So I have a prefix that I am advertising to my BGP neighbor and I dont want this BGP neighbor to advertise this prefix to their BGP neighbors. What do I do? I use well known communities.
First I create an ACL that will match the prefix I want filtered.
# access-list 10 permit 10.10.10.0 0.0.0.255
Then I [...]

Ever wonder how EIGRP calculates its metric for routes? EIGRP metric calculation uses a composite of four values which are bandwidth, delay, load, and reliability. From these four, EIGRP only uses bandwidth and delay by default. The other two just sit and collect dust. The mtu K value is NOT used in metric calculation! But [...]

When the cam table gets over filled on Cisco switches, the switch starts treating unicast frames like broadcast frames flooding the ports. To fix this, determine which vlan is the culprit with many MAC addresses and decrease the aging timer to discard inactive enties.
This will set the aging timer for vlan 100 to 15 seconds.
# [...]