Tuesday, March 3, 2009

Notes Catch-up

I've been sick the last couple of days and although I've made time to study, I have not devoted time to posting my notes. So here are my latest notes from Narbik's StN workbook, starting with QoS.
  • Priority queueing is processed like ACLs - top-down.
  • "priority-list x [interface|protocol|default] queue [tcp|udp|acl]" assigns traffic to a queue
  • "show queuing priority" shows priority queues
  • "priority-list x queue-limit " alters queue sizes
  • "custom queuing queue-list x" creates a custom queue much like a priority queue
  • With custom queuing, bandwidth is allocated by assigning byte-counts in increments of 1500
  • "hold-queue x out"WFQ packet limit for all queues
  • To create a rate-limit ACL using IPP, add binary of IPP levels. binary 01 is IPP 0, bianry 10 is IPP 1, so mask if binary 11 or 3.
  • "show interface | i Internet" shows all IP addresses (except secondary) with netmasks.
  • "sh run | in no\ "shows disabled servers. (note: there is a space after \)
  • rsvp must be done per interface along the path.
  • test rsvp using "ip rsvp sender-host|reservation-host" from config mode.
  • "ip rsvp sender" is used to proxy for another host.
  • "ip rsvp reservation" is used to proxy for another reservation host.
  • "frame-relay de-list x protocol ip tcp 80" can be used to assign protocols (such as HTTP) the de bit. Can be applied by using "frame-relay de-group x dlci y"
  • You can enable "random-detect dscp-based" directly on the interface.
  • ECN marks packets instead of dropping them.
Up next...3550/3560 QoS

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