Device Manager
This section describes how to configure link aggregation in your network. Only SMLT is applicable to NNI; all other technology is applicable to both UNI and NNI.
This section includes the following topics:
•
“Configuring link aggregation” (page 183)•
“Configuring Split Multilink Trunking” (page 208)•
“Configuring Simple Loop Prevention Protocol” (page 220)Configuring link aggregation
This section describes how to configure and manage link aggregation, including LACP and multilink trunking. This section includes the following topics:
•
“Configuring LACP globally” (page 184)•
“Adding a MultiLink/LACP trunk” (page 185)•
“Adding ports to a multilink trunk” (page 192)•
“Viewing multilink trunk interface statistics” (page 193)•
“Viewing multilink trunk Ethernet error statistics” (page 195)•
“Managing LACP information” (page 198)•
“Configuring a port for LACP” (page 201)•
“Viewing LACP statistics” (page 206)Standby mode for aggregation groups of larger than eight ports is not supported in the current release.
Configuring LACP globally
The main purpose of LACP is to manage switch ports and their port memberships to form link aggregation groups (LAG). LACP can
dynamically add or remove LAG ports, depending on their availability and states.
To configure Link Aggregation Control Protocol (LACP) globally:
Step Action
1 From the Device Manager menu bar, choose VLAN > MLT/LACP.
The MLT_LACP, LACP Global tab appears (Figure 78 "MLT_LACP, LACP Global tab" (page 184)).
Figure 78
MLT_LACP, LACP Global tab
2 To enable LACP globally, select Enable.
3 Edit the remaining boxes as desired, or retain the default values.
Table 34 "MLT_LACP, LACP Global tab fields" (page 185)defines the MLT_LACP, LACP Global tab fields. Configuration changes to the LACP timers are not reflected immediately. LACP timers are not reset until the next time LACP is restarted globally or on a port. This ensures consistency with peer switches.
4 Click Apply.
Table 34 "MLT_LACP, LACP Global tab fields" (page 185).
Table 34
MLT_LACP, LACP Global tab fields
Field Description
Enable Globally enable or disable LACP.
SystemPriority Sets the system priority to all the LACP enabled aggregators and ports.
FastPeriodicTime Specifies the number of milliseconds between periodic transmissions using short timeouts. Sets this value to all LACP enabled ports.
FastPeriodicTimeOper The operating value of the fast periodic timer on the port.
SlowPeriodicTime Specifies the number of milliseconds between periodic transmissions using long timeouts. Sets this value to all LACP enabled ports.
SlowPeriodicTimeOper The operating value of the slow periodic timer on the port.
AggrWaitTimeOper The operating value of the aggregate wait timer on the port.
AggrWaitTime Specifies the number of milliseconds to delay aggregation to allow multiple links to aggregate simultaneously.
TimeoutScale Sets the value used to calculate timeout time from the periodic time. Sets this value to all LACP enabled ports. The range is 2 to 10.
TimeoutScaleOper The operating value of the timeout scale on the port.
SmltSysId Sets the LACP system ID for split multilink trunks. This is an optional parameter, and is only used for SMLT situations. You must configure the same LACP SMLT system ID on both aggregation switches to avoid loss of data. Nortel recommends that the SmltSysId be configured such that it matches the base MAC address of one of the chassis.
Adding a MultiLink/LACP trunk To add a MultiLink/LACP trunk:
Step Action
1 From the Device Manager menu bar, choose VLAN > MLT/LACP.
Figure 79
MLT_LACP, MultiLink/LACP Trunks
3 In the MultiLink/LACP Trunks box, click Insert to display the MLT_LACP, Insert Multilink/LACP Trunks box.
Figure 80
MLT_LACP, Insert MultiLink/LACP Trunks box
4 In the Id text box, type the ID number for the multilink trunk. 5 In the SvlanPortType text box, select normal.
Do not select uni, or nni, as these options generate error messages on MERS.
6 In the PortType section, select access or trunk.
7 In the Name text box, type a name for the multilink trunk, or accept the default name.
8 Select member ports and VLANs for this MLT/LACP trunk: a In the PortMembers box, click the ellipsis (...), select the
desired ports in the MltPortMembers box that appears, and then click Ok.
b In the VlanIds box, click the ellipsis (...), select the desired VLANs in the VlanIds box that appears, and then click Ok. 9 In the MltType section, select normalMLT, istMLT, or splitMLT.
For information about configuring SMLT, see“Adding a MLT-based SMLT” (page 208).
•
If splitMLT is chosen, in the SmltID box, enter the SMLT ID number.10 In the Multicast Distribution box, select enable or disable. Multicast distribution over MLT is supported only on Metro Ethernet Routing Switch 8600 E, M, and R modules. 11 Select or clear NtStgEnable.
12 In the Aggregatable box, select enable or disable. 13 Click Insert.
The MLT is added to the MultiLink/LACP Trunks tab in the MLT_LACP box.
For more information, see “MultiLink/LACP Trunks tab fields” (page 188).
--End--
MultiLink/LACP Trunks tab fields Table 35
MultiLink/LACP Trunks tab fields
Field Description
Id A value that uniquely identifies the multilink trunk. SvlanPortType Sets multilink trunk port type:
•
normal (default)•
uni (user-to-network interface)You must configure ports to which you want to provide VLAN transparency as UNI ports. UNI ports can only belong to one SVLAN. When you designate a port as a UNI port, the DiscardTaggedFrames parameter is automatically configured (Edit > Port > General > VLAN). This prevents traffic from leaking to other VLANs.
•
nni (network-to-network interface)NNI ports interconnect the switches in the core network, drop untagged frames on ingress, and insert the SVLAN tag at the egress. When you configure an NNI port, the DiscardUnTaggedFrames parameter is automatically configured (Edit > Port > General > VLAN).
Table 35
MultiLink/LACP Trunks tab fields (cont’d.)
Field Description
ATTENTION
Uni and nni options generate error messages on
MERS. Leave the option at its default value of
normal to avoid these error messages.
PortType Sets access or trunk port.
When the aggregatable field is set to enable, this field becomes read-only.
Name The name given to the multilink trunk. PortMembers The ports assigned to the multilink trunk.
MLT is supported on 10Base-T, 100Base-TX,
100Base-FX, and Gigabit Ethernet ports. All ports in an multilink trunk must be of the same media type (copper or fiber) and have the same settings for speed and duplex. All untagged ports must belong to the same spanning tree group.
For Metro Ethernet Routing Switch 8600 modules, up to eight same-type ports can belong to a single multilink trunk.
When the aggregatable field is set to enable, this field becomes read-only.
VlanIds The VLANs to which the ports belong.
When the aggregatable field is set to enable, this field becomes read-only.
MltType Specifies the type of multilink trunk:
•
normalMLT•
istMLT•
splitMLTSmltId The split multilink trunk ID assigned to both ends of the split trunk.
The corresponding split multilink trunks between aggregation switches must have the same SMLT ID.
Table 35
MultiLink/LACP Trunks tab fields (cont’d.)
Field Description
Multicast Distribution The multicast distribution state on MLT ports:
•
enabled•
disabled (default)Multicast distribution must also be configured on the chassis (Edit > Chassis > Mcast MLT Distribution). For more information, see Configuration — IP Multicast (NN46220-519). .
Multicast distribution over MLT is supported only on Metro Ethernet Routing Switch 8600 E, M, and R modules.
Lacp10gBackup Enable or disable 10G MLT reliance backup mode. The default is disable.
LocalDistributionOptio n
Specify the MLT load distribution option. Select either bmac, cmac, bvid, or isid. The default is bmac.
•
bmac—Egress port selection is based on the UNI MAC source address (SA) and destination address (DA).•
cmac—Egress port selection is based on the customer MAC SA and DA.•
bvid—Provides link protection. The b-vid option allows users to specify primary and secondary MLT ports for a particular SP VLAN. Egress port selection is based on the port priority and state.•
isid—Egress port selection is based on the I-SID or TDI.Note that the bvid option is only valid if there is a B-VID list for the SP VLAN or B-VLAN.
NtStgEnable Specifies if this multilink trunk is operating in Nortel Mode or in Cisco Mode.
•
true—Nortel mode•
false—Cisco modeTable 35
MultiLink/LACP Trunks tab fields (cont’d.)
Field Description
UniAggrMacIDx Specify the MLT aggregator MAC index. Enter a value in the range from 0 to 448. The default setting is 0.
Before an MLT ID can be assigned to a UNI or I-SID, the aggregator MAC offset value for that MLT must be set in the range 1 to 448.
QinqEtherType Specify the QinQ ethernet type value in hexadecimal format. This is only used when the MLT is associated with a QinQ service UNI. The default is 8020
(hexadecimal). EgressCosProfileNam
e
Specify the MLT egress Class Of Service profile name. The default is DEFAULT_PORT_PROFILE.
EgressPolicerAdminS tate
Enable or disable the MLT egress policer. The default is disable.
AggrEgressBandwidth Select disable for the split bandwidth policer; enable for the aggregator bandwidth policer. The default is to enable the aggregator egress bandwidth policer. AggrIngressBandwidt
h
Select disable for the split bandwidth policer; enable for the aggregator bandwidth policer. The default is to enable the aggregator ingress bandwidth policer. AggrMacAlloc Enable or disable aggregated MAC allocation. The
default is disable.
MtuAdminState Enable or disable the MTU Admin state. The default is disable.
Mtu The Maximum Transmission Unit size. Enter a value in the range from 1518 to 9600.
InterfaceType Specifies the type of interface:
•
normal•
silent•
uniConfiguredMembers The set of ports that are configured members of a MLT.
Ports can be added to a MLT through the Configured Members field only if aggregate is enabled for the MLT.
Table 35
MultiLink/LACP Trunks tab fields (cont’d.)
Field Description
When aggregate is enabled, PortMembers shows all the active members under the MLT which have negotiated, while ConfiguredMembers shows the statically added ports under the MLT. It also allows ports to be added under MLT.
Adding ports to a multilink trunk
To add ports to an existing multilink trunk:
Step Action
1 From the Device Manager menu bar, choose VLAN > MLT/LACP.
The MLT_LACP, LACP Global tab appears. 2 Click the MultiLink/LACP Trunks tab.
The MultiLink/LACP Trunks tab appears (Figure 79 "MLT_LACP, MultiLink/LACP Trunks" (page 186)).
3 Click Insert.
The MLT_LACP, Insert MultiLink/LACP Trunks box (Figure 80 "MLT_LACP, Insert MultiLink/LACP Trunks box" (page 187)) appears.
4 Double-click in the PortMembers box for the multilink trunk to which you are adding ports.
The MltPortMembers box (Figure 81 "MltPortMembers box" (page 193)) appears, showing the ports currently assigned for the selected multilink trunk. Available ports are editable.
Figure 81
MltPortMembers box
5 In the MltPortMembers box, click the port numbers to be added, or click All to add all ports to the multilink trunk.
For Metro Ethernet Routing Switch 8600 modules, up to eight same-type ports can belong to a single multilink trunk.
6 Click Ok.
The MltPortMembers box closes. The port numbers are added to the selected multilink trunk on the MultiLink/LACP Trunks tab in the MLT_LACP box.
7 Click Apply.
The ports are added to the multilink trunk.
--End--
Viewing multilink trunk interface statistics To view multilink trunk interface statistics:
Step Action
1 From the Device Manager menu bar, choose VLAN > MLT/LACP.
The MLT_LACP, LACP Global tab appears (Figure 78 "MLT_LACP, LACP Global tab" (page 184)).
2 Click the MultiLink/LACP Trunks tab.
The MultiLink/LACP Trunks tab appears (Figure 79 "MLT_LACP, MultiLink/LACP Trunks" (page 186)).
3 Select a multilink trunk. 4 Click Graph.
The Statistics, MLT, Interface tab appearsFigure 82 "Statistics, MLT, Interface tab" (page 194), displaying interface statistics for the selected multilink trunk.
Figure 82
Statistics, MLT, Interface tab
For more information, see Table 36 "Statistics, MLT, Interface tab fields" (page 194).
--End--
Table 36
Statistics, MLT, Interface tab fields
Field Description
InOctets The total number of octets received on the multilink trunk interface, including framing characters.
OutOctets The total number of octets transmitted out of the multilink trunk interface, including framing characters.
InUcastPkts The number of packets delivered by this multilink trunk to higher level protocols that were not addressed to a multicast or broadcast address at this sublayer.
OutUcastPkts The number of packets that higher level protocols requested be transmitted that were not addressed to a multicast address at this multilink trunk. This total number includes those packets discarded or unsent.
InMulticastPkt The number of packets delivered to this multilink trunk that were addressed to a multicast address at this sublayer. For a MAC layer protocol, this number includes both Group and Functional addresses.
Table 36
Statistics, MLT, Interface tab fields (cont’d.)
Field Description
OutMulticast The total number of packets that higher-level protocols requested be transmitted, and that were addressed to a multicast address at this multilink trunk, including those that were discarded or not sent. For a MAC layer protocol, this number includes both Group and Functional addresses.
InBroadcastPkt The number of packets delivered to this multilink trunk that were addressed to a broadcast address at this sublayer.
OutBroadcast The total number of packets that higher-level protocols requested be transmitted, and that were addressed to a broadcast address at this multilink trunk, including those that were discarded or not sent.
Viewing multilink trunk Ethernet error statistics To view multilink trunk Ethernet error statistics:
Step Action
1 From the Device Manager menu bar, choose VLAN > MLT/LACP.
The MLT_LACP box appears (Figure 78 "MLT_LACP, LACP Global tab" (page 184)).
2 Click the MultiLink/LACP Trunks tab.
The MultiLink/LACP Trunks tab appears (Figure 79 "MLT_LACP, MultiLink/LACP Trunks" (page 186)).
3 Select a multilink trunk, and then click Graph.
The Statistics, MLT box appears (Figure 82 "Statistics, MLT, Interface tab" (page 194)).
4 Click the Ethernet Errors tab.
The Ethernet Errors tab (Figure 83 "Statistics, MLT, Ethernet Errors tab" (page 196)) appears, displaying statistics.
Figure 83
Statistics, MLT, Ethernet Errors tab
For more information, see Table 37 "Statistics, MLT, Ethernet Errors tab fields" (page 196).
--End--
Table 37
Statistics, MLT, Ethernet Errors tab fields
Field Description
AlignmentErrors A count of frames received on a particular multilink trunk that are not an integral number of octets in length and do not pass the FCS check. The count represented by an instance of this object increments when the alignmentError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions occur are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC.
FCSErrors A count of frames received on a multilink trunk that are an integral number of octets in length but do not pass the Frame Check Sequence (FCS) check. The count represented by an instance of this object increments when the FrameCheckError status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions occur are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC.
Table 37
Statistics, MLT, Ethernet Errors tab fields (cont’d.)
Field Description
IMacTransmitError A count of frames for which transmission on a particular multilink trunk fails due to an internal MAC sublayer transmit error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the LateCollisions object, the ExcessiveCollisions object, or the CarrierSenseErrors object.
IMacReceiveError A count of frames for which reception on a particular multilink trunk fails due to an internal MAC sublayer receive error. A frame is only counted by an instance of this object if it is not counted by the corresponding instance of either the FrameTooLongs object, the AlignmentErrors object, or the FCSErrors object.
The precise meaning of the count represented by an instance of this object is implementation specific. In particular, an instance of this object can represent a count of receive errors on a particular interface that are not otherwise counted.
CarrierSenseError The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame on a particular multilink trunk. The count represented by an instance of this object increments at most once per transmission attempt, even if the carrier sense condition fluctuates during a transmission attempt.
FrameTooLong A count of frames received on a particular multilink trunk that exceeds the maximum permitted frame size. The count represented by an instance of this object increments when the frameTooLong status is returned by the MAC service to the LLC (or other MAC user). Received frames for which multiple error conditions occur are, according to the conventions of IEEE 802.3 Layer Management, counted exclusively according to the error status presented to the LLC.
SQETestError A count of times that the SQE test error message is generated by the PLS sublayer for a particular multilink trunk. The SQE test error message is defined in section 7.2.2.2.4 of ANSI/IEEE 802.3-1985.
Table 37
Statistics, MLT, Ethernet Errors tab fields (cont’d.)
Field Description
DeferredTransmiss A count of frames for which the first transmission attempt on a particular multilink trunk is delayed because the medium is busy. The count represented by an instance of this object does not include frames involved in collisions.
SingleCollFrames A count of successfully transmitted frames on a particular multilink trunk for which transmission is inhibited by exactly one collision. A frame that is counted by an instance of this object is also counted by the corresponding instance of either the ifOutUcastPkts object, the ifOutMulticastPkts object, or the ifOutBroadcastPkts object, and is not counted by the corresponding instance of the MultipleCollisionFrames object.
MultipleCollFrames A count of successfully transmitted frames on a particular multilink trunk for which transmission is inhibited by more than one collision. A frame that is counted by an instance of this object is also counted by the corresponding instance of either the ifOutUcastPkts object, the ifOutMulticastPkts object, or the ifOutBroadcastPkts object, and is not counted by the corresponding instance of the SingleCollisionFrames object.
LateCollisions The number of times that a collision is detected on a particular multilink trunk later than 512 bit-times into the transmission of a packet; 512 corresponds to 51.2 microseconds on a 10 Mb/s system. A (late) collision included in a count represented by an instance of this object is also considered as a (generic) collision for purposes of other collision-related statistics. ExcessiveCollis A count of frames for which transmission on a
particular multilink trunk fails due to excessive collisions.
Managing LACP information
Standby mode for aggregation groups of larger than eight ports is not supported in the current release.