Routing

I am getting input, CRC and Frame errors on my serial interfaces. I have 3 T-1's configured with multilink and connect to MPLS.Attached is an output of the show int.I am working with our carrier but they say they test clean to the CSU on all three T'...

I have a T1 line that has suddenly become unstable. It was repaired by the Telco last week after it went down but over the weekend it has gone up and down several times. I'm fairly new at Cisco and all I can find for troubleshooting is to do a 'sh ...

Hello,I recently upgraded a 2811 to 12.4-15.T1 and since doing that, I receive High CPU usage from a "Show Run" command. This never happend in the past.This router has 512MB DRAM, so I'm hoping there's no shortage along these lines.Attached is the ou...

Hi,I am wondering if there is a bug in the latest cisco firmware for the 871 routersc870-advipservicesk9-mz.124-11.T2 .We noticed a major problem since upgrading from c870-advipservicesk9-mz.124-4.T3, in that it wont allow us to set a qos service po...

dear sir,i have 1750 router in that while booting no memory found it was showing how can i troubleshoot.anybody help mesrini

I have just downloaded a new image to flash via a serial cable on a Cisco 837. The Download completed and then erazed the flash, but the checksum failed. Here is the output:Expected checksum: 3d7a, calculated checksum:814open: file "c837-k9o3y6-mz....

Hi. I had a problematice router will always hit cpu utilisation of 70% - 80%. is it normal for a router with series 3600 to encounter such issues and what is the best recommendated usage of a router cpu threshold? is there any official recommendation...

hi, i am hosting an application server at HO to which clients connect using the client application, using 2 ports.(8090,8092). We were using a DSL connection and eveyrthing was good. Now we bought an E1, terminated it on 2811 using e1 controler card....

Hi. Currently the service provider is going to deliver more than 150 VLANs to a customer using a Metro Ethernet cloud on a Gigabit Ethernet connection. I'm trying to decide which equipment to use at the central site in order to received all those VLA...

Dear SirI have a 878 router but unfortunately i forget its enable password. would please let me know how i can recover its password without any changes to configuraton of the router.best regardsHamed

When configuring OSPF on the CCNA Exam, which reverse mask is required? There is much documentation supporting the specific reverse subnet mask, and the standard classful reverse mask.

Dear CommunityAfter added vlan 634 to CoreSwitch1 (CatOS6509), the ethernet channel ports on CoreSwitch1 were disabled due to errors (pls see the log below).CoreSwitch1>2007 Aug 08 10:29:31 AEST +10:00 %SPANTREE-2-CHNMISCFG: STP loop - channel 5/1-2 ...