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Forum Posts
Resolved! 3750 IOS Upgrade Help
Hi,I have a WS-C3750G-24T-E that is currently running the following version of IOS which I believe is an EMI image; c3750-i5-mz.121-19.EA1d.Now, I would like to upgrade this to gain some of the additional features, especially around port security, bu...
Does CE 500 started support for VTP client/server mode? if yes, which firmware version?Thanks in Advance.
Hi everyone,I have the question about the effectiveness of regular rebooting of Catalyst 6500.I personally think that regular rebooting will take effect of cleaning up fragmented memory which might be caused memory leak problem.However regular reboo...
Hi,Is there anyway implementing stateful NAT on a 6500. I have 2 6500's with multiple HSRP instances but need to deploy destination NAT as well. Any pointers would be great.Cheers
May I know how to copy all the configuration setting from old router to new router?
Resolved! max ethernet frame size
hi every body!I read in cisco book that maximum size for ethernet frame is 1518 byte.My question is why? it should be larger than 1518 because:(assuming mtu=1500)ethernet(dix)header=26 byte.IEEE ethernet(802.3) header= upto 28 bytesIEEE 802.3 with sn...
I was recently trying to do some debugs and did not get any output until I turned off CEF with "no ip cef". What are the ramifications of turning off CEF? I assume there are some performance issues but are there any IOS features that require CEF? ...
Just installed a 6509e and a 3560 switch in my LAN. Singlemode fiber is connecting the 2 switches using gbics. When moving data between the switches, transfer speeds get no higher than around 50mbps. Doing a sh int gig 5/1 produces the following. ...
Resolved! dynamic trunking protocol
hi every body!i have some questions about DTP.According to cisco, DTP covers encapsulation negotiation( isl or dot1q)and whether the link becomes a trunk at all.Let say we have two swithes: sw1 and sw2sw1 is connected to sw2 by f0/1 and sw2 is connec...
Hi There;Has anyone connected an RS-422 interface with a Mil-STD-188/114 interface. Wikipedia (http://en.wikipedia.org/wiki/EIA-422 - 6th paragraph) and the Mil Std website (http://milstd.net/mil-std-188.htm) says that these two interfaces can inter...
I have a Cat3750 using 802.1x Multidomain Authentication (MDA) on the access ports. Which are Avaya Phones authenticating into the voice domain and cascaded PCs authenticating into the data domain on the same access port. So far everything works perf...
I have c3508G switches connecting several clusters of 2950T switches. the 3508s are hard set at 1000 meg speed. we are constanting building discard errors and performance stinks. this is happening at several sites throughout our network.
Resolved! Automating an interface shut down
I have a situation where I need to automate a vlan interface shutdown when an ip sla becomes true. Does anyone know of a procedure to do this?
Guys, this in the LAN:client-->6509-->4507-->ServerI already checked switch port duplex and speed ports. Server NIC is set to '1000Mbps auto'. All connections are gig. I perform an application test (9MB of data transferred) and I see 700 packets retr...
Resolved! ACL help
Im trying to prevent telnet access into my core switch from a guest vlan, and for the most part everything is working well. I have one issue though, and that is that I can telnet to the device from the guest vlan, and I dont want that to happen. Ca...
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