well, I need the unit to have an IP for monitoring/graphing/manage
In my experience, the unit is far more routerlike than switchlike...
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Question
How to setup a 2948g-l3 as an L2 switch?
I'm pretty sure that this is just a simple config option, but how do I set up a Cisco catalyst 2948G L3 to function just as a switch, without its layer 3 functionality?
Any config examples would be very helpful!
thanks in advance for this easy but important question.
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Answers
You can still assign an IP address to VLAN1 for management purposes but as long as you don't create other VLANs on the switch, no routing will occur or is necessary. If you still want multiple VLANs on the switch but without routing between them, use the "no ip routing" command in terminal configuration mode and you will have a layer 2 only switch.
Well, it's close...
The goal:
The goal is to have the 2948 function purely as a switch with the exception of having an IP 0address for maintenance.
The theory:
Port one is in it's own bridge group and is numbered as 192.168.0.2 and is connected to a management router with an address of 192.168.0.1.
The problem: throughput is not what it should be, connections for file transfers between nodes are very slow and are timing out.
Here's the config as is:
Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname back-2948
!
enable secret 5 $1$rZWi$1CD
!
sdm size ipx-bvi-network 32
sdm size ip-adjacency 2048
sdm size ipx-node 2048
sdm size ip-prefix 8192
sdm size ipx-network 6144
sdm size ip-mcast 3072
sdm size udp-flooding 256
sdm size l2-switching 1024
sdm autolearn
ip subnet-zero
!
!
!
interface FastEthernet1
ip address 192.168.0.2 255.255.255.0
no ip directed-broadcast
duplex full
speed 100
!
interface FastEthernet2
no ip address
no ip directed-broadcast
duplex half
speed 10
bridge-group 2
!
interface FastEthernet3
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet4
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet5
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet6
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet7
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet8
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet9
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet10
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet11
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet12
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet13
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet14
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet15
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet16
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet17
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet18
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet19
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet20
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet21
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet22
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet23
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet24
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet25
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet26
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet27
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet28
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet29
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet30
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet31
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet32
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet33
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet34
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet35
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet36
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet37
no ip address
no ip directed-broadcast
duplex full
speed 10
bridge-group 2
!
interface FastEthernet38
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet39
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet40
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet41
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet42
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet43
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet44
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet45
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet46
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet47
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface FastEthernet48
no ip address
no ip directed-broadcast
duplex full
speed 100
bridge-group 2
!
interface GigabitEthernet49
no ip address
no ip directed-broadcast
shutdown
!
interface GigabitEthernet50
no ip address
no ip directed-broadcast
shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.0.1
!
snmp-server community the-public RO
bridge 2 protocol ieee
!
line con 0
transport input none
line aux 0
line vty 0 4
password thankyou
login
!
end
Thank you all so much!
end
Don't know if you got the problem sorted but I see from your config that you have all ports set to 100/full. If you manually set one end then the other end must allso be specifically configured. If the clients are set to auto then you will probably find that they have audiscovered to a speed of 100/half and this is what is causing your speed problem.
Setting the switch to auto or the clients to 100/full should fix the speed issue.
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by: pseudocyberPosted on 2004-02-25 at 09:41:50ID: 10452369
Don't configure any VLANs. By default, all the ports will be in the same VLAN. Don't assign an IP address to the default VLAN - you'll have a Layer 2 switch only.