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Polling trunk port 3
- Thread starter chieftan
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VinceWhirlwind
Technical User
What does "polling" mean?
What protocol is it using?
What does the standard for that protocol say about
a) the Byte size of each "polling" packet
b) the number of "polling" packets per second.
Multiply a x b x 8 and that's the bandwidth in bps you're using for this "polling", whatever it is.
What protocol is it using?
What does the standard for that protocol say about
a) the Byte size of each "polling" packet
b) the number of "polling" packets per second.
Multiply a x b x 8 and that's the bandwidth in bps you're using for this "polling", whatever it is.
- Thread starter
- #3
Hi Vince....
Polling - Fiber link flasing Green / Orange
This was a loose connection that was fixed very easily, but an unusual occurence happend at the same time. Could be coincidence. A seperate part of the organisation complained that there WAN connectivity was very slow, but then was okay again.
This is just a normal .1q trunk from a 48 port switch.
Thanks for the info though
Polling - Fiber link flasing Green / Orange
This was a loose connection that was fixed very easily, but an unusual occurence happend at the same time. Could be coincidence. A seperate part of the organisation complained that there WAN connectivity was very slow, but then was okay again.
This is just a normal .1q trunk from a 48 port switch.
Thanks for the info though
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allworxguy
Vendor
Loose connection would take the port out. When it comes back it will go orange while spanning-tree is running. During that time nothing is forwarded.
Marv ccna
Marv ccna
- Thread starter
- #5
Agreed if this were an RJ45 port, disagree with a fiber port. With fiber, if it is not correctly connected (pushed and clicked right in) then it will do exactly what I mentioned. If the fiber connection was no where near all the way in, then also, correct, the port would be down. This is true because a little tap of the cable solved the issue and no problems since. It was just weird that the other part of the organisation complained at exactly the same time...... Problem solved anyway.... although, theory also could say that the module may be a bit faulty.... Thanks anyway guys.... much appreciated...
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VinceWhirlwind
Technical User
Flashing Green AND Orange means traffic is passing AND with errors on the port. If your connection was just very slightly dodgy, then the port is detecting partial frames, probably, and the CRC count on the interface probably went up.
Can you explain why you call this, "polling"? I've never heard that before.
Why would this affect users? Lost frames would cause retransmits, causing increased latency and additional utilisation on some links.
Can you explain why you call this, "polling"? I've never heard that before.
Why would this affect users? Lost frames would cause retransmits, causing increased latency and additional utilisation on some links.
- Thread starter
- #8
Hi Vince,
Agreed with your analogy. "Polling" is just a term that everyone I have worked with use for, what would appear to be, an interface that continually seems to be going up/down.... might be just people I have worked with....
Best way to explain the physical setup is as follows:-
We are utilising a managed service, so therefore, as it is managed, I have NO access to the switches / routers / firewalls so I have to rely on the service providers to give me that information. I am currently managing the complete network seperation of a seperate part of the organisation. So, there are no end users seperate to us utilising the network, but I do not know about the WAN link, I am trying to get that information.
As ADB100 says, I suspect that STP was causing some sort of problem, it was just weird that the other part of the organisation complained of slow internet access at exactly the same time this issue was occuring. As I said, it could be pure coincidence, but was not sure, other than maybe STP whether this port flashing green/orange might be utlising a large percentage of WAN bandwidth. I will probably never know as I do not have access to anything.
Thank you all though for the input, very much appreciated. Star you all now
Agreed with your analogy. "Polling" is just a term that everyone I have worked with use for, what would appear to be, an interface that continually seems to be going up/down.... might be just people I have worked with....
Best way to explain the physical setup is as follows:-
We are utilising a managed service, so therefore, as it is managed, I have NO access to the switches / routers / firewalls so I have to rely on the service providers to give me that information. I am currently managing the complete network seperation of a seperate part of the organisation. So, there are no end users seperate to us utilising the network, but I do not know about the WAN link, I am trying to get that information.
As ADB100 says, I suspect that STP was causing some sort of problem, it was just weird that the other part of the organisation complained of slow internet access at exactly the same time this issue was occuring. As I said, it could be pure coincidence, but was not sure, other than maybe STP whether this port flashing green/orange might be utlising a large percentage of WAN bandwidth. I will probably never know as I do not have access to anything.
Thank you all though for the input, very much appreciated. Star you all now
VinceWhirlwind
Technical User
A port that is going up/down is *flapping*.
That isn't what "polling" means.
"Polling" would generally mean some application (or a protocol high-ish up the stack at least) that's making regular short connections (or even just UDP), for the purpose of agreeing on a role or an action.
That isn't what "polling" means.
"Polling" would generally mean some application (or a protocol high-ish up the stack at least) that's making regular short connections (or even just UDP), for the purpose of agreeing on a role or an action.
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