#cd /etc/yum.repos.d
#vi dag.repo
Fill-in the following lines and save it.
[dag]
name=Dag RPM Repository for Red Hat Enterprise Linux baseurl=http://apt.sw.be/redhat/el$releasever/en/$basearch/dag
gpgcheck=1
enabled=1
Issue this ;
# rpm –import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt
| Router#show cdp | Displays global CDP information (such as timers) |
| Router#show cdp neighbors | Displays information about neighbors |
| Router#show cdp neighbors detail | Displays more detail about neighbor device |
| Router#show cdp entry word | Displays information about device named word |
| Router#show cdp entry * | Displays information about all devices |
| Router#show cdp interface | Displays info about interfaces that have CDP running |
| Router#show cdp interface x | Displays info about specific interface x running CDP |
| Router#show cdp traffic | Displays traffic infopackets in/out/version |
| Router(config)#cdp holdtime x | Changes length of time to keep CDP packets |
| Router(config)#cdp timer x | Changes how often CDP updates are sent |
| Router(config)#cdp run | Enables CDP globally (on by default) |
| Router(config)#no cdp run | Turns off CDP globally |
| Router(config-if)#cdp enable | Enables CDP on a specific interface |
| Router(config-if)#no cdp enable | Turns off CDP on a specific interface |
| Router#clear cdp counters | Resets traffic counters to 0 |
| Router#clear cdp table | Deletes the CDP table |
| Router#debug cdp adjacency | Monitors CDP neighbor information |
| Router#debug cdp events | Monitors all CDP events |
| Router#debug cdp ip | Monitors CDP events specifically for IP |
| Router#debug cdp packets | Monitors CDP packet-related information |
Caution:
Although CDP is an excellent source of information to you the network administrator, is it a potential security risk if a hacker gains access to one of your systems. The information that you gain through CDP is also gained by the hacker.
After you have used CDP to gather your information in a production environment, turn it off to thwart any bad people from using it for no good.
2900 Series Switch
| 2900Switch#copy flash:c2900XL-hs-mz-112.8.10-SA6.bin tftp | Same procedure as with router |
| Source filename [c2900XL-hs-mz-112.8.10-SA6.bin]? | Just press ENTER |
| Destination IP address or hostname [ ]192.168.1.3 | Address of TFTP server |
| Destination filename [c2900XL-hs-mz-112.8.10-SA6.bin]? | Just press ENTER |
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | Each bang symbol (!) = 1 datagram sent |
| | |
| 1119104 bytes copied in 21.43 secs | |
| 2900Switch# |
2950 Series Switch
| 2950Switch#copy flash tftp | Same procedure as with router |
| Source filename [ ]? c2950-c3h2s-mz.120-5.3.WC.1.bin | |
| Destination IP address or hostname [ ]192.168.1.3 | Address of TFTP server |
| Destination filename [c2950-c3h2s-mz.120-5.3.WC.1.bin]? | Just press ENTER |
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! | Each bang symbol (!) = 1 datagram sent |
| | |
| 1674921 bytes copied in 31.542 secs | |
| 2950Switch# |
