Switching

The cisco router we are using sends TCP syn packets with incorrect checksum. The error occurs when the packet is both SNATed and DNATed on the router. Has someone seen this before? Is there an option to force checksum recalculation?The problem is tha...

Could someone please confirm if the IOS release 12.25SE which supports 48 etherchannels instead of the legacy 12 on earlier versions is supported on non-enhanced 3750 switches? Thanks

hi all I have cisco 4506 switch with WS-X4306-GB 1000BaseX module and GBIC WS-G5486.can any one tell me is it supported to my Cisco Catalyst 2960G-48TC-L switch having 1000BASE-LX fiber port with SFP GLC-LH-SM( 1000BASE-LX/LH).Also is it supported ...

I have an AS 540 with four routers Frances is connected to Meg; Meg to Peter, Peter to Lois.Lois also participates in AS 790 which runs OSPF. Lois's OSPF neighbors are Carter and Chris.In Lois's OSPF process, I entered "redistribute eigrp 540."Then I...

Good day, I would apreciate it if somebody would like to help me set up our new router. The ISP is not very helpful. I got it connected to the net with some functionalty but I can not send mail througt the router it is tellingme something like Rela...

Every device connected to a network is a node. Wikipedia says that every host is a node. And that every host is a computer on a network.I want to know if a network printer is also a host, or just a node? And while on this subject, can it still be cal...

Hi;I configured a timeout in the 6506 for "Connections" of "24:00:00".Is the only one configured.I connect a machine from the outside to the inside and it doesn't close the connection (know stablisehd for 4 days).But if I dissable the "connection" ti...

I have one lan connect using a Linksys wireless nat router, i also have a testing/learning network with 5 pc's, Cisco 3550 switch and 2600 router with 2 ethernet interfaces. Lan A (Linksys wireless) 192.168.1.0 | Lan B (testing/learning) 192.168.2.0....

Hi All,When switch gets on, it's doesn't have any information in MAC-table. When one PC in that switch transfer any data to other PC in the same switch, it will broadcast that Frame to all ports in that switch. Normally Frame has a field of "Destinat...

Hi;I did a "show process events" in a 6506 and it reload-restarted...The crash ifo has the line: "Address Error (load or instruction fetch) exception, CPU signal 10, PC = 0x4047DB2C"Is this normal?The command "show process events" uses so much resour...

I am trying to accomplish a private VLAN solution on a 3750 switch, but I am running into a bit of trouble. I am using the 3750 as a layer 2 switch only. I have a trunk connection from g1/0/1 to a VMWare server that is passing me VLANs 800-809. I ...

Hi,I am getting this error messages a couple a day: %EARL_L3_ASIC-SP-3-INTR_WARN: EARL L3 ASIC: Non-fatal interrupt Packet Parser block interruptI have read that this shouldn't be a problem as I get one or two errors, but what if I have it around 5 o...

I have a 2950 switch. As I found I can create lots of vlans, but only one can be up. Why? What is the benefit of this? (When I create more than one others are in state "administratively down".)

Hello.I have a problem with NAT configuration. It is somewhat similar to 'NAT-on-a-stick' situation, with NATing on a loopback interface.I have a simple network with 2 hosts connected to 2 Fastethernet ports of a router, and one loopback interface on...