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Helpful
4
Replies

Why vlan1 continues 'down', I can't ping it?

news2010a
Level 3
Level 3

On my local 3560 switch, I defined vlan1 as shown below. Then I see that in spite of my 'no shut' command', line protocol remains down. Why is like that? Of course from there I can't ping it. What do I need to do in order to make this vlan turns to 'line protocol up'?

#show int vlan1

Vlan1 is up, line protocol is down

3560new#show run

Building configuration...

Current configuration : 2134 bytes

!

version 12.1

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname 3560new

!

!

ip subnet-zero

ip routing

!

vtp mode transparent

!

spanning-tree mode pvst

no spanning-tree optimize bpdu transmission

spanning-tree extend system-id

!

!

!

interface Loopback0

ip address 192.169.202.16 255.255.255.0

!

interface FastEthernet0/1

no ip address

no mdix auto

!

interface FastEthernet0/2

no ip address

no mdix auto

!

interface FastEthernet0/3

no ip address

no mdix auto

!

interface FastEthernet0/4

no ip address

no mdix auto

!

interface FastEthernet0/5

no ip address

no mdix auto

!

interface FastEthernet0/6

no ip address

no mdix auto

!

interface FastEthernet0/7

no ip address

no mdix auto

!

interface FastEthernet0/8

no ip address

no mdix auto

!

interface FastEthernet0/9

no ip address

no mdix auto

!

interface FastEthernet0/10

no ip address

no mdix auto

!

interface FastEthernet0/11

no ip address

no mdix auto

!

interface FastEthernet0/12

no ip address

no mdix auto

!

interface FastEthernet0/13

no ip address

no mdix auto

!

interface FastEthernet0/14

no ip address

no mdix auto

!

interface FastEthernet0/15

no ip address

no mdix auto

!

interface FastEthernet0/16

no ip address

no mdix auto

!

interface FastEthernet0/17

no ip address

no mdix auto

!

interface FastEthernet0/18

no ip address

no mdix auto

!

interface FastEthernet0/19

no ip address

no mdix auto

!

interface FastEthernet0/20

no ip address

no mdix auto

!

interface FastEthernet0/21

no ip address

no mdix auto

!

interface FastEthernet0/22

no ip address

no mdix auto

!

interface FastEthernet0/23

no switchport

ip address 150.x.x.251 255.255.255.248

duplex full

speed 100

no mdix auto

fair-queue

!

interface FastEthernet0/24

no switchport

no ip address

no mdix auto

!

interface GigabitEthernet0/1

no ip address

!

interface GigabitEthernet0/2

no ip address

!

interface Vlan1

ip address 150.x.x.101 255.255.255.248

!

interface Vlan2

ip address 150.x.x.137 255.255.255.248

shutdown

!

ip classless

ip http server

!

!

line con 0

line vty 5 15

!

end

#show int vlan1

Vlan1 is up, line protocol is down

1 Accepted Solution

Accepted Solutions

bjw
Level 4
Level 4

I believe you need at least 1 interface on VLAN 1 UP/UP - Connected - for the VLAN to show up/up

View solution in original post

4 Replies 4

bjw
Level 4
Level 4

I believe you need at least 1 interface on VLAN 1 UP/UP - Connected - for the VLAN to show up/up

glen.grant
VIP Alumni
VIP Alumni

You need at least one active port in the vlan in order to bring up the SVI .

Richard Burts
Hall of Fame
Hall of Fame

Marlon

Is there at least one interface with something plugged into it which is in VLAN 1? There needs to be an up/up interface within the VLAN for the VLAN to be in an up state.

HTH

Rick

HTH

Rick

That makes sense. Since I made the port fa0/23 and fa0/24 as 'no switchport', then those are plugged but they are no longer part of vlan1, hence this behavior. I will plug something in there later. Thanks!

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