Adding network to catalyst

[strayrog]

I have a Cisco Catalyst 4506 in a small office. Currently there is only subnet 192.168.10.0/24 but I need to add another subnet192.168.20.0/24. I would like to add them to the same vlan 1. How do I do that?

Thanks

 

[rmcp2k]

show us the running config please

 

[vipergg]

If it has to be in the same vlan (not good practice) then the only way to do that is add the new network as a secondary address on the vlan 1 SVI

 

[octavian10]

You have a layer 3 switch, make another vlan and configure a port or a virtual port for inter vlan routing.

"I hear and I forget. I see and I remember. I do and I understand."
- Confucius (551 BC - 479)

 

[strayrog]

Here is the config as requested:

show running-config
Building configuration...

Current configuration : 13284 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service compress-config
!
hostname Switch
!
enable password xxxxxxxxxxxxxxxx
!
ip subnet-zero
ip icmp rate-limit unreachable 100
!
spanning-tree mode pvst
spanning-tree extend system-id
power dc input 2500
!
!
!
!
interface GigabitEthernet1/1
!
interface GigabitEthernet1/2
!
interface GigabitEthernet2/1
switchport mode access
speed 100
duplex full
spanning-tree portfast
!
interface GigabitEthernet2/2
!
interface GigabitEthernet2/3
!
interface GigabitEthernet2/4
!
interface GigabitEthernet2/5
!
interface GigabitEthernet2/6
!
interface GigabitEthernet2/7
!
interface GigabitEthernet2/8
!
interface GigabitEthernet2/9
!
interface GigabitEthernet2/10
!
interface GigabitEthernet2/11
!
interface GigabitEthernet2/12
!
interface GigabitEthernet2/13
!
interface GigabitEthernet2/14
!
interface GigabitEthernet2/15
!
interface GigabitEthernet2/16
!
interface GigabitEthernet2/17
!
interface GigabitEthernet2/18
!
interface GigabitEthernet2/19
!
interface GigabitEthernet2/20
!
interface GigabitEthernet2/21
!
interface GigabitEthernet2/22
!
interface GigabitEthernet2/23
!
interface GigabitEthernet2/24
!
interface GigabitEthernet2/25
!
interface GigabitEthernet2/26
!
interface GigabitEthernet2/27
!
interface GigabitEthernet2/28
!
interface GigabitEthernet2/29
!
interface GigabitEthernet2/30
!
interface GigabitEthernet2/31
!
interface GigabitEthernet2/32
!
interface GigabitEthernet2/33
!
interface GigabitEthernet2/34
!
interface GigabitEthernet2/35
!
interface GigabitEthernet2/36
!
interface GigabitEthernet2/37
!
interface GigabitEthernet2/38
!
interface GigabitEthernet2/39
!
interface GigabitEthernet2/40
!
interface GigabitEthernet2/41
!
interface GigabitEthernet2/42
!
interface GigabitEthernet2/43
!
interface GigabitEthernet2/44
!
interface GigabitEthernet2/45
!
interface GigabitEthernet2/46
!
interface GigabitEthernet2/47
!
interface GigabitEthernet2/48
!
interface GigabitEthernet3/1
!
interface GigabitEthernet3/2
!
interface GigabitEthernet3/3
!
interface GigabitEthernet3/4
!
interface GigabitEthernet3/5
!
interface GigabitEthernet3/6
!
interface GigabitEthernet3/7
!
interface GigabitEthernet3/8
!
interface GigabitEthernet3/9
!
interface GigabitEthernet3/10
!
interface GigabitEthernet3/11
!
interface GigabitEthernet3/12
!
interface GigabitEthernet3/13
!
interface GigabitEthernet3/14
!
interface GigabitEthernet3/15
!
interface GigabitEthernet3/16
!
interface GigabitEthernet3/17
!
interface GigabitEthernet3/18
!
interface GigabitEthernet3/19
!
interface GigabitEthernet3/20
!
interface GigabitEthernet3/21
!
interface GigabitEthernet3/22
!
interface GigabitEthernet3/23
!
interface GigabitEthernet3/24
!
interface GigabitEthernet3/25
!
interface GigabitEthernet3/26
!
interface GigabitEthernet3/27
!
interface GigabitEthernet3/28
!
interface GigabitEthernet3/29
!
interface GigabitEthernet3/30
!
interface GigabitEthernet3/31
!
interface GigabitEthernet3/32
!
interface GigabitEthernet3/33
!
interface GigabitEthernet3/34
!
interface GigabitEthernet3/35
!
interface GigabitEthernet3/36
!
interface GigabitEthernet3/37
!
interface GigabitEthernet3/38
!
interface GigabitEthernet3/39
!
interface GigabitEthernet3/40
!
interface GigabitEthernet3/41
!
interface GigabitEthernet3/42
!
interface GigabitEthernet3/43
!
interface GigabitEthernet3/44
!
interface GigabitEthernet3/45
!
interface GigabitEthernet3/46
!
interface GigabitEthernet3/47
!
interface GigabitEthernet3/48
!
interface GigabitEthernet4/1
!
interface GigabitEthernet4/2
!
interface GigabitEthernet4/3
!
interface GigabitEthernet4/4
!
interface GigabitEthernet4/5
!
interface GigabitEthernet4/6
!
interface GigabitEthernet4/7
!
interface GigabitEthernet4/8
!
interface GigabitEthernet4/9
!
interface GigabitEthernet4/10
!
interface GigabitEthernet4/11
!
interface GigabitEthernet4/12
!
interface GigabitEthernet4/13
!
interface GigabitEthernet4/14
!
interface GigabitEthernet4/15
!
interface GigabitEthernet4/16
!
interface GigabitEthernet4/17
!
interface GigabitEthernet4/18
!
interface GigabitEthernet4/19
!
interface GigabitEthernet4/20
!
interface GigabitEthernet4/21
!
interface GigabitEthernet4/22
!
interface GigabitEthernet4/23
!
interface GigabitEthernet4/24
!
interface GigabitEthernet4/25
!
interface GigabitEthernet4/26
!
interface GigabitEthernet4/27
!
interface GigabitEthernet4/28
!
interface GigabitEthernet4/29
!
interface GigabitEthernet4/30
!
interface GigabitEthernet4/31
!
interface GigabitEthernet4/32
!
interface GigabitEthernet4/33
!
interface GigabitEthernet4/34
!
interface GigabitEthernet4/35
!
interface GigabitEthernet4/36
!
interface GigabitEthernet4/37
!
interface GigabitEthernet4/38
!
interface GigabitEthernet4/39
!
interface GigabitEthernet4/40
!
interface GigabitEthernet4/41
!
interface GigabitEthernet4/42
!
interface GigabitEthernet4/43
!
interface GigabitEthernet4/44
!
interface GigabitEthernet4/45
!
interface GigabitEthernet4/46
!
interface GigabitEthernet4/47
!
interface GigabitEthernet4/48
!
interface FastEthernet6/1
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/2
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/3
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/4
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/5
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/6
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/7
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/8
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/9
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/10
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/11
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/12
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/13
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/14
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/15
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/16
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/17
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/18
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/19
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/20
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/21
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/22
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/23
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/24
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/25
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/26
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/27
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/28
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/29
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/30
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/31
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/32
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/33
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/34
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/35
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/36
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/37
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/38
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/39
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/40
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/41
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/42
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/43
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/44
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/45
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/46
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/47
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface FastEthernet6/48
switchport access vlan 20
switchport mode access
spanning-tree portfast
!
interface Vlan1
description Internal Default Gateway!
ip address 192.168.10.1 255.255.255.0
no ip route-cache
!
interface Vlan20
description Nortel BCM IP Telephony Network
ip address 192.168.128.1 255.255.255.0
no ip route-cache
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.10.2
ip route 192.168.1.0 255.255.255.0 192.168.10.3
ip route 192.168.11.0 255.255.255.0 192.168.10.4
ip http server
ip http access-class 1
!
ip community-list standard public permit local-AS
ip community-list standard private permit local-AS
!
!
access-list 1 permit 192.168.10.102
access-list 1 permit 192.168.10.119
access-list 199 permit ip host 10.10.15.4 host 192.168.128.2
access-list 199 permit ip host 192.168.128.2 host 10.10.15.4
access-list 199 permit ip host 10.10.15.4 host 192.168.128.1
access-list 199 permit ip host 192.168.128.1 host 10.10.15.4

snmp-server community public RO
snmp-server community xxxxxxxxxx RW
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps tty
snmp-server enable traps vtp
snmp-server enable traps vlancreate
snmp-server enable traps vlandelete
snmp-server enable traps stpx
snmp-server enable traps port-security
snmp-server enable traps config
snmp-server enable traps entity
snmp-server enable traps copy-config
snmp-server enable traps fru-ctrl
snmp-server enable traps flash insertion removal
snmp-server enable traps syslog
snmp-server enable traps bridge
snmp-server enable traps envmon fan shutdown supply temperature status
snmp-server enable traps hsrp
snmp-server enable traps bgp
snmp-server enable traps pim neighbor-change rp-mapping-change invalid-pim-message
snmp-server enable traps ipmulticast
snmp-server enable traps msdp
snmp-server enable traps rtr
snmp-server enable traps vlan-membership
snmp-server manager
snmp ifmib ifalias long
!
!
line con 0
stopbits 1
line vty 0 4
password xxxxxxxxxxxxx
no login
!
end

Switch#

 

[jeter]

I would encapsulate 802.1q or ISL and place in a differnt vlan. You should seperate voice and data. ALso you may want to look at QOS if your network slows down...

“Reserve your right to think, for even to think wrongly is better than not to think at all”

CCNA,CCNP,Network+
Tek-TIP Member 19,650

 

[vipergg]

your best bet is to creat another SVI say "vlan 2 and add that subnet range under that and then just put the ports into vlan 2 that you want on this new address range . Why do you want to leave the ports in vlan 1 ????

 

[strayrog]

Vipergg,

I was hoping to just keep things simple. Plus, I was hoping to avoid another vlan. But it is looking as if I will have to create the second vlan and just add the ports.

Thanks

 

[vipergg]

If you have to keep it in vlan 1 just add the new subnet range under vlan 1 as a secondary address .

 

[UnaBomber]

y subnet 192.168.10.0/24 but I need to add another subnet192.168.20.0/24. I would like to add them to the same vlan 1. How do I do that?

As described here you cant do that.

If you have to keep it in vlan 1 just add the new subnet range under vlan 1 as a secondary address .

How can you add a subnet address to a vlan? you can add an ip address to a layer3 interface as secondary, is that what you mean?

Regardless, i wouldnt recommend doing that, it is simpler to create another layer3 interface either physical or logical and add your new default gateway address for your new subnet to that. all you need to do after is switchport access vlan [id] on the interface range of switchports you need.

UnaBomber
ccnp mcse2k

 

[vipergg]

Yes that is correct you add the secondary to the layer 3 SVI , thought that was understood . I did recccomend he add a second SVI and apply the ports into the new vlan .