Etherchannel Notes from this weekend:To check the load balancing accross the links use the following command:
show port-channel traffic:D
Reminder - for Layer 3 port-channels, configure 'no switchport' on the physical interfaces first before configuring the port-channel
Layer 2 reminders:Ethernet V2 and IEEE802.3 frames are different.
Ethernet V2 have a 2-byte Type field.
IEEE802.3 have a 2-byte Length field & 3 x 1-byte fields - Destination Service Access Point (DSAP), Source Service Access Point (SSAP) and Control. These are called LLC fields.
VTP gotchas this weekend -without any configuration, the default is server mode
without any domain name a switch will assume the domain name of the first received VTP update
Although VTPv3 supports extended vlans, it does not prune them :O
VLAN database mode ALWAYS only allows manipulating normal range VLANs, regardless of the VTP version and VTP mode
PPP header = 2 bytes
PPPoE header = 6 bytes
Private VLANs can always communicate with trunk ports
STP: port costs are only applied to RECEIVED BPDUs, not sent BPDUs
Here are my results from the post chapter quizzes... not stunning, but mostly just misreading questions or forgetting something small:
|Switched Networking Basics Quiz|
|Virtual LANs and VLAN Trunking Quiz|
|Spanning Tree Protocol Quiz|