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DearWe have 3750 series switch.we configured8 to 10 vlan on this switch.We have 71,72,73,...90 vlan.We want to configure our 71 vlan will not talk with another vlan so please tell me how can we configure

upendra07 by Level 1
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  • 1 replies
  • 0 Helpful votes

Get the following message while a 6509 is booting up:- RELIABILITY DRIVER: wrong signature on NVFLASHIt continues to load and becomes operational.However, would obviously like to find out what is causing this message. Its a 6509 720.

net212108 by Level 1
  • 520 Views
  • 1 replies
  • 0 Helpful votes

Looking for some troubleshooting feedback on this one.In a single vtp domain environment containing about 120 switches (mostly Cat 3560s and very few DLink Des3550s) I've recently started to see a few network wide connectivity drops, very short in na...

We are gearing up to implement port security in our environment and we are considering an aging type of inactivity and an aging time of 2 minutes. This is to allow for PC and other equipment changes without requiring manual intervention.Is there an ...

Hi all,i'm in a situation where i have one cat4506 switch with just one 1400W power supply and i must change this 1400W power supply by two 1000W power supply without turn the switch off.Can i have power supply redundancy on the cat 4506 chassi with ...

rafael2gc by Level 1
  • 700 Views
  • 1 replies
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I saw this command posted a few days back and just now got around to trying it. Do you have any idea why I am not seeing any statistics on this switch?SP#sh controllers utilizationPort Receive Utilization Transmit UtilizationGi1/0/1 ...

Hi all. I want to configure a route-map to route traffic to null0. Is this possible somehow? Null0 doesn't seem to be an option with the "set ip next-hop" cmd. Or is there another way of doing this. Background - I want to blackhole any traffic with a...

w.frye by Level 1
  • 1235 Views
  • 1 replies
  • 0 Helpful votes

Hi, I have a LAN behind ASA 5505, interface NAT/PAT is configured. External interface is configured for PPPoE. Everything works fine except I cannot ping from a LAN PC external hosts. I can however ping external hosts from ASA itself. ICMP is allowed...

Hi There,I'm having a problem with the ntp time passed on to a number of routers/switches in the LAN after day light saving started two weeks ago here in sydney.The following is the configuration and the time on the router acting as ntp server,router...

egua5261 by Level 1
  • 1152 Views
  • 4 replies
  • 0 Helpful votes

I have a Cisco 1841 integrated services router with wireless built-in. I am attempting to use SDM to configure the wireless, but when I click the 'Wireless Application' button it says I have to install it on the router first. I am running SDM Version...

cisco by Level 1
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  • 1 replies
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When i redistribute ospf to rip using route-map using ip-prefix, it doesnt work at all. when i use access-list, it works!.This config doesnt workrouter rip version 2 redistribute ospf 1 metric 1 route-map OSPF-RIPip prefix-list OSPF-RIP seq 5 permit ...

We have setup a DHCP server in our network. VLAN A and VLAN B are connected to our 3560 switch. The DHCP server is on VLAN A and the clients attempting to pull an IP are on VLAN B. Within VLAN B I have input the ip helper-address command with the I...

Hi,I want to install another WIC and another T1 line into our 2811 routers so that we can have two T1 lines between our offices. We currently have one T1 line, but we have an application that consumes the bandwidth, so we would like to install a seco...

Is there any downside at all to enabling portfast on an ESX server? Do I have to worry about vSwitch creating loops or any other reason that would cause a loop doing this? It is a end host after all.Thanks,John