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] [Z] ECN (Explicit Congestion Notification) ECT (ECN-capable Transport) bit Eggdrop Bot Eight-Class Model implementing EIGRP CE-to-PE routing CPU usage deploying in Site Type A sites high-availability issues deploying in Site Type B sites deploying in Site Type C sites 2nd deploying in Site Type D sites PE-to-CE routing metric propagation multiple VRF support redistribution into BGP EMSs (Ethernet multipoint services) enabling SSM end-to-end delay end-to-end remote-access architecture enforcement of QoS classes on SP IP network enhanced SLAs as server provider selection criteria enteprise networks connecting at Layer 3 to provider networks 2nd enterprise networks hub-and-spoke topology optimizing 2nd resiliency sample network backbone WAN global span of IT applications base IT communications infrastructure management's business desires new technology considerations 2nd 3rd regional WANs susceptibility to black-hole filtering enterprise VPN management acceptance testing CE management access 2nd CE provisioning monitoring optimization ordering planning establishing hierarchical topologies trust boundaries events capturing examples of interactive services exceeding SPD punt limits extranets |