Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] DAI (dynamic ARP inspection) dCEF (Distributed CEF) debug commands, troubleshooting CatOS debug spanning-tree, switch state command decision processes, MLS packet forwarding defining MST regions VACL matching conditions Delay delete flash command deleting SPAN sessions VLANs from switch ports demand-based switching Dense Mode (PIM) deploying VLANs descriptions, adding to switch ports Designated Ports election procedure RSTP topology selection of designing campus networks enterprise edge block network management block predictable network model server farm block service provider edge block enterprise networks, evaluating existing network hierarchical networks access layer core layer devices distribution layer detecting duplex mode mismatches on links switch port error conditions devices distribution layers hierarchical network design Layer 2 switching Layer 3 routing Layer 3 switching Layer 4 switching MLS (multilayer switching) DHCP snooping, configuring DiffServ packet classification QoS model Layer 2 classification Layer 3 classification trust boundaries dir command direct topology changes directories, crashinfo Disabled state (STP) disabling DTP STP with BPDU filtering discard adjacencies discovering, network topology displaying active EtherChannel parameters on port adjacency table contents CAM table entries CDP information detailed GLBP configuration information file system contents port configuration port status PortFast status STP information switch ports root-inconsistent state speed trunking status UpLinkFast status VRRP status information VTP management domain parameters distribution layer 2nd don't care bits double tagging 2nd drop adjacencies DSCP, Layer 3 QoS classification DTP (Dynamic Trunking Protocol) dual cores dual-homing duplex autonegotiation duplex mode link mismatches, detecting switch port configuration duplicate CAM table entries, handling dynamic auto trunking mode dynamic desirable trunking mode dynamic VLANs |