I think I will need to get a 2960 or 3560 or equivilent.

by netman1958

A 2960 isn't multilayer. You will need a 3550 or 3560.

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