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       I have a 3750 that when a client computer shuts down the switch will not discover it on start-up unless I bounce the switch.  Pretty dependable product so,.... did I miss something in my config?  Switch is GBIC'd for FiberHelp please.         ...

Resolved! pagp,dtp and vlan1

Hi everybodyBy default native vlan on 802.1q trunk is vlan 1. Protocols such as DTP,PagP use vlan1 by default.   If we change native vlan 1 on a dot1q trunk to say vlan 4, does it mean DTP and Pagp now use vlan 4 not vlan 1?thanks and have a great da...

sarahr202 by Level 5
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  • 3 replies
  • 0 Helpful votes

Hi allI have a question for you good people..... We are currently in the process of migrating floors in a large building onto a new network infrastructure. So currently we have two LAN/WAN cores - the legacy and the new, with the legacy to be decommi...

Hi All,I would like to know about the usage of the command "neighbor allowas-in". We using the command on CE for the neighbour to PE.What does this command do the prefixes learned from PE?What is the reason to use this command ?Regards,Thiyagu

I need to source syslog from a loopback that is assigned to a VRF. I'm running into an issue;RTR(config)# logging source-interface loopback0 Interface Loopback0 is not in the global tableThe loopback is assigned to the VRF as well as the interface th...

Hello there, was hoping for some recommendations for product selection and overall infrastructure setup for our datacenter:  We have an old, legacy setup, and are looking to replace equipment, improve performance, enhance security, and implement hard...

We currently have a Cisco 1841 router with version 12.4(1c) of IOS using image c1841-ipbase-mz.124-1c.bin.  Our goal is to make it so our router can fully support IPv6. The current IOS version cannot. I've seen a site that seems to indicate 12.4T doe...

sammycbmi by Level 1
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  • 3 replies
  • 0 Helpful votes

Resolved! Qos issue

Hi Guys,I am facing severe issue with LAN Qos. There two C3750 switches at different locations with a 1 GBPS TRUNK from telco. This trunk carries customer Layer 2 traffic ( VLAN's including management traffic, data - voice traffic, BGP between the tw...

hi all,the cisco router is giving me high cpu utilization in ip nat agerhere is my system details and logsPLEASE PROVIDE ME SOME SOLUTION I UPGRADED TO LATEST ALSO NO USE.Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.2(3)T, REL...

zeuscyril by Level 4
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  • 3 replies
  • 0 Helpful votes

Hi all,I was upgrading IOS on 4507 R with dual supervisior.I download the IOS on Active supervisior and did reboot.After reboot i login to switch then i got switch standby prompt.I found that after reboot active supervisior  became standby supervisio...

mahesh18 by Level 6
  • 2136 Views
  • 3 replies
  • 0 Helpful votes

Hello,I've just completed a port security project at a site on numerous Cisco switches and all works well, however they have 2 Nortel 5520 switches (which I left until the end) which they would like to lock down.  I have logged a message on the Norte...

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