From: William Chen (kwchen@netvigator.com)
Date: Thu Nov 13 2003 - 20:59:22 GMT-3
Hi George,
ISL is only supported on FastEthernet/GigabitEthernet, but IEEE 802.1Q
is also supported on Ethernet
Best Regards,
William Chen
----- Original Message -----
From: "George He" <georgeh@adstream.com.au>
To: "Bob Sinclair" <bsin@cox.net>; "William Chen" <kwchen@netvigator.com>
Cc: <ccielab@groupstudy.com>
Sent: Friday, November 14, 2003 6:52 AM
Subject: RE: dot1q natvie vlan
> Hi William,
>
> From memory that Ethernet doesn't support "router on a stick," only Fast
> Ethernet or Gigabyte Ethernet support it. but as Bob's mail, it seems
> that Ethernet support it. I'm confused. Can anyone give a suggestion?
>
>
> Regards
>
> George
>
> -----Original Message-----
> From: Bob Sinclair [mailto:bsin@cox.net]
> Sent: Friday, November 14, 2003 3:49 AM
> To: William Chen
> Cc: ccielab@groupstudy.com
> Subject: Re: dot1q natvie vlan
>
> William,
>
> I got the same result as you when I tried this using:
>
> 3620 with an Ethernet interface and IOS 12.2(4)T3
>
> and
>
> 3550 running 12.1(19)EA1
>
> A debug on the 3620 showed encapsulation failure.
>
> In order to get this to work, I had to get rid of the E1/0.10
> subinterface
> and configure the 192.168.10.1 address directly on E1/0, as shown below:
>
> interface Ethernet1/0
> ip address 192.168.10.1 255.255.255.0
> !
> interface Ethernet1/0.20
> encapsulation dot1Q 20
> ip address 192.168.20.1 255.255.255.0
>
> The configuration above worked.
>
> All the documents say that your config should work, but there is a note
> on
> CCO that says that the native vlan IP needs to be configured on the
> major
> interface in some. older, IOS versions.
>
> for example:
> http://www.cisco.com/en/US/products/hw/switches/ps663/products_configura
> tion_example09186a008014859e.shtml
>
>
>
>
> -Bob Sinclair
> CCIE #10427, CISSP, MCSE
> bsin@cox.net
>
> ----- Original Message -----
> From: "William Chen" <kwchen@netvigator.com>
> To: <ccielab@groupstudy.com>
> Sent: Thursday, November 13, 2003 5:05 AM
> Subject: dot1q natvie vlan
>
>
> > Dear all,
> >
> > I try to setup the router to use a native VLAN. Following is the
> setting:
> >
> > RouterA:
> > interface Ethernet0/0.10
> > encapsulation dot1Q 10 native
> > ip address 192.168.10.1 255.255.255.0
> > !
> > interface Ethernet0/0.20
> > encapsulation dot1Q 20
> > ip address 192.168.20.1 255.255.255.0
> > !
> >
> > SwitchA:
> > interface FastEthernet0/1
> > switchport trunk encapsulation dot1q
> > switchport trunk native vlan 10
> > switchport mode trunk
> > no ip address
> > end
> > interface Vlan10
> > ip address 192.168.10.20 255.255.255.0
> > end
> > interface Vlan20
> > ip address 192.168.20.20 255.255.255.0
> > end
> >
> > Then I run the following test:
> > SwitchA#p 192.168.10.1
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 192.168.10.1, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > SwitchA#p 192.168.20.1
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
> >
> > Anything I am wrong?
> >
> > Best Regard,
> > William Chen
> >
> >
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