Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
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Forum Posts
Resolved! Nagging Question About TCP & UDP Ports
All,I have always had a question about the transport layer protocols TCP and UDP. How is it that a port number can use both transport protocols? For instance DNS is on port 53 but it uses UDP/TCP how is this possible? This question has nagged me fore...
Hi AllI have a Cat 4503 running CatOS. I have just checked the website and know that supervisor card WS-X4013 is now EoL for Cat 4000. Is it EoL also for Cat 4503?1 1 2 1000BaseX Supervisor WS-X4013 no ok2 2 48 10/10...
Resolved! newbie networking question?
Hey Guys,Well i'm stumped. After turning on debugging, running wireshark, i'm lost at why this is happening. Basic setup, just must not be seeing something.Here is my small home network running cisco devices (trying to practice for my ccna)1) Cisco...
Resolved! DHCP: binding IP to MAC
Hi,We have configured DHCP on 4500 series swicthes. We need to configure the mac address binding to a particular IP address. That means a particular MAC will get a same IP address which will be confugured in switch. Can it be done. ?Thanks in advance...
we have 3560 L3 switch & several 3500 L2 switches.But i want to disable inter vlan communication while maintaining the communication with 3560 and my router also.
I am trying to copy and paste a banner from another router into a new one i am configuring and i am having trouble. Here is an example....router#(config)banner login Ci paste the info in from the other config and I get a bunch of invalid errors.-----...
We are trying to decide the IOS for 6500 Sup720-MSFC3 and base on the safe harbor it shows 12.2.18-SXF8 and when I try to download the IOS the CCO has software advisory on SXF8 and refers to SXF10 but SXF10 again refer to SXF11 and SXF11 push to SXF1...
Resolved! PoE card in Cat 6509
We have a 6509 - Catalyst 6000 supervisor 2, WS-X6K-SUP2-2GE HW 4.2 FW 7.1(1) SW 12.1(19)E1a IOS and a standby supervisor card, 381K bytes of non-volatile configuration memory.32768K bytes of Flash internal SIMM (Sector size 512K). Standby has 112640...
Hi,I have one Catalyst 6509 with 2 SUP1. When execute "show bootvar", the two supervisor engine have different parameter. Even I change "boot system" & "config-register" again, the boot parameter between two supervisor engine still different. Please ...
Everyone said router need a straight-through cable to connect to switch. Why?I can't see any spec like that on the standard. Is it a habit?
Hello,I am looking for a couple of MultiLayer Switches, probably the WS-C3750G-48TS. I am trying to find performance figures and am unable to find much from the cisco site. In particular, I am looking for "Layer3 Forwarding performance". At the mome...
Guru's, i encountered a very, very strange problem and i am looking for an explanation.My customer is using a 2940 uplinked via fiber to a 3750 stack. Clients are connected to the 2940 with 100 Mb/F, and a server is connected to the 3750 on 1000base...
Hello,We have a cisco 1721 having one "FastEthernet 0" and one "Eth 0" interfaces; connecting a DSL line to our internal LAN.FastEthernet 0 interface is connected to the DSL line via ADSL modem (Zyxel) which is configured as bridge mode.Eth 0 is conn...
Hi allI know ip sec is a encryption protocol used for vpn. but what tunneling method does it use ? ie you can have lt2p over ipsec, l2tp is the tunneling protocol. with a normal ipsec tunnel, what creates the tunnel ? or is there not a tunnel, just e...
I want to make a limit for a client upload bandwith rate in switch or router. Is it possible? Or can I make it on the switch port ?
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