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- About TAYYAB MUNIR
TAYYAB MUNIR
Member since
07-04-2013
Beginner
I’m CCDE #2016::44, 3xCCIE #37259 (SP|DC|Sec), 3xJNCIE (ENT|SEC|DC), PCNSE, VCIX-NV, VCP6.5-DCV, ITILv3 Cisco Certified Internetwork Expert with 10+ years impressive track record. Focusing on customer digital transformation in the networking space, utilizing the modern SDN/NFV technologies to build programmable networks, hybrid clouds and IaaS services.
Personal Web Page : https://www.tayyabmunir.com
02-28-2019
03:15 AM
@Szabo Tomi
You have to go through all the model's datasheet in order to get the interfaces details, Mostly catalyst switches using interface gig and nexus using ethernet.
https://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/datasheet-c78-736651.html
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-20-2019
09:33 PM
02-20-2019
09:33 PM
Exactly as same as @balaji.bandi mentioned!
... View more
02-20-2019
09:30 PM
Hi,
we have replaced c4500 last year with c6800, Now we are planning to replace remaining c4500 with c9500 as c9500 rich of features and long life.
if you have further question regarding c9500 please don't hesitate to ask me. Thanks
BR
Tayyab
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-20-2019
04:39 AM
02-20-2019
04:39 AM
Hi @anuna
here to go
1) Download link for Everest-16.6.5,
https://software.cisco.com/download/home/284846029/type/282046477/release/Everest-16.6.5
Image name: cat3k_caa-universalk9.16.06.05.SPA.bin
2) Download link for Denali-16.3.7
https://software.cisco.com/download/home/284846029/type/282046477/release/Denali-16.3.7
Image name: cat3k_caa-universalk9.16.03.07.SPA.bin
BR
Tayyab
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-20-2019
04:31 AM
02-20-2019
04:31 AM
- Download link for Everest-16.6.5,
https://software.cisco.com/download/home/284846029/type/282046477/release/Everest-16.6.5
Image name : cat3k_caa-universalk9.16.06.05.SPA.bin
- Download link for Denali-16.3.7,
https://software.cisco.com/download/home/284846029/type/282046477/release/Denali-16.3.7
Image name : cat3k_caa-universalk9.16.03.07.SPA.bin
BR
Tayyab
... View more
02-20-2019
04:17 AM
HI Jhon,
This is a bug, in order to fix this error please hard re-seat the module.
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-20-2019
04:12 AM
02-20-2019
04:12 AM
Yes, you can do the workaround to have 10G connection X2-10GB-LR or SR to connect your server with 10G of using SC-LC Fiber optic.
... View more
02-19-2019
11:41 PM
Adding +++
Interface mode
spanning-tree bpduguard enable (Puts port in errdisable upon receiving any bpdu).
Global mode
spanning-tree portfast bpduguard default (It enables bpduguard on ports that have port-fast configuration, puts port in errdisable upon receiving a bpdu).
... View more
02-19-2019
11:38 PM
Hi @chinpohpang851
If i designed the network i would not assume, i would know/find out if it is a host or a switch connected, i would not take a gamble. To that end, i still don't see the use of BPDU on a global level.
Your answers
You would use it in a switching environment where you want
portfast to be enabled to save precious time of hosts coming up
John: Portfast yes and BPDU filter on an interface level yes but not BPDU on a global level.
no BPDU Guard enabled because you don't want ports to be shutdown.
John: I agree.
to protect from switching loops that there is always a chance of (for this reason you don't want to use BPDU filter on the interface level)
John: I would have thought it was the reverse of what you say. If i use BPDU on an interface level there is now way i can cause a loop because Portfast is i will not receive or send BPDU's.
https://learningnetwork.cisco.com/thread/43896
BR
Tayyab
... View more
02-19-2019
11:24 PM
if you leave as it is, it might downgrade the service, However, you have two options,
1) Reload the switch (Workaround not a solution)
or
2) Upgrade the OS.
BR
Tayyab
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-19-2019
11:18 PM
02-19-2019
11:18 PM
Do you have VM machine on the desktop?
... View more
02-19-2019
11:15 PM
Hi Andy,
Please check the available power if you have enough power available and IP PHone is not working, you hit the bug and I would advise you to upgrade to stable release 12.2(55)SE12 or later (58).
show power inline
Module Available Used Remaining (Watts) (Watts) (Watts) ------ --------- -------- --------- 1 420.0 187.9 232.1 2 420.0 364.3 55.7 Interface Admin Oper Power Device Class Max (Watts)
... View more
02-19-2019
11:09 PM
Its known bug so upgrade the IOS.
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd45973/?rfs=iqvred
BR
Tayyab
... View more
Created by
TAYYAB MUNIR
in Switching
in Switching
02-19-2019
10:59 PM
02-19-2019
10:59 PM
@q-le
The error is port transitions to error-disable state due to port security violations, A port security violation occurs when an address learned or configured on one secure interface is seen on another secure interface in the same VLAN.
Port security violation happened due to MAC address is change after replacing the server.
Use dynamic learning for port security, and remove any static MAC address list or sticky learning configuration.
SW1-3750(config-if)#no switchport port-security mac-address sticky
SW1-3750(config-if)#no switchport port-security mac-address H.H.H
!--- H.H.H is the 48 bit MAC addresses configured
Configure port security aging.
The aging time determines the minimum time interval required before the MAC address may appear on a different port.
SW1-3750(config-if)#switchport port-security aging time 1
SW1-3750(config-if)#switchport port-security aging type inactivity
The aging type inactivity ages out the secure addresses on this port only if there is no data traffic from the secure source addresses for the specified time period.
Configure err-disable state recovery from port security violation.
SW1-3750(config)#errdisable recovery cause psecure-violation
https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/77805-troubleshoot-3750.html
If you really wants to upgrade your switch use 12.2(55)SE12 for 3750 (C3750E-UNIVERSALK9-M), and 03.06.08E (cat3k_caa-universalk9) for 3850.
BR
tayyabmunir.com
... View more
02-28-2019 03:15 AM
@Szabo Tomi You have to go through all the model's datasheet in order to
get the interfaces details,...
Created by
TAYYAB MUNIR
in Switching
02-20-2019 09:33 PM
02-20-2019 09:33 PM
Exactly as same as @balaji.bandi mentioned!
02-20-2019 09:30 PM
Hi, we have replaced c4500 last year with c6800, Now we are planning to
replace remaining c4500 with...
Created by
TAYYAB MUNIR
in Switching
02-20-2019 04:39 AM
02-20-2019 04:39 AM
Hi @anuna here to go 1)Download link for Everest-16.6.5,
https://software.cisco.com/download/home/28...
Created by
TAYYAB MUNIR
in Switching
02-20-2019 04:31 AM
02-20-2019 04:31 AM
- Download link for Everest-16.6.5,
https://software.cisco.com/download/home/284846029/type/28204647...
02-20-2019 04:17 AM
HI Jhon, This is a bug, in order to fix this error please hard re-seat
the module.
02-20-2019 04:12 AM
Yes, you can do the workaround to have 10G connection X2-10GB-LR or SR
to connect your server with 1...
02-19-2019 11:41 PM
Adding +++ Interface mode spanning-tree bpduguard enable (Puts port in
errdisable upon receiving any...
02-19-2019 11:38 PM
Hi @chinpohpang851 If i designed the network i would not assume, i would
know/find out if it is a ho...
02-19-2019 11:24 PM
if you leave as it is, it might downgrade the service, However, you have
two options, 1) Reload the ...
Created by
TAYYAB MUNIR
in Switching
02-19-2019 11:18 PM
02-19-2019 11:18 PM
Do you have VM machine on the desktop?
02-19-2019 11:15 PM
Hi Andy, Please check the available power if you have enough power
available and IP PHone is not wor...
02-19-2019 11:09 PM
Its known bug so upgrade the IOS.
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvd45973/?rfs=iqvr...
Created by
TAYYAB MUNIR
in Switching
02-19-2019 10:59 PM
02-19-2019 10:59 PM
@q-le The error is port transitions to error-disable state due to port
security violations, A port s...
Public Statistics
| Date Registered | 07-04-2013 06:26 AM |
| Date Last Visited | 04-19-2019 08:32 AM |
| Total Messages Posted | 140 |
| Total Helpful Votes Received | 419 |
Helpful Votes Given To
| User | Helpful Count |
|---|---|
| 5 | |
| 5 | |
| 10 | |
| 5 |
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Helpful Votes From
