Switching

Is there a method of preventing a device with an IP address of 172.25.*.1 (* = any number) from being allowed on the network? The problem I am facing is the end user incorrectly configuring a device and using the .1 gateway address. We run DHCP and h...

Hi There,We have many comms cabinets on campus; I need to order in some new UPS for each to replace old devices. All new switches are 3750?s; all old switches are 3500's.How can I correctly calculate the UPS size for each cabinet? On average we will ...

I have 2 2900xl series switches and currently the both have been spitting errors at me and i just wanted to conferm my suspitions. the errors that i am getting are simaler to this"C2900XL POST FAILURE: front-end post: FastEthernet0/9: ...

I have Cisco 7513 with fastethernet adapter PA-FE-TX connected to Catalyst WS-C2948. And i have permanent frame (and some time input) errors. Errors rate is block of about 22-30 errors each 10 seconds. I have disabled KeepAlive on router but C2948 do...

I have used both, but am embarking on a brand new network running a 4500 series at the core and 3750's in several closets.I am relatively sure I have to run COS as we are wanting to do Dynamic VLAN's.Just wondered if there were any real reasons (besi...

When configuring vlans on the Catalyst 2912XL doing the show ip int brief results in vlan 1 OK? status = NO, Method = manual, status = up and upAll other vlans subsequently configured are all OK? = YES, but are administratively down and NO SHUTDOWN c...

I have two 6506 switches. Each has a FWSM with ver 3.1. Two FWSMs have been configured in Active/Active failover mode. Both firewalls are in transparant mode and each firewall has three contexts.Yesterday night I did a AAA configuration. But I was lo...

Can anybody send me the right configuration to enable a span (mirror)port on a Cisco catalyst 2950 switchthanksMohamed Ibrahim

How to change/replace Radius IP Address on Cisco7613 router?What are the commands on Radius server and SUP etc.?Any steps?Thanks

I have researched upgrading a 3560. I have seen there is a different product that needs to be purchased if the switch is running IP base IOS (SMI) or IP Services IOS (EMI). Can someone confirm if this is the procedure you followed? Please refrain ...

"Port cost comes into picture when closest path to the root bridge has to be decided."If you want to tell spanning tree to use a certain port, what do you change. the port cost or the priority. What does the priority do?What does the port cost do?Man...

I had to repost this as I need help urgently. I need to move the line this weekend.ThanksI need to do the following: Please find attached what I am trying to do. We have a lot of VLANs and yes the 2 x 1GB links are trunk and under the same vtp so hav...

I need to apply access list to an interface Vlan10 saying the We dont want this netork a.a.a.a coming on to our network.SO I have access-list 8 deny a.a.a.a access-list 8 permit any and on the Vlan Interface 10Interface Vlan 10ip access-group 8 outIs...

I'm using a 7606 with sup 720 and policy feature card 3B.This PFC supports a maximum number of 239k CEF table entries. I know that a PFC card upgrade will take me to 1M CEF entries but this may not be an option in the near future and I could be runn...