11-21-2011 01:08 PM - edited 03-04-2019 02:21 PM
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
11-21-2011 02:26 PM
Not familar with HP, but is it configured correctly?
also
encapsulation dot1Q 1 native
can you remove native and try again.
HTH
11-21-2011 02:32 PM
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
11-21-2011 03:00 PM
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
11-21-2011 03:05 PM
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.
11-21-2011 03:22 PM
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..
11-23-2011 01:24 PM
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
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