VLAN with a Cisco 1721 router and HP Procurve 4000M switch

[valleyvet]

I have a Cisco 1721 router and a HP Procurve 4000M switch that I'm using to setup two VLANs.  I have configured the router as shown below and have one port on the Procure 4000m set as a trunk and others tagged for one or both vlans.  My problem is that I cannot ping the router or ping between two machines on the same subnet.  Have I set something wrong or are these two pieces of equipment not capable of VLANs.

version 12.3

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname vlan

!

boot-start-marker

boot-end-marker

!

no logging console

enable secret 5 $1$n8Uj$a3V1.e1IewoOCwFoUYON7/

enable password xyz

!

mmi polling-interval 60

no mmi auto-configure

no mmi pvc

mmi snmp-timeout 180

no aaa new-model

ip subnet-zero

ip cef

!

!

no ftp-server write-enable

!

!

interface FastEthernet0

no ip address

no ip split-horizon

speed auto

full-duplex

!

interface FastEthernet0.1

encapsulation dot1Q 1 native

ip address 172.16.1.1 255.255.255.0

no ip redirects

!

interface FastEthernet0.5

encapsulation dot1Q 5

ip address 172.16.5.1 255.255.255.0

no ip redirects

!

interface FastEthernet0.10

encapsulation dot1Q 10

ip address 172.16.10.1 255.255.255.0

no ip redirects

!

interface Serial0

no ip address

ip broadcast-address 0.0.0.0

shutdown

no cdp enable

!

ip classless

!

no ip http server

!

!

control-plane

!

!

line con 0

line aux 0

line vty 0 4

password xyz

login

!

end

[Reza Sharifi]

Not familar with HP, but is it configured correctly?

also

encapsulation dot1Q 1 native

can you remove native and try again.

HTH

[Peter Paluch]

Hi Jeremy,

Can you post the configuration of the HP ProCurve as well? The router seems to be configured correctly.

Reza: you wrote:

encapsulation dot1Q 1 native
can you remove native and try again.

This will probably not be possible: the native keyword is added automatically to that command. The native keyword would be removed only if a different VLAN was designated as the native VLAN on this tagged routed port.

Best regards,

Peter

[Reza Sharifi]

Hi Peter,

You are correct, when you create sub-interface with dot1.q 1, it will add the native to it.

But you can delete vlan 1 with sub-inter 1 and add a different one.  In that case it does not add the native to any of the other sub-interfaces.

here I have 3 sub-interface with no native:

interface Ethernet1/0.20

encapsulation dot1Q 20

ip address 20.20.20.1 255.255.255.0

no snmp trap link-status

!

interface Ethernet1/0.30

encapsulation dot1Q 30

ip address 30.30.30.1 255.255.255.0

no snmp trap link-status

!

interface Ethernet1/0.40

encapsulation dot1Q 40

ip address 40.40.40.1 255.255.255.0

no snmp trap link-status

HTH

[valleyvet]

You are correct that the native keyword is added automatically.  I have tried it without interface fa0.1, just 5 and 10, but still no luck. 

As far as the procurve config, I don't know of a good way to show the config.  I have tried tagging ports to just 1, 2, and all three VLANS with no change.  I have the option to set the trunk to the following types.

– Trunk (Source Address/Destination Address trunk; the default type if you do not select a type)

– SA-Trunk (Source-Address trunk)

– FEC (Fast EtherChannel

trunk)

I have tried all three options with no luck on any.

[Reza Sharifi]

can you try testing without trunking it?  In this way you just need an IP an the main interface with no sub-interface and configure the HP port as an access port with one vlan..

[valleyvet]

Reza,

I removed the sub interfaces and gave an ip to the main interface and that allows me to see the router thru the HP switch.

Thanks,

Jeremy