Finding accurate answers to your questions and issues is always gratifying, but what if these answers are shared globally across different languages? The Cisco Community team has been working on a proof of concept (PoC) to take Accepted Solutions in...
I have a VPN appliance external network interface connected to a 10/100Mbs hub. I noticed performance issues and that the VPN appliance logs demonstrate transmission error in the interface connected to the hub.By default, the interface is set to 'aut...
If you can figure out this you are indeed among the elite of troubleshooting. We have a remote site connected to our main site over a Full T-1 connection. We also have a backup DSL connection from this remote site to the main site connected using DMV...
We are trying to determine our QoS strategy. Most of our WAN links are higher speed MPLS links, but there are a few slower F/R links.I think there would be benefits to using CB WFQ on the F/R links, but is there a benefit to using it on the higher sp...
The other day I found links of vendors stating that a certain hub model could deliver half-duplex configuration.Is that just a wrong name for a hub? If a "hub" can do half-duplex, that is a technically a switch. Is that conclusion right?
Dear guysi have a wireless link between my routershere is the topology :SERVER -- Router --- Wireless <---->Wireless ---- router --- clientsby the way my wireless link is 36 Mbps but sometimes suddenly it decrease to 6 Mbps on my client side i have t...
Hi All, Please have a look at the attachment before you start reading the requirement.Setup:------1. We have two sites LAN-1 & LAN-2 both connecting to two different ISP's 1 & 2.2. Both the Sites are inter linked using STM-1.3. Both the Sites has go...
i have two routers sitting on the same LAN. the first router provides the interface with ISP and PAT for outgoing traffic - router two has the static NAT entries for our www servers. Since both routers have routes to the www servers (10.10.10.x)how d...
I ran across this while studying for the BCMSN:"Any untagged frames that an 802.1Q trunk receives will be forwarded to any ports in the native VLAN, which could be a security issue. This issue can be avoided by assigning an unused VLAN number to the ...
Hello, I'm trying to do the following, but can't find the way. I have to configure a 1721 with one Serial and two ethernets. Serial0 receive internet trafic AND WAN trafic. One ethernet is connected to "internal" LAN and the other to the "unsecure" L...
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....
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