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Results tagged with cisco
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user 209
The major provider of networking equipment. This is a generic tag to be used when no more specific tags are available. See the list of tags in Help Center Tag page.
9
votes
1
answer
11k
views
Troubleshoot output drops cisco 3750x
Investigating output drops on a 3750x stack..
Two interfaces that connects to a file server (broadcom teamed interfaces) shows some output drops when i transfer large files. The utilization of the p …
- 894
2
votes
1
answer
4k
views
Find negotiated speed on Cisco router
I'm trying to find the physical interface speed that is negotiated on a Gigabit interface on a Cisco 2900 and 3900 series ISR G2. …
- 894
3
votes
2
answers
8k
views
portchannel cant bundle flow control mismatch
I replaced a stack member (2 members in a stack of Cisco 3750x). Both switches have a 10Gb card and I had a perfectly working LAG/etherchannel between to 10Gb ports. …
- 894
9
votes
1
answer
2k
views
Globally disable QoS on Cisco 3750 in production
I suspect some issues with faulty QoS settings on a 3750 stack running in a 24x7 environment. The 3750 mainly routes between vlans on a lan segment. Since it is a lan device (not terminating any wan l …
- 894
5
votes
How can I see which switchports are not in use?
I always use
show interfaces status
It sums it al up nice and dandy.
- 894
12
votes
2
answers
8k
views
Tracing TCN Messages in STP
We have about 20 vlans on a L2 network running Rapid PVST+ where the root bridge is a stack of Cisco's 3750 switches. I am a bit puzzled by the number of TCN notifications I receive on the switch..
…
- 894
2
votes
1
answer
5k
views
QoS bandwith calculation
Please explain:
I have two routers with QoS on them.. Both WAN-facing interfaces have a bandwidth command with the same value (100000) but the priority queue (also the other reservations) calculates …
- 894
13
votes
3
answers
38k
views
Mac-flap due to roaming clients on wireless
We are running an Aerohove wireless network (controller-less).. I occasionally get mac-flaps within the VLAN tied to a SSID. I know this is coming from a roaming client.. The problem is that the compa …
- 894
3
votes
1
answer
1k
views
All switching on cisco 3750 done by cpu
A little confused.. When trouble shooting excessive output drops on a 3750 i noticed that al switching is done by cpu instead of "route cache". This 3750 has no ip routing enabled and no ip cef (ip ce …
- 894
13
votes
Accepted
Locate a host on Network
Take a look at Layer2 traceroute (for cisco).. Cdp should be running btw... …
- 894