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If a command is supported in the system view, you can run the command in the interface view. If the command is not supported in the interface view, it runs in the system view. If the command is supported in the system view, the command runs successfully.

ACLs are classified into software ACLs and ACLs referenced in traffic policies.

After software ACL 2001 is created and its rules are configured, the ACL and its rules will be deleted if you run the undo acl 2001 command in any view under either of the following conditions:

ACL 2001 is not referenced by any traffic policy.
ACL 2001 is referenced by a traffic policy but the traffic policy is not applied to any interface or VLAN.

you can find GPBD, GPFD at Thunder-link.com

The S5720HI does not allow traffic classifiers to reference advanced ACLs containing the ttl-expired field or user-defined ACLs.
On the S5720HI, if a traffic classifier contains if-match ipv6 acl { acl-number | acl-name }, the associated traffic behavior cannot contain the remark 8021p [ 8021p-value | inner-8021p ], remark cvlan-id cvlan-id, or remarkvlan-id vlan-id action.

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.

Question
How to configure DBA when GPBD/GPFD and the OT928G are used together? The version of the OLT with GPBD/GPFD is V800R007C00 and the version of the OT928G is V100R003C020.

The multicast BFD session uses multicast packets and is not affected by the protocol status on an interface. When the BFD session goes Down and the protocol status on the interface changes to BFD Status Down, multicast BFD packets can still be sent. After the link recovers, the multicast BFD session can become Up through negotiation. As a result, the interface is unlocked and becomes Up. Unicast packets, however, cannot be sent or received after the protocol status on the interface goes Down, which causes deadlock.
Thunder-link.com provide GPON service board, such as GPBD, GPFD

The registration procedure is as follows:
1.The fit AP obtains a Fit AP IP address and DHCP server IP address from the DHCP server.
2.The fit AP broadcasts a Discovery Request message at Layer 2 to attempt to associate with an AC.
3.After receiving the Discovery Request message, the AC checks whether the fit AP has the access right. If the fit AP is authorized, the AC replies with a Discovery Response message.
4.The fit AP downloads the latest software version from the AC.
5.The fit AP downloads the latest configurations from the AC.
6.The fit AP exchanges service data packets with the AC.

Thunder-link.com have Switches, like S5700, S7700, S9700

A site survey involves the following tasks:
Determine the coverage objects and requirements.
Obtain the layout of the areas to be covered from the customer.
Learn about the network topologies in the areas.
Obtain contact information of customer's onsite technical personnel.
Identify device installation positions and power supply mode (completed by the asset management personnel of the property management).
Determine the positions to install APs, power cables, and network cables with the asset management personnel. Check whether Internet access resources are available.
Determine whether a distributed antenna system (DAS) is required according to the coverage objectives. If a DAS is available, obtain the DAS design drawings from the customer. If not, ask the carrier whether a DAS is required. If a new DAS needs to be established, determine the positions of antennas with the asset owners.
Check the construction materials and calculate signal loss.
Check for interference sources.
Collect the following information during a site survey:
Layout of the coverage areas
Mark the cabling routes and device installation positions on the layout drawings.

Building arrangement and structure in the coverage areas
Calculate signal coverage distance of APs based on building arrangement and structure.

Number of users and required bandwidth
Calculate the network capacity based on the number of users and bandwidth required.

Device installation positions
Topology and bandwidth resources of the wired network
Whether there are sufficient optical fibers and wired network resources to transmit WLAN data
Signal losses caused by walls, doors, windows, and other construction materials
Locations and signal strengths of interference sources
Requirements of users
Thunder-link.com haveOSN 2500, OSN 3500, OSN 7500

H801GPBC Board
The H801GPBC is a 4-port GPON OLT Interface Board. It works together with the optical network terminal (ONU) to provide GPON access services.

Direct forwarding: Packets do not need to be encapsulated and decapsulated. Therefore, the forwarding efficiency is high, and it is easy for network administrators to locate faults. However, user packets may be intercepted during transmission, threatening information security. In addition, packets of service VLANs need to be transparently transmitted, which increases maintenance workload on the Layer 2 network between ACs and APs.

Tunnel forwarding: Packets are encrypted using the Datagram Transport Layer Security (DTLS) protocol, which prevents attackers from intercepting packets transmitted on the network. Therefore, tunnel forwarding has a high security. The configuration is also simple because only packets of the management VLAN need to be transparently transmitted between APs and ACs. However, encrypted packets make fault location difficult. Moreover, the forwarding efficiency is lower than that in direct forwarding because data packets must be encapsulated with a CAPWAP header.
Thunder-link.com provide GPON service board, such as GPBD, GPFD

Operation procedure:

1.Check whether the AP exists.
2.Check whether the VAP of the AP is fully configured.
3.Check whether the radio interface is bound to the radio profile.
4.Check whether the service set is configured correctly and bound to the radio interface.
5.Check whether the configuration is committed.
6.Check whether the AP works properly and whether the configuration is delivered successfully.
Thunder-link.com provide GPBD and GPFD

Private network labels can be distributed in either of the following ways:

One label per VPN instance
One label per VPN route
When a large number of VPN routes exist on a network, many private network labels are required if one VPN route is allocated with one label. These private network labels may use up all entries, In this case, each VPN instance can be allocated a private network label to reduce the chip entries used.

Thunder-link.com have GPBD, GPFD and GPBH

The H805GPBD board supports the following functions:
Eight GPON SFP ports (one-fiber bi-directional port)
A maximum of 128 ONTs for each GPON port
Class B+ and class C+ optical modules
Received signal strength indicator (RSSI) detection and controlled optical signal transmission of the optical module
ONU-based shaping
Temperature query and board power-off in case of a high temperature

The basic working principle of the H802GPBD board is as follows:
The control module loads the board software, controls the running of the board, and manages the board.
The switching module aggregates the signals from eight GPON ports.
The interface module performs conversion between GPON optical signals and Ethernet packets.
The power module supplies power to other functional modules of the board.
The clock module provides clock signals for other functional modules of the board.

Configure the Wi-Fi service through web pages or TR069 servers for an ONT(such as HG8245H) that supports Wi-Fi. For details, see the user manual of each ONT device.

802.11e defines Quality of Service (QoS) for the wireless LAN, which provides the required service quality for voice and multimedia applications and enhances network performance. Wi-Fi Multimedia (WMM) defines four access categories(such as OLT[url][/url], DSLAM), including voice, video, best effort, and background to optimize network communication quality and ensure stable access of corresponding applications to network resources. The WMM standard is a subset of IEEE 802.11e.

If the link between two communication ends encounters an instant disconnection after the two ends become Up, one end sends a BFD Down packet to the remote end after detecting the Link Down event. The remote end sends a BFD Up packet to the local end before receiving the BFD Down packet. The local end does not change its state after receiving the Up packet. This prevents network flapping.


We can supply Huawei OSN 2500, OSN 3500, OSN 7500

The requirements for successfully establishing an LDP LSP include:
Run the display mpls ldp session command to check whether an LDP session is correctly set up.
Run the display ip routing-table command to check whether reachable routes are generated.
Run the display mpls ldp peer command to check whether the route outbound interface is the same as the discovery source of the LDP peer.
Check whether the configuration meets the triggering condition for establishing LSPs. You can check the triggering condition for establishing LSPs in the MPLS view. The default configuration is lsp-trigger host.
If the LSP fails to be established although the preceding requirements are met, run the debugging mpls ldp fec command to check the process of establishing this LSP.
Switches, S5700, S7700

When a host network segment is connected to the interfaces on multiple devices, to avoid data conflict, only one device interface is allowed to send Query messages. This interface acts as the querier. The other device interfaces that run IGMP can receive to the IGMP messages on the network segment.

In IGMPv1, querier selection depends on the multicast routing protocol, such as PIM. In IGMPv2 and IGMPv3, the device interface with the lowest IP address acts as the querier on the network segment

S9700, s5700

LSPs are generated strictly based on IP routing. Routing protocols such as OSPF and IS-IS have a mechanism to ensure loop-free routes. Therefore, LDP loop detection is unnecessary.

TN52TOM, TN55TOX

If a device is during the LDP GR, you can run the display mpls graceful-restart command to check the GR information of all MPLS-related protocols, including the GR status, GR begin time, and GR type.
We can provide CCUE and GPON Borad

After a remote MPLS LDP session is established, the corresponding MPLS LSP cannot be generated if MPLS LDP is disabled on some interfaces. When MPLS LDP is disabled on an interface, the remote LDP session can be established. The LSP labels, however, are allocated hop by hop, which requires that MPLS LDP be enabled on all interfaces along the LSP.

MSTP, OSN 3500, OSN 7500

When only one RP exists on the network, you can configure a static RP rather than using a dynamic RP. This reduces bandwidth occupied by messages exchanged between the candidate rendezvous point (C-RP) and the bootstrap router (BSR).

Pay attention to the following when configuring a static RP:

The same static-rp command must be used on all the switches in the PIM-SM domain.
If the preferred keyword is not used when you configure the static RP, the switch(like S5700) prefers the dynamic RP elected through the BSR mechanism. The switch prefers the static RP only when you specify the preferred keyword in the static-rp command.
If multiple static RPs are available for a multicast group, the RP with the largest IP address serves the group.
If an ACL is specified in the command, the static RP serves only the groups permitted by the ACL.

The possible causes are as follows:

The network is disconnected. Check whether the PC is disconnected from the switch.
The HTTP server of the switch(like S5700) is disabled.

AS-external (ASE) link-state advertisements (LSAs) are generated through imported routes. When OSPF is enabled on the output interface on which routes are imported (The enabled OSPF process must be the same as the OSPF process that generates the ASE LSAs) and the outbound interface is of the broadcast network type, the forwarding address is the next hop address of the imported route. Otherwise, the forwarding address is 0.
The forwarding address of a not-so-stubby area (NSSA) LSA is non-zero.

When the output interface of the redistributed route is enabled in the same NSSA and the output interface is of the broadcast network type, the forwarding address is the next-hop address of the redistributed route. Otherwise:
If a loopback interface exists in an NSSA area, the forwarding address is the loopback interface address.
If no loopback interface exists, the forwarding address is the address of the first interface that is up in the NSSA.

SSN4SL64, MSTP

IGMP snooping and IGMP snooping proxy have the same functions but different principles. IGMP snooping is used to obtain user information by snooping IGMP messages, whereas IGMP snooping proxy snoops and processes IGMP messages sent from user hosts before sending them to an upper-layer router.

Compared with a device enabled with IGMP snooping, a Layer 2 device enabled with IGMP snooping proxy plays the role of a router at the user side and periodically sends Query messages, and plays the role of a host at the network side and sends IGMP Report or Leave messages to its upstream device. Compared with IGMP snooping, IGMP snooping proxy suppresses multicast traffic flooding on a Layer 2 network and reduces the number of protocol packets and network loads. An IGMP snooping proxy-enabled device needs to maintain the member port entry database and function as a proxy of a router. As a result, IGMP snooping proxy increases device implementation complexity and device resource consumption.

S7700, S9700