Oleg Oz wrote:
The originally ethernet
chips used in cisco network modules only supported a fixed
frame size. When ISL/802.1Q came along, the hardware needed to
support some additional space to accomadate the VLAN info.
I could see this as being an explanation. But doesn't Dot1Q fit into a
Mike, yes the IEEE802.1Q does insert the VLAN tag into the frame (ISL
encapsulates the frame.) I am going to try and get this part right. The max
frame size for an ethernet frame is 1518, however if you are going to insert
the 801.1Q Vlan tag you would require an additional 4 bytes.
2
At 09:38 AM 2/14/02, Michael Williams wrote:
Oleg Oz wrote:
The originally ethernet
chips used in cisco network modules only supported a fixed
frame size. When ISL/802.1Q came along, the hardware needed to
support some additional space to accomadate the VLAN info.
I could see this as
Great answer. One minor thing. ISL came first. It was designed by Kalpana
years ago. Cisco bought Kalpana in the mid-1990s.
Priscilla
At 10:53 AM 2/14/02, Oleg Oz wrote:
Mike, yes the IEEE802.1Q does insert the VLAN tag into the frame (ISL
encapsulates the frame.) I am going to try and get
In the book that I read it says that you can only use fast ethernet or gig
ethernet
-Original Message-
From: Colin [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 12, 2002 8:20 PM
To: [EMAIL PROTECTED]
Subject: Ethernet or FastEthernet [7:35245]
Hello
I have been doing some reading
Hi Colin,
I have configured a port on a 2900 for 10Mbit and half duplex, and it lets
me issue the command 'switchport trunk encapsulation isl' without any
problems. On CatOS switches, you can issue the command 'show port
capabilities', which will tell you the capabilities of each port.
Regards,
or FastEthernet [7:35245]
Hello
I have been doing some reading on VLANs and Trunking and have read
conflicting information. Can you use a 10Mbs Ethernet interface when
running ISL or 801.1q or does the interface have to be FastEthernet?
Some books/articles I've read say you must use at least
I had read (and understood) that you needed FastEthernet for ISL trunking.
I'm not for sure about Dot1Q though. It appears from the post from MADMAN,
that you can indeed perform Dot1Q on Ethernet ports. But I still think
FastEthernet
I read a post in this thread that on a 2900 switch someone
I also belive that it is possible to run isl/802.1Q over ethernet. I
seem to remember reading that the limiting factor was the age of the
ethernet hardware. The originally ethernet chips used in cisco network
modules only supported a fixed frame size. When ISL/802.1Q came along, the
hardware
Hello
I have been doing some reading on VLANs and Trunking and have read
conflicting information. Can you use a 10Mbs Ethernet interface when
running ISL or 801.1q or does the interface have to be FastEthernet?
Some books/articles I've read say you must use at least a FastEthernet
interface
ISL requires Fast ethernet.
J
-Original Message-
From: Colin [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 12, 2002 8:20 PM
To: [EMAIL PROTECTED]
Subject: Ethernet or FastEthernet [7:35245]
Hello
I have been doing some reading on VLANs and Trunking and have read
conflicting
a 2610 or 11 can do it over eth.
Colin wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Hello
I have been doing some reading on VLANs and Trunking and have read
conflicting information. Can you use a 10Mbs Ethernet interface when
running ISL or 801.1q or does the interface have
Even if Enet is available, it is not recomenned on Enet.
Depends on the traffic you have on the trunk.
Colin wrote:
Hello
I have been doing some reading on VLANs and Trunking and have read
conflicting information. Can you use a 10Mbs Ethernet interface when
running ISL or 801.1q or does
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