04-21-2009 11:06 PM
(CE)--Trunk-port-via.wi-max-device--(PE-Switch)--Trunk port--(PE-Router)
In above scenario suppse CE router is unable to create sub-interface so to communicate with PE router I have used
switchport trunk native vlan 834 and it's working
But when I use
encapsulation dot1Q 834 native on router sub-interface it is not working
##########Working config#################
PE-Switch#
interface FastEthernet1/0/5
switchport trunk encapsulation dot1q
switchport trunk native vlan 834
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
PE-Router#
interface GigabitEthernet1/0/1.834
bandwidth 128
encapsulation dot1Q 834
ip vrf forwarding ABC
ip address 172.34.63.69 255.255.255.252
end
PE-Router#ping vrf ABC 172.34.63.70
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.34.63.70, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms
##########Non-Working config#################
PE-Switch#
interface FastEthernet1/0/5
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
PE-Router#
interface GigabitEthernet1/0/1.834
bandwidth 128
encapsulation dot1Q 834 native
ip vrf forwarding ABC
ip address 172.34.63.69 255.255.255.252
end
PE-Router#ping vrf ABC 172.34.63.70
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.34.63.70, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Thanks & Regards
Mahesh
Solved! Go to Solution.
04-22-2009 04:57 PM
Hi,
I'm confused with your configuration because the switchport trunk native vlan 834 command is gone in your non-working configuration.
Also is Fas1/0/5 connected to your CE or PE-Router.
Let's say Fas1/0/5 is connected to your CE and 1/0/6 to your PE-Router. A working configuration should be:
PE-Switch#
interface FastEthernet1/0/5
switchport trunk encapsulation dot1q
switchport trunk native vlan 834
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
!
interface FastEthernet1/0/6
switchport trunk encapsulation dot1q
switchport trunk native vlan 834
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
PE-Router#
interface GigabitEthernet1/0/1.834
bandwidth 128
encapsulation dot1Q 834 native
ip vrf forwarding ABC
ip address 172.34.63.69 255.255.255.252
end
Be sure your native VLAN is consistant on all your trunk or you could have traffic leaking between VLAN 1 (default native VLAN) and VLAN 834
HTH
Laurent.
04-22-2009 04:57 PM
Hi,
I'm confused with your configuration because the switchport trunk native vlan 834 command is gone in your non-working configuration.
Also is Fas1/0/5 connected to your CE or PE-Router.
Let's say Fas1/0/5 is connected to your CE and 1/0/6 to your PE-Router. A working configuration should be:
PE-Switch#
interface FastEthernet1/0/5
switchport trunk encapsulation dot1q
switchport trunk native vlan 834
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
!
interface FastEthernet1/0/6
switchport trunk encapsulation dot1q
switchport trunk native vlan 834
switchport trunk allowed vlan 503,834
switchport mode trunk
speed 100
duplex full
PE-Router#
interface GigabitEthernet1/0/1.834
bandwidth 128
encapsulation dot1Q 834 native
ip vrf forwarding ABC
ip address 172.34.63.69 255.255.255.252
end
Be sure your native VLAN is consistant on all your trunk or you could have traffic leaking between VLAN 1 (default native VLAN) and VLAN 834
HTH
Laurent.
04-23-2009 02:45 AM
OK,
Means this is OK for testing purpose. but we should not give this solution to customer. reason is I will be able to define only one vlan as native vlan on one port
anyway man thanks a lot for your valuable time
--Mahesh
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