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Show interface "lost carrier" counter

I see that my "lost carrier" counter is not at 0.  I've looked up the potential issues as to why this counter would go up (i.e. bad cable).  I'm curious to know what exactly this means on a technical detail level.  Also, what are the symtomps when th...

meenny123 by Beginner
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Maximum VLANs on trunk Port

Hi,Could you please let me know how many VLANs can be added on trunk port on cisco switches (Maximum VLANs that can be allowed on trunk ports of a cisco switches)??.Thanks & Regards,Ahmed Umair                  

ahmedumair by Beginner
  • 2423 Views
  • 6 replies
  • 0 Helpful votes

Cisco AP1142N Radius Issue

Greetings,I currenly have a cisco AP1142N configured to work with our radius server (It was already configured when I took over the network). I order two additional access points for building coverage on multiple floors. Currently, I uploaded the con...

Total Output Drops on Port-Channel

What are the reasons why a port-channel interface would experience output drops? There doesn't appear to be any saturation whatsoever. I have to 1 Gbps trunks etherchanneled and my network monitoring tells me that there isn't an overly large amount o...

route problem?

Hi,I have attached a rough network diagram of our scenario.Existing:-A 3750 is connected to an unmanaged switch. to this unmanaged switch, there is a 3845 router and a netscreen firewall connected. The 3750 is doing eigrp as is the 3845.3750 has serv...

suthomas1 by Frequent Contributor
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  • 25 replies
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Resolved! 4500 can't find a boot file

Hi All,I have a 4503-E on my work bench.  It's been out of production for a year or so.  I started working on it last week.  I think I may have cause a boot up problem.  It comes up to ROMMON, but then I need to type "boot" to get it to come up all t...

SW VLAN Reachability

Strange issue...* Topology: 3560 <-access-mode-link-> ASA5510 - Internet* 3560 has 3 VLANs and 3 corresponding SVIs (default-gateways for VLANs)* Just configured RAS VPN on ASA5510 and successfully made connectionNow, from RAS VPN (IPSEC) client work...

by Not applicable
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  • 2 replies
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Port QoS is enabled

Hi,A small question for cisco experts, but not totaly clear for me.When I type the following commandCatalyst4507#sh qos int gigabitEthernet 4/23QoS is disabled globallyPort QoS is enabledAdministrative Port Trust State: 'untrusted'Operational Port Tr...

ARP alerting tool

I thought it would be easy to find a tool that would monitor my Windows DHCP server database and alert on leases to new MAC addresses.  I'm finding that not so easy.  As I thought about it, I thought it might be better to focus on reading the ARP tab...

Conflict between two VLANs

Hi,We have a strange problem here....let me give you some background of my setup.We have Cisco 3560X L3 swtich with 2 VLANs configured as mentioned below VLAN1 - Server VLAN (192.168.0.1/255.255.254.0) (Swtich Port - Gi0/2 to 0/10)VLAN2 - User VLAN (...

sagarshaha by Beginner
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  • 18 replies
  • 0 Helpful votes