Cisco Show "free" (not used for a while) ports on Cisco switch with one command Reasonably common task I come accross is to find free ports on switches (ports that havent been used for sometime). Sometimes its very easy where you can use an NMS or similar to
Cisco Display the specific port used in an etherchannel for given src/dst info Etherchannel on Cisco switches uses a hashing algorithm to determine which interface within the bundle to send the data over i.e. The port choice is deterministic and will always be the same
IP Quickest way to change an IP in windows Quite often at work we need to manually change the IP of our laptops for testing various things. Since our laptops are not the quickest around town I quickly got bored of clicking
1801 Cacti host template for Cisco 1801 ISR Everyone loves Cacti (?) so heres the first of my own host templates for Cacti. I should just mention that although I I use these templates you should consider them as untested/use at
Cacti How to install and use snmpwalk Snmpwalk is a great tool for Linux boxes. You can easily list all OIDs a SNMP host has to offer then filter the results to your needs and find OIDs to import into
642-691 BGP Attributes When BGP sends an UPDATE packet to a peer it sends path attributes associated with the prefix. These path attributes are then used by BGP to pick the best route to a destination.
642-642 QoS fields The QoS fields used by the network device depend on the capabilities of the device and the QoS deployments of the network. Below is a little info about a few of these fields.
642-642 IP Precedence DSCP and CoS relationships As part of studying the 642-642 QoS exam course is seems quite important to understand the relationship between the various ways of marking traffic. Below are some notes I've made so far about