07-22-2013 12:59 PM - edited 03-07-2019 02:31 PM
ok, so i have my router and made subinterfaces
int e0/0
no ip address
no shutdown
int e0/0.1
encapsulation dot1q 1
ip address 10.10.10.17 255.255.255.240
and i set my switch up with this
config t
int vlan 1
ip address 10.10.10.18 255.255.255.240
no shut
made the 1st port a trunk
int fa0/1
switchport mode trunk
then made my 2nd port like the access
int fa0/2
switchport mode access
switchport access vlan 1
switchport port-security mac-address sticky
switchport port-security maximum 1
switchport port-security violation shutdown
ready for the question? i can ping my computer of 10.10.10.19, but why cant i ping my default gateway of 10.10.10.17.
im not sure but is it because the router is ethernet and switch is fast. does the router not support vlan(sub-int).
it let me set-up the sub-interfaces for vlan 1, but maybe the port does not support it, 2600 router and 2950 switch.
thanks,
chris
Solved! Go to Solution.
07-22-2013 04:50 PM
Hi,
Could you try:
- shut/no shut the ports on both devices
- issue clear ip arp
- use another VLAN
- check PC TCP/IP setting and personal FW
Sent from Cisco Technical Support iPhone App
07-22-2013 02:13 PM
Hi,
just add the keyword native at the end of your encapsulation command on the router subinterface and let us know if it works.
Regards
Alain
Don't forget to rate helpful posts.
07-22-2013 04:35 PM
no that did not seem to help
any other ideas, did i miss anything while setting up?
07-22-2013 04:50 PM
Hi,
Could you try:
- shut/no shut the ports on both devices
- issue clear ip arp
- use another VLAN
- check PC TCP/IP setting and personal FW
Sent from Cisco Technical Support iPhone App
07-22-2013 05:26 PM
eureka, ima genious.........
i wish, lol
thanks floyd, i made a vlan 2 and it let me ping and telnet to the router. it would not let me in the administrative vlan 1 for some reason. if you know why ill wait for an explianation.
ill mark you as the best answer, thanks
07-22-2013 07:25 PM
hi chris,
i'm glad your issue is resovled. your setup should work flawlessly but i suspect it might be due to the fact your running "legacy" equipment (i.e ethernet on 2600) and doesn't support native VLAN (VLAN 1).
best practice is that VLAN 1 should not be used for anything.
07-22-2013 07:38 PM
thanks im studying for my ccna, legacy is all i have for now. thaks for your reply
07-22-2013 07:38 PM
Chris, John,
You may be interested to know that the 2610 and 2611 series routers with Ethernet (i.e. 10Mbps) interfaces do not support configuring a subinterface for the native VLAN. This appears to be a limitation of the Ethernet controller in these routers. If you want to use the native VLAN, you must configure the physical interface directly. Subinterfaces for all other VLANs work just fine but instead of configuring a subinterface for the native VLAN, configure the Ethernet0/0 interface directly instead.
FastEthernet-based routers like 2620, 2621, the 2600XM series etc. do not have this limitation anymore.
Best regards,
Peter
07-22-2013 07:59 PM
hi peter,
this is a cool fact! thanks for educating us. +5 sir!
07-22-2013 08:09 PM
Hi John,
It is a pleasure and an honor. Thank you!
Best regards,
Peter
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