No connected route for VLAN interface

Unanswered Question
Jul 25th, 2007
User Badges:

I'm trying to add new VLANs to my Cisco 3750, but am having problems. I can add the vlan int and associate an IP with it, but I cannot ping the vlan interface, nor does it show up as a connected route when I do a show ip route. Here's the info below:


Building configuration...


Current configuration : 5515 bytes

!

version 12.2

no service pad

service timestamps debug uptime

service timestamps log uptime

service password-encryption

!

hostname Switch

!

enable secret

!

no aaa new-model

switch 1 provision ws-c3750-48ts

ip subnet-zero

ip routing

ip dhcp excluded-address 192.168.2.1 192.168.2.50

ip dhcp excluded-address 192.168.2.101 192.168.2.254

!

ip dhcp pool VLAN2

network 192.168.2.0 255.255.255.0

default-router 192.168.2.1

!

!

!

!

!

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

!

interface Loopback1

ip address 192.168.253.2 255.255.255.255

!

interface FastEthernet1/0/1

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/2

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/3

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/4

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/5

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/6

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/7

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/8

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/9

switchport access vlan 2

spanning-tree portfast

!

interface FastEthernet1/0/10

switchport access vlan 2

spanning-tree portfast

!

interface Vlan1

no ip address

!

interface Vlan2

ip address 192.168.2.1 255.255.255.0

!

interface Vlan3

ip address 10.57.200.1 255.255.255.0

!

interface Vlan4

ip address 10.56.2.1 255.255.255.0

!

interface Vlan5

ip address 10.56.12.1 255.255.255.0

!

interface Vlan6

ip address 10.56.22.1 255.255.255.0

!

router eigrp 100

network 192.168.2.0

network 192.168.253.2 0.0.0.0

network 192.168.254.0

auto-summary

!

ip classless

ip http server

ip http secure-server

!

!

!

control-plane

!

!

line con 0

line vty 0 4

password xxx

login

line vty 5 15

password xxx

login

!

end


Switch#ping 10.57.200.1


Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.57.200.1, timeout is 2 seconds:

.....

Success rate is 0 percent (0/5)

Switch#


Switch#sh ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route


Gateway of last resort is not set


C 192.168.254.0/24 is directly connected, FastEthernet1/0/46

D 192.168.1.0/24 [90/28416] via 192.168.254.2, 00:04:11, FastEthernet1/0/46

192.168.253.0/24 is variably subnetted, 2 subnets, 2 masks

D 192.168.253.0/24 is a summary, 00:04:11, Null0

C 192.168.253.2/32 is directly connected, Loopback1

C 192.168.2.0/24 is directly connected, Vlan2

Switch#

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Loading.
sundar.palaniappan Wed, 07/25/2007 - 11:15
User Badges:
  • Green, 3000 points or more

The route would only show up if the VLAN 3 interface is up. You need to have atleast one active port on vlan 3 or a trunk port in which 3 VLAN is active for the interface to come up. Can you assign one of the active ports to vlan 3 and check the status?


HTH


Sundar

stephen.laroche... Wed, 07/25/2007 - 11:31
User Badges:

That worked for vlan3 int. I've got another Netgear smart switch that needs to see these vlans as well. I've got fa1/0/47 set up like this:


interface FastEthernet1/0/47

switchport mode dynamic desirable


Will that serve as an appropriate trunk to allow the vlans be seen across both switches? Essentially a trunking interface...


Thanks,

Steve

sundar.palaniappan Wed, 07/25/2007 - 11:33
User Badges:
  • Green, 3000 points or more

Try this configuration.


int f1/0/47

switchport trunk encapsulation dot1q

switchport mode trunk


HTH


Sundar

stephen.laroche... Wed, 07/25/2007 - 11:47
User Badges:

The Netgear switch has an IP of 192.168.2.3 which is on Vlan2. After setting the trunk encaps. and the mode, I cannot ping the netgear switch.

sundar.palaniappan Wed, 07/25/2007 - 11:52
User Badges:
  • Green, 3000 points or more

Did you create vlan 2 itself and not the vlan interface in the Netgear?

stephen.laroche... Wed, 07/25/2007 - 12:16
User Badges:

That was it...I had not created the trunking port on the netgear switch. I can ping it now. Thanks for your help!

frosalia Wed, 07/25/2007 - 14:08
User Badges:

stephen,


perform a 'show interface' command. My guess is the vlans you have created are down, since there is no port(s) assigned to the new vlan(s).

Actions

This Discussion