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v1.0 - 20050426

Telecommunications Industry Association TR-30.3/08-12-018 Lake Buena Vista, FL December 8 - 9, 2008. v1.0 - 20050426. Update on new IP network emulation algorithm Alan Clark, Telchemy 10/14/08. Structures. src_model. system. netblock. qlink. netblock. qlink. System init.

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v1.0 - 20050426

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  1. Telecommunications Industry Association TR-30.3/08-12-018 Lake Buena Vista, FL December 8 - 9, 2008 v1.0 - 20050426

  2. Update on new IP network emulation algorithmAlan Clark, Telchemy10/14/08

  3. Structures src_model system netblock qlink netblock qlink

  4. System init • Create system • Establish root for everything, set system params (e.g. time) • Create source • Define src type, parameters • Create netblock • Define link speeds, max queue sizes for rtl and ltr qlinks • Create interconnections • Link netblocks, link sources • Start

  5. qlink typedef struct qlink { u32 link_speed; u32 max_qbytes; emtime max_qdelay; emtime max_shared_qdelay; prob loss_prob; emtime qdelay; } qlink_t; Allows maxqsize to be set in terms of delay or bytes (manipulated in terms of delay). Emtime is a localized scaled integer time representation Prob is a scaled integer probability i.e. all integer representation

  6. source typedef struct src_model { u16 traffic_type; prob p12, p21; u32 burst_rate; /*pps*/ u16 state; emtime transition_time_to_burst; emtime remaining_duration_in_burst; qlink_t *output; src_model_t *prev, *next; } src_model_t; Traffic type = TCP, VoIP, IPTV…. P12, p21 = probabilities associated with transition to/from packet bursts Burst rate = packet burst rate Times = when did burst state, how much time left Output = destination qlink Prev/ next = links to other sources (for maintenance)

  7. Next step • Compute delays • Main simulation function

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