Switching

Hi all, I was reading about SFP+ on wikipedia. I have one confusion. What is SFP+ actually ? in cisco is SFP-10G-SR module is SFP+ or the slot in which it will be plugged in is SFP+ ?

Hi all, We want to setup S2S tunnel between cisco 2811 and 2911 router . In 2811 router we do have vpn modules . In 2911 router show version output , we are not seeing the vpn modules.So , in order to support the S2S tunnel , whther it should have vp...

Dears please tell me what is this when i write ( show run ) in the switch !crypto pki certificate chain TP-self-signed-4128971520 certificate self-signed 01  3082024F 308201B8 A0030201 02020101 300D0609 2A864886 F70D0101 04050030   31312F30 2D060355 ...

Hi all,I have a traffic-eng tunnel that isn't coming up. I have 4 traffic-eng tunnels, all pretty much the same (except path options and destination) and three are up:*Tunnel1212                    0        0        0        0        0        0      ...

I need a better understanding about how a blocking ports are chosen in a Cisco switching network.  Let's take the simplest example - three switches connected to each other by links of equal costs.  One of the end-points of the link "opposite" to the ...

I added a new 2960S-switch to my network and made a software update to level 15.2.1E ED.This was the first switch in my network with this level.From that day on about 10 percent of our 400 users had a network problem with their windows PCs.Most of th...

Hi all, i come to command related to mst spanning-tree portfast trunk also i know spanning-tree portfast default i think both has the same effect, just i need someone to confirm and explain the difference, thanks Best regards                   

I have a setup of two L3 switches and one router. Am I missing something very fundamental here, or this is a GNS3 error? Thanks in advance for any help!I can ping from 10.99.99.3 to 10.99.99.1 and visa versa. However, I cannot ping from 10.99.99.3 to...

Hi Everyone,I did testing with one trunking today.Sw1 was set to isl trunking and Sw2 was set to dot1q.Interface used for trunking was fa0/1.So trunk status was up up but i was unable to reach Sw1 from sw2 that was expected as both S1 and S2 were spe...

The switch is not booting. I'm in "switch" modeI've done the following:Pressed the "mode" button until port 1 led is offtyped in flash_inittyped in load_helperdir flash:changed the config.text to config.oldas soon as I type in "boot" i get a message ...