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Jorna's Posts

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Science/TechnologyDefault Configuration describes The Following Default Mappings: by jorna(op): 4:22am On Nov 17, 2016
Mappings from 802.1p priorities to PHBs and colors
Mappings from PHBs and colors to 802.1p priorities
Mappings from DSCP priorities to PHBs and colors
Mappings from PHBs and colors to DSCP priorities
Mappings from MPLS EXP priorities to PHBs and colors
Mappings from PHBs and colors to MPLS EXP priorities
 NOTE:
Only the S5720EI, S5720HI, S6720EI, and S6720S-EI support mappings from MPLS EXP priorities to PHBs and colors on interfaces in the inbound direction and mappings from PHBs and colors to MPLS EXP priorities on interfaces in the outbound direction.
Science/TechnologySystem Response Of ONT by jorna(op): 4:03am On Nov 16, 2016
The system displays the message "Number of ONTs that can be added: x, success: y" after an ONT is added successfully. The x and y are the number of the ONTs that can be added and the number of the ONTs that are added successfully. At the same time, the system displays the ID of the port where the ONT is located and the ONT ID.
Science/TechnologyDoes GPBD Has Any Version Requirement Of OLT Software? by jorna(op): 3:05am On Nov 10, 2016
No, just make sure your OLT software included the package of your GPBD board version.
Science/TechnologyHow Do I Obtain The Web Page File Of S6720? by jorna(op): 3:57am On Nov 09, 2016
Obtain the Web Page File of S6720
To obtain a web page file, visit http://www.thunder-link.com/support and download the software package containing the web page file based on the product name and version. The file is named in the format product name-software version number.web file version number.web.7z.
Science/TechnologySetting The Rate Limitation Mode Of A Card by jorna(op): 3:55am On Nov 08, 2016
Navigation Path
1.In the Main Topology, double-click the required NE in the Physical Root navigation tree; or right-click the required NE and choose NE Explorer from the shortcut menu.
2.Choose NE Panel from the navigation tree.
3.Select a card, right-click, and then choose Configure GPBD Board Car Mode.
Guideline
To set the rate limitation mode of a service virtual port on the card, perform this operation. The rate of a port can be limited based on the port or service flow. When the rate of a card is limited based on the port, the traffic indexes that are referenced when you create the service virtual port is invalid. In this case, the traffic is limited according to the priority of the packet transmitted through the port.
Science/TechnologyGPBD Specification And Datasheet by jorna(op): 4:00am On Nov 07, 2016
Service ports
GPON Port 8-GPON Port
Device Specifications
Dimensions (W x D x H) 22.86 mm x 237.00 mm x 395.40 mm
Power Consumption and Maximum Frame Size
Power Consumption H802GPBD : Static: 45 W, Maximum: 51 W
H805GPBD: Static: 43 W, Maximum: 49 W
Maximum Frame Size For V800R011C00 and earlier versions: 2000 bytes
For V800R012C00 and later versions: 2004 bytes
Operating temperature -25°C to +65°C
GPON SFP Module Specification
Type B+ Module : One-fiber bi-directional optical module, class B+
C+ Module : One-fiber bi-directional optical module, class C+
Operating Wavelength Tx: 1490 nm, Rx: 1310 nm
Encapsulation Type SFP
Port Rate Tx: 2.49 Gbit/s, Rx: 1.24 Gbit/s
Minimum Output Optical Power B+ Module : 1.50 dBm
C+ Module : 3.00 dBm
Maximum Output Optical Power B+ Module : 5.00 dBm
C+ Module : 7.00 dBm
Maximum Receiver Sensitivity B+ Module : -28.00 dBm
C+ Module : -32.00 dBm
Optical Connector Type SC/PC
Optical Fiber Type Single-mode
Reach 20.00 km
Overload Optical Power B+ Module : -8.0 dBm
C+ Module : -12.0 dBm
Extinction Ratio 8.2 dB
Science/TechnologySetting The Layer2 Isolation Status Parameters by jorna(op): 3:21am On Nov 04, 2016
Guideline
When Layer 2 isolation is disabled, Layer 2 bridging can be implemented directly if two users require Layer 2 bridging. They do not need to send the packets to the upper-layer gateway to implement the Layer 3 bridging.
Layer 2 bridging is supported by EPON, GPBC, and GPBD boards only. In addition, these boards must cooperate with the SCUL board to implement Layer 2 bridging.
Science/TechnologyModifying A GPON UNI Port by jorna(op): 3:42am On Nov 03, 2016
Navigation Path
1.In the Main Topology, double-click the required NE in the Physical Root navigation tree; or right-click the required NE and choose NE Explorer from the shortcut menu.
2.Choose GPON > GPON Management from the navigation tree.
3.On the GPON(such as GPFD, GPBD) UNI Port tab page, set the filter criteria to display the required GPON UNI ports.
4.Right-click a record and choose Modify from the shortcut menu.
Science/TechnologyIn The Downstream Direction by jorna(op): 4:19am On Nov 02, 2016
The OLT sends Ethernet frames to the GPON service(such as GPFD) processing module based on configured mapping rules between service ports and uplink ports. The GPON service processing module then encapsulates the Ethernet frames into GEM PDUs for downstream transmission using a GPON port.
GPON transmission convergence (GTC) frames containing GEM PDUs are broadcast to all ONUs connected to the GPON port.
The ONU filters the received data according to the GEM port ID contained in the GEM PDU header and retains the data only belonging to the GEM ports of this ONU. Then, the ONU decapsulates the data to Ethernet frames and sends them to end users using service ports.
Science/TechnologyHow To Troubleshoot The Fault Of Service Board Startup Failure After An Upgrade. by jorna(op): 4:10am On Nov 01, 2016
Fault Type
System failure
Keyword
Service board startup failure
Abnormal board status
Fault Description
After the MA5600T is upgraded from V800R011C00 to V800R013C10, the H802SCUN control board runs normally but the GPBD board is abnormal. After being reset, the GPBD board is still abnormal.
Alarm Information
None
Possible Cause
The GPBD board is faulty.
The IO board package file is incomplete or unmatched.
Procedure
1.Replace the GPBD board but the fault persists. Install the GPBD board to another OLT, the GPBD board runs normally, indicating that this board is normal.
2.Run the display io-packetfile information command to query the IO board package file. It is found that no 10GE parameter in the queried information.
3.Unpack and pack the IO board package file, reserve the 10GE parameter, and load this IO board package file again. This fault is rectified.
Suggestion and Summary
The IO board package file used in an H802SCUN control board upgrade must contain the 10GE parameter (even though no 10GE board exists).
Science/TechnologyWhat Is The Detail About GPFD? by jorna(op): 3:55am On Oct 31, 2016
[urlhttp://www.thunder-link.com/GPFD_p571.html]GPFD[/url] is a 8 port GPON interface card of Huawei OLT, provide GPON service access from ONT. GPBD can maximum access 8*128 GPON subscribers. GPBD has different part number like H80D00GPBD01, H80D00GPBD02 etc, but basically you only need to identity H802GPBD, H805GPBD, H806GPBD H807GPBD version, and with B+ or C+ SFP module.
Science/TechnologyIntroduction To The GPON System by jorna(op): 3:16am On Oct 27, 2016
Mainstream PON technologies include broadband passive optical network (BPON), Ethernet passive optical network (EPON), and gigabit passive optical network (GPON). Adopting the ATM encapsulation mode, BPON is mainly used for carrying ATM services. With the obsolescence of the ATM technology, BPON also drops out. EPON is an Ethernet passive optical network technology. GPON is a gigabit passive optical network technology and is to date the most widely used mainstream optical access technology.
In the GPON network, the OLT is connected to the optical splitter through a single optical fiber, and the optical splitter is then connected to ONUs. Different wavelengths are adopted in the upstream and downstream directions for transmitting data. Specifically, wavelengths range from 1260 nm to 1360 nm in the upstream direction and from 1480 nm to 1500 nm in the downstream direction.
The GPON adopts WDM to transmit data of different upstream/downstream wavelengths over the same ODN. Data is broadcast in the downstream direction and transmitted in the TDMA mode (based on timeslots) in the upstream direction.
Science/TechnologyWhat Commands Are Used To Obtain The Information About The OSPF Network Type? by jorna(op): 7:42am On Aug 25, 2016
Command
Description

display ospf interface
Displays OSPF interface information.

ospf network-type
Sets the network type for an interface.
S7700
Technology MarketHow Does IS-IS Obtain The Maximum Number Of Load-balancing Routes? by jorna(op): 3:36am On Aug 24, 2016
IS-IS obtains the maximum number of IPv4 and IPv6 load-balancing routes from the route management (RM) module in the PAF file.

S9700,LS-S9706
Science/TechnologyWhy Is The OSPF Default Cost Incorrect? by jorna(op): 7:35am On Aug 17, 2016
For example, after the OSPF process is enabled on the device, the information about the interface is displayed. The output information shows that the default OSPF cost of an Ethernet interface is 7. Generally, the default OSPF cost is 1.

The default cost of an OSPF interface is calculated based on the bandwidth and bandwidth-reference. Bandwidth-reference is configured under the OSPF process. Normally, the default bandwidth-reference value is used. If the default bandwidth is 100 Mbit/s, the OSPF cost is calculated as 1.

HG8240F, ONT
ComputersWhat Is The LSA Retransmit Interval? How To Set It? by jorna(op): 4:23am On Aug 16, 2016
OSPF must send an LSAck packet after receiving a link-state advertisement (LSA). LSAs are retransmitted until they are acknowledged. The link-state retransmit interval defines the time between retransmissions. You can run the ospf timer retransmit interval command to set the retransmit interval. The default interval is 5 seconds.

LS-S9703, LS-S9706
Science/TechnologyCan A PIM Domain Run PIM-DM And PIM-SM Simultaneously? by jorna(op): 4:37am On Aug 15, 2016
A PIM Domain cannot run PIM-DM and PIM-SM simultaneously.

Since PIM Hello packets do not carry messages in PIM mode, a PIM switch (such as LS-S9703) cannot know the mode of the PIM protocol that its PIM neighbor runs. If the RPF interface and the RPF neighbor run PIM protocols of different modes, two neighboring devices cannot learn PIM routing information from each other. As a result, related multicast forwarding entries cannot be correctly created.
Science/TechnologyWhat Is The Purpose Of A Tag In An ASE-LSA And NSSA-LSA? by jorna(op): 3:50am On Aug 10, 2016
In OSPF VPN multiple instances, a link-state advertisement (LSA) tag is used to prevent routing loops between PEs.

In OSPF public network instances, the tag field does not prevent routing loops but is used to set the filtering conditions of routing policies.

The rules of setting the tags of ASE-LSAs and NSSA-LSAs are as follows:

In OSPF multiple instances, the route tag is set through the route-tag command.
In OSPF public networks, the route tag is set through the default tag command.
In either of the preceding two cases, you can run the import-route tag command to set the tag.

LS-S7703, LS-S7706
Science/TechnologyHow To Set The Durations Of The Hold Timer And Keepalive Timer Of The BGP Peer? by jorna(op): 3:18am On Aug 09, 2016
You can run the peer timer command to set the durations of the Hold timer and Keepalive timer. This command specifies the timeout period of the BGP connection and the interval to send the Keepalive message. A longer timeout period can relieve the impact of link flapping, whereas a shorter timeout period makes the timer rapidly perceive link changes. After connections are established between two peers, the durations of the two timers are negotiated by the two peers and the shorter durations are adopted.



LS-S7703, LS-S7706
Science/TechnologyWhy Does Not The MTU Configuration Take Effect On Tunnel Interfaces Of A Switch? by jorna(op): 4:19am On Aug 02, 2016
Why Does Not the MTU Configuration Take Effect on Tunnel Interfaces of a Switch, such as S2309TP-EI-AC?

The maximum transmission unit (MTU) configuration is valid for packets sent to and from the control plane, but invalid for packets directly forwarded by hardware. To limit the size of packets forwarded by hardware, configure the MTU on physical interfaces.

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