Switching

Hi Everyone,I have 05 Layer 3 Cisco 3560 Switches. They are connected to each other by microwave links with each switch hosting one subnet. I am also going to monitor the switches and the links from one of the sites.I am a CCNA but new to layer 3 swi...

I have cisco Cat2948G switch. When I see the logs it shows following error %AAL5-3-RXERR: Flow Hdr: (10) input packet dropped because of CRC errors continuously. Does anyone have an idea what these messages mean?Is the error effects the switch as the...

Dear all.My office have 3 cisco-1720 routers,connected to the WAN backbone by using WIC-1ADSL One ADSL port module.Recently, the WAN backbone has been upgraded to Gigabyte/Fast Ethernet system.So I'm looking for the fast ethernet module for 1720 rout...

I have received a replacement router and have used the default login ID and password. The next prompt indicates your name and attempts to check the network what is this for?

Is the bridge ID simply the MAC of bridge or MAC+Priority calculation for STP calculation.

I am having an issue with dhcp.I am tring to dhcp an address to a linksys router, it seams that the router needs to renew its dhcp lease more ofton then my lease time. Lease time is set to 5 days. The router needs its address renewed several times pe...

Anybody know what is the "A" stands for the PO4A,normally wh should have PO4 only if we look at the port channel 4 setting. For example:vlan mac address type learn age ports------+----------------+--------+-----+----------+-...

Can somebody explain me from technical point of view why are 67 series modules not supported by Sup 32 on the 6500 platform? These modules connect to both shared bus and crossbar, so the lack of the crossbar on the Sup 32 doesn't matter, right?Thx.

What's the EASIEST way to find any security advisories related to IOS version 12.2(18)SXD ? Do I really must digg all the http://www.cisco.com/go/psirt page ?

Hi!I would like to double transfer speed between a Cat4000 and Cat2948 switchesusing two GBIC ports.The port capabilities show thatthese ports cannot be etherchanneled together, but a Cisco presales engineer told me it should be possible and I should...

how do I remove the following command on a WS-x4013? I want to remove the "native" vlan.set vlan 60 1/2

I am connecting a 4507 with redundant SupII+10GE cards to a 6509 with redundant sup32with 10GBE. I have 2 fiber runs between the switches. I plan to plug one fiber run into the top 2 sups and the second into the bottom 2 sups. If the sups are configu...

Please help, I have to switch 6509, need to install module WS-X6148A-GE-TX=. I have found the image CATOS 8.4(1), my questions is, some image IOS exists that it support this module?? Thanks