About jonathan1uk

jonathan1uk · 06-01-2006

From reading various text on the Cisco web site I was of the understanding that the Line Protocol State for an Ethernet Interface was related to the presence of keepalive frames - an example extract is below.However by observation the Line Protocol S...

jonathan1uk · 06-02-2006

Kevin,That is a very good point, I note that when using port mirroring keepalives are not sent [originated by the mirror], my Lap-Top is connected and the Line Protocol State is DOWN.I'll let you know what happens when errored frames as sent into a n...

jonathan1uk · 06-02-2006

Carl,Paths through a network all relate back to the Message Priority Vetor [Bytes 6 - 27 of the actual BPDU, so starting with the 23rd bytes of the ethernet frame].The Root Path cost [Bytes 14 to 17 of the actual BPDU] shows the "rolled-up" cost bac...

jonathan1uk · 06-01-2006

sean/gpulos,Thankyou for your comments, things still do not quite stack up with respect to the keepalives.As I said if I connect a D-Link switch [or a Lap-Top etc] to a 3550 in this case no keepalives are being sent to the 3550. In fact the Lap-Top ...

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Ethernet Interface: Line Protocol Up - but what does it mean.

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Re: Ethernet Interface: Line Protocol Up - but what does it mean