Test package - Multicast
| Type of probe required |
Genalyzer G100, Genalyzer G1000 or own PC hardware |
| Number of probes needed |
2 or 3 depending on test |
| Support for tests on the management interface |
Yes |
| Support for tests on VLAN interfaces |
Yes (each physical interface handles 8 VLAN:s according to 802.1q) |
| Support for tests on Q-in-Q interfaces |
No |
| Priority marking |
Layer 3 QoS: IP precedence or DSCP (defined per flow)
Layer 2 CoS: p bits according to VLAN 802.1p (defined per interface) |
| Multicast support: Verifies the network’s basic support for multicast. |
Number of probes: 2, one multicast playout and one receiver
The test verifies:
- That no multicast traffic is received before IGMP join
- That multicast traffic is received after IGMP join
- That multicast traffic stops after IGMP leave
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| Multicast leakage: Checks for any leakage during multicast usage. |
Number of probes: 3, one multicast playout and two receivers
The test verifies:
- Verifies that multicast traffic is not sent on other access ports than the one who explicitly asked for the multicast stream
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| IGMP zapping time: Measures the network’s delay during channel zapping with IGMP join and leave. |
Number of probes: 2, one multicast playout and one receiver
The test verifies:
- Min, average and max delay during channel zapping. Can use from 10 to 1000 channel zappings.
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IGMP zapping times during IGMP load: Measures the network’s delay during IGMP join/leave on a customer access port, when the network is stressed by simultaneous IGMP join/leave on another access port.
Verifies that an end user or virus cannot sabotage the IPTV service. |
Number of probes: 3, one multicast playout and two receivers
The test verifies:
Min, average and max delay during channel zapping. Can use from 10 to 1000 channel zappings. Simultaneously, the network is stressed by 1-1000 zappings per second. |
Forwarding during IGMP load: Measures the IPTV performance and quality during IGMP join/leave on a customer access port, when the network is stressed by simultaneous IGMP join/leave on another access port.
Verifies that an end user or virus cannot sabotage the IPTV service. |
Number of probes: 3, one multicast playout and two receivers
The test verifies:
Measures the multicast stream’s bandwidth, loss, reordering, one-way delay and jitter when the network is stressed by 1-1000 zappings per second. |
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