Switching

We have one Cisco SG300 swicth with firware 1.2.7.76 and boot version 1.1.0.6. We try to upgarde the boot version from 1.1.0.6 to 1.3.7.18.  But We get Copy: illegal software format. What could be the problem?

1921 router doesn't ship with rack mount kit.How would cisco sugest mount this in the rack?

Why does the cpu utilization differ from adding up all the processes for that time frame. Example below, for 5 minutes it says 52% but if you all up all the processes, it's less then 10%. Where is the other utilization coming from??? PU utilization f...

Hi,     I have configured a LACP etherchannel with 4 members (2 of this members are in a WS-SUP720-3B module and the other 2 members are in a WS-X6724-SFP module... the 4 ports are configured the same but the port-channel comes up like this: one pair...

Hello,I am seeing some conflicting information regarding the ip dhcp relay address command as it is implemented in the latest version (or any version for that matter) of the NX-OS.  I am wondering what the maximum number of relays per interface is.  ...

Hi all ,I have  very strange issue. One of my 3560-X switches does not receive CDP / STP / VTP advertisements.I have noticed this issue when I saw the switch putting itself as the root bridge in STP. Then I have noticed I to not see the CDP informati...

Hi, I'm currently studying the vlans chapters with Cisco Netacad, but I don't understand clearly the process of tagging.I believe I have understood some things : the frames from access ports are untagged. And the frames out of trunk ports are tagged ...

I have a SG300-10P feeding a satellite office in our warehouse, and I noticed recently that only one of the uplink ports is up.I'm not sure how long the port has been down, but when I installed the switch about 8 months ago both uplink ports were up....

I get this error: *Mar  1 00:00:14.998: %HARDWARE-3-MCU_I2C_READ_ERROR: I2C read failed in MCU and attached devices (e.g. Temperature Sensor) can't be read.*Mar  1 00:02:33.016: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to ...

Hi All,I have a pair of Cisco 3925 routers running on Cisco version 15.0(1r)m16 fc1 connected through a trunk link.I saw the below errors when i execute "show logging" on either routerSYS-2-BADPOOL Attempt to use buffer with corrupt pool pointer, ptr...

We were trying some things to get multiple VLANs to pass through some wireless bridges. In the confusion, we have misconfigured the port and locked ourselves out of the far switch, lol. The local switch has VLAN1 (default), VLAN2 (data), and VLAN3 (v...

Dear Folks,I am working with a IT organization as network administrator, at client site we are getting the MAC FLAPPING issue since 1 month, due to that some time it completely down my whole network. Scenario is like that, we are using Ruckus AP and ...