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Resolved! MDI/MDI-X Status on Catalyst 3560g

Hi,I'm searching the way to know if a cable plugged in the Gi0/1 is crossover or not.I'm found the command: show controllers ethernet-controller Gi0/1 phy     (witch not really help me in this case) show interfaces transceiver properties             ...

osgpcqosg by • Beginner
  • 3535 Views
  • 6 replies
  • 0 Helpful votes

ARP Cache vs Mac-address-table

Greetings,I am having network connectiviy issues trying to get to a server.  I noticed on the switch that there is an entry for this server in the arp table (show ip arp x.x.x.x) but when I check the mac-address-table, there is no entry related to th...

3750 switch crashes when enabling Dot1x

HiI have a 3750 stack that crashes when I enable dot1x, the switch is running c3750-ipbasek9-mz.122-53.SE I found a bug with this problem with status fixed, bug ID: CSCte54884 but unfortunately there is no workaround, fixed in version or any informat...

Reidar by • Beginner
  • 510 Views
  • 4 replies
  • 0 Helpful votes

cat 6500 issue

Hi all,while trying to upgrade  a cat 6500 image ,a wrong image was inserted  and set to sup boot Now it is going to loop and rom mon mode and the switch is not booting .How do I recover the  the  switch to boot properly.when I do a dir sup I see the...

rajbhatt by • Participant
  • 465 Views
  • 4 replies
  • 0 Helpful votes

A Question About Loop Guard

I'm trying to better understand loop guard. From my understanding, loop guard helps to prevent forwarding loops in the case of unidirectional link failure.Consider 3 switches, A, B, and C. A is root and B and C have root ports connected to A. The por...

Crypto pki cert info in config?

I noticed there is a command located on 1 switch in the network.  I don't recall running this command, where could it originate from?crypto pki certificate chain TP-self-signed-2380499712 certificate self-signed 01 nvram:IOS-Self-Sig#3232.cerThanks

Switch for Server Farm

Does anyone have any suggestions as to which switch to utilize for a small server farm.  Only requirements is that it be Cisco, support twisted pair 10 / 100/ 1000 and have the capability of fiber uplinks.  The twisted pair ports do not need to be mo...

About the GRE Tunnel

Is this a true Cisco statemenet?GRE tunnel encapsulation and deencapsulation for multicast packets are handled by the hardware in PFC3. Each hardware-assisted tunnel must have a unique source. Hardware-assisted tunnels cannot share a source even if t...

nawas by • Enthusiast
  • 538 Views
  • 3 replies
  • 0 Helpful votes

Spanning tree cost question

Hi all,I did a little network diagram and I am hoping somebody can help.http://img.photobucket.com/albums/v652/mypersonalpics/f34b1916.jpgAs you can see from my diagram, I have 2 core devices which are 6509's and then connected directly to SW1 and SW...

Rip vs EIGRP or OSPF

We are currently running rip ver 2 on our Cisco network.  We are discussing moving to EIGRP.  Is that still the recommended routing method & can it be implemented on several routers at a time or does everything have to be switched over at once?  Shou...

chill8888 by • Beginner
  • 5947 Views
  • 4 replies
  • 0 Helpful votes

Need to span more than 2 ports on a 6500

We already have a system that is using a SPAN port, and we're about to implement an IDS with 3 sniffing interfaces. Unfortunately, all network devices are plugged into our two 6500's that are running as VSS, and we need a total of 4 SPAN ports. I'd p...

baskervi by • Beginner
  • 1114 Views
  • 2 replies
  • 0 Helpful votes

Resolved! 3750G T Issue

I have a 2 3750G 24T's that are connected via Stackwise cables that has recently started kicking out some errors and I cant seem to make heads or tails out of them.  Here are the errors:Mar  1 11:05:30: %LINK-3-BADMACREG: Interface StackPort1, non-ex...

jonesl1 by • Beginner
  • 1280 Views
  • 3 replies
  • 0 Helpful votes

Trunking and native vlan

Hey allI am having some trouble getting my head around this concept and I just want someone to explain if they can, before I pull my hair outAssume I have the following config on my switchinterface FastEthernet0/1 switchport access vlan 10 switchport...

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