Alcatel-Lucent OS9-GNI-U24 사용자 설명서
Alcatel-Lucent
Page 44
OmniSwitch 9000
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Please note a link will not be established on any copper Ethernet port if any one of the following is true:
• The local port advertises 100 Mbps full duplex and the remote link partner is forced to 100 Mbps full duplex.
• The local port advertises 100 Mbps full duplex and the remote link partner is forced to 100 Mbps half duplex.
• The local port advertises 10 Mbps full duplex and the remote link partner is forced to 10 Mbps full duplex.
• The local port advertises 10 Mbps full duplex and the remote link partner is forced to 10 half duplex.
This is due to the fact that when the local device is set to auto negotiating 10/100 full duplex it senses the remote device is
not auto negotiating. Therefore it resolves to Parallel Detect with Highest Common Denominator (HCD), which is
“10/100 Half” according to IEEE 802.3 Clause 28.2.3.1.
However, since the local device is set to auto negotiating at 10/100 full duplex it cannot form a 10/100Mbps half duplex
link in any of the above mentioned cases. One solution is to configure the local device to auto negotiation, 10/100 Mbps,
with auto or half duplex.
not auto negotiating. Therefore it resolves to Parallel Detect with Highest Common Denominator (HCD), which is
“10/100 Half” according to IEEE 802.3 Clause 28.2.3.1.
However, since the local device is set to auto negotiating at 10/100 full duplex it cannot form a 10/100Mbps half duplex
link in any of the above mentioned cases. One solution is to configure the local device to auto negotiation, 10/100 Mbps,
with auto or half duplex.
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NI Module
Port Number / Type
User-Specified
Port Speed
(Mbps)
Supported
Port Speed
(Mbps)
Supported
User-Specified
Duplex
Supported
Duplex
Supported
Auto
Negotiation
Supported?
Negotiation
Supported?
OS9-GNI-C24
24 Copper twisted pair (RJ-45)
Auto/10/100/1000 Auto/full/half
Yes
OS9-GNI-P24
24 Copper twisted pair (RJ-45) w/PoE
Auto/10/100/1000 Auto/full/half
Yes
OS9-GNI-U24
Up to 24 high-density LC ports
1000
Full
Yes
OS9-XNI-U2
Up to 2 wire-rate fiber LC
10000
Full
Yes
OS9-XNI-U6
Up to 6 oversubscribed fiber LC
10000
Full
Yes
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By default, automatic crossover between MDI/MDIX (Media Dependent Interface/Media Dependent Inter-face with Crossover)
media is supported on OmniSwitch 9000 Series 10/100/1000Mbps (10BASE-T/100BASE-TX/1000BASE-T) ports.
Therefore, either straight through or crossover cable can be used between two OmniSwitch 9000 Series switches as long as auto
negotiation is configured on both sides of the link.
media is supported on OmniSwitch 9000 Series 10/100/1000Mbps (10BASE-T/100BASE-TX/1000BASE-T) ports.
Therefore, either straight through or crossover cable can be used between two OmniSwitch 9000 Series switches as long as auto
negotiation is configured on both sides of the link.
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By default, automatic crossover between MDI/MDIX (Media Dependent Interface/Media Dependent Inter-face with
Crossover) media is supported on OmniSwitch 9000 Series 10/100Mbps (10BASE-T/100BASE-TX) ports.
Therefore, either straight through or crossover cable can be used between two OmniSwitch 9000 Series switches as long
as auto negotiation is configured on both sides of the link.
Crossover) media is supported on OmniSwitch 9000 Series 10/100Mbps (10BASE-T/100BASE-TX) ports.
Therefore, either straight through or crossover cable can be used between two OmniSwitch 9000 Series switches as long
as auto negotiation is configured on both sides of the link.
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In redundant CMM configurations, the switch provides support for NIs during failover. In other words, if the primary
CMM fails or goes offline for any reason, NI modules will continue data transmission and routing functions during the
secondary CMM’s takeover process. This Availability feature is referred to as Smart Continuous Switching.
Incoming Layer 2 packets will continue to be sent to the appropriate egress port during failover.
Known routes will also be supported. (Note, however, that the NI cannot learn new routes without CMM support).
Any new route information will be ignored.) Spanning Tree will continue handling BPDUs received on the switch ports,
as well as port link up and down states. The Spanning Tree topology will not be disrupted.
Note. Smart Continuous Switching is designed to maintain traffic flow only during CMM failover and is not intended to
support long-term traffic flow. If both the primary and redundant CMM modules go offline or are removed from the
chassis, switch operations (including all NI support) will be disabled.
However, smart continuous switching is not possible on the OS9600 switch because it contains only one CMM slot.
CMM fails or goes offline for any reason, NI modules will continue data transmission and routing functions during the
secondary CMM’s takeover process. This Availability feature is referred to as Smart Continuous Switching.
Incoming Layer 2 packets will continue to be sent to the appropriate egress port during failover.
Known routes will also be supported. (Note, however, that the NI cannot learn new routes without CMM support).
Any new route information will be ignored.) Spanning Tree will continue handling BPDUs received on the switch ports,
as well as port link up and down states. The Spanning Tree topology will not be disrupted.
Note. Smart Continuous Switching is designed to maintain traffic flow only during CMM failover and is not intended to
support long-term traffic flow. If both the primary and redundant CMM modules go offline or are removed from the
chassis, switch operations (including all NI support) will be disabled.
However, smart continuous switching is not possible on the OS9600 switch because it contains only one CMM slot.