Zte ZXR10 8900 Product Description page 59

supported. The functions of enabling STP on the aggregation link and on the port are
supported.
The ZXR10 8900 series support STP, RSTP, MSTP as well as the hybrid networking of
these three.
4.3.7.8 Link Aggregation Module
Link aggregation means that physical links with the same transmission media and
transmission rate are bound together, making them look like one link logically. The link
aggregation allows parallel physical links between the switches or between the switch
and the server to increase the bandwidth in multiples and simultaneously. So, this
technology is quite important in increasing link bandwidth and creating transmission
elasticity and redundancy. The link aggregation technology can be used to create a
connection of multi-gigabit in the Gigabit Ethernet network and to create a logical link
with a higher transmission rate in the fast Ethernet network. The link aggregation
technology serves a good protection purpose. If some links in a group of aggregation
link are faulty, the communication on them will be switched to the normal link rapidly.
ZXR10 8900 series switches implement the link aggregation protocol (LACP) defined in
IEEE802.3ad and support the link aggregation on the ports of the fast Ethernet network
and 10G Ethernet network and 10G port as well as the inter-board link aggregation.
4.3.7.9 Port Mirroring Module
The port mirroring function enables the traffic on one port to be copied to another port so
that the network administrator can perform a real-time flow analysis for diagnosing
network faults. This is a means for the network administrator for monitoring the network.
Every port of the ZXR10 89 series can be configured as a mirroring port. And it supports
the mirroring between ports of different rates and from multiple ports to a mirroring port,
cross-line card port mirroring as well as simultaneous mirroring of multiple mirroring
groups.
4.3.7.10 IGMP Snooping Module
IGMP Snooping is to maintain the corresponding relationship between the multicast
addresses and VLANs by snooping the IGMP packet communicated between users and
routers. It maps the members in one multicast group in one VLAN and forwarded the
received data packet only to the VALN corresponded to this multicast group. Same as
IGMP, IGMP Snooping is also used to manage and control the multicast group. And
both of them use the IGMP packet. Their difference is that IGMP runs on the network
layer while IGMP Snooping runs on the link layer. When the switch receives the IGMP
packet, IGMP Snooping will analyze the information carried in the IGMP packet and
establish and maintain the MAC multicast address table on L2.
If ZXR108900 series switches have enabled IGMP Snooping, the multicast packets will
be multicast on layer 2, while if ZXR10 89 series has not enabled IGMP Snooping, the
multicast packets will be broadcasted on layer 2.
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ZXR10 8900 Product Description
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