ePMP: Configuring SM Network page for Router Mode

Attribute

Meaning           

General

Network Mode

NAT: The SM acts as a router and packets are forwarded or filtered based on their IP header (source or destination).

Bridge: The SM acts as a switch and packets are forwarded or filtered based on their MAC destination address.

Router: The SM acts as a router and packets are forwarded or filtered based on their IP header (source or destination) using specific static routes and IP aliases configured by the operator.

Wireless IP Assignment

Static:  Wireless IP addressing is configured manually in fields Wireless IP Address, Wireless IP Subnet Mask, Wireless Gateway IP Address, Preferred DNS IP Address and Alternate DNS IP Address.

DHCP:  Device management IP addressing (IP address, subnet mask, gateway and DNS server) is assigned via a network DHCP server.

Wireless IP Address

Wireless Internet protocol (IP) address. This address is used by the family of Internet protocols to uniquely identify this unit on a network.

Wireless Subnet Mask

Defines the address range of the connected IP network. For example, if Wireless IP Address is configured to 192.168.2.1 and Wireless IP Subnet Mask is configured to 255.255.255.0, the device wireless interface will belong to subnet 192.168.2.X.

Wireless Gateway

Configure the IP address of a computer on the current network that acts as a gateway. A gateway acts as an entrance and exit to packets from and to other networks.

Preferred DNS Server

Configure The IP address of the preferred server used for DNS resolution.

Alternate DNS Server

Configure The IP address of the alternate server used for DNS resolution.

Ethernet Port Security

Disabled:  When disabled, any number of devices (MAC Addresses) can connect via the SM’s Ethernet (LAN) port.

Enabled:  When enabled, the number of devices (MAC Addresses) that can connect via the SM’s Ethernet (LAN) port can be restricted with the fields below.

Secure MAC Limit

Specify the maximum number of unique devices (MAC Addresses) that can connect via the SM’s Ethernet (LAN) port. Range is 1 – 254 devices.

MAC Aging Time

Specify the aging timer in seconds. The aging timer will determine the duration for which the SM will maintain the MAC Address in its bridge table. The timer is restarted any time traffic from a specific MAC address is received on the LAN port. Once the timer expires, the MAC Address is removed from the SM’s bridge table.

Ethernet Interface

IP Address

Internet protocol (IP) address. This address is used by the family of Internet protocols to uniquely identify this unit on a network.

Subnet Mask

Defines the address range of the connected IP network. For example, if Device IP Address (LAN) is configured to 192.168.2.1 and IP Subnet Mask (LAN) is configured to 255.255.255.0, the device will belong to subnet 192.168.2.X.

DHCP Server

Disabled: Use this setting when SM is in NAT mode, if there is an existing DHCP Server below the SM handing out IP Addresses or if all devices below the SM will be configured with static IP Addresses.

Enabled:  Use this setting when SM is in NAT mode, to use the SM’s local/onboard DHCP server to hand out IP addresses to its clients.

DHCP Start IP

Configure the first address which will be issued to a DHCP client. Upon additional DHCP requests, the DHCP Start IP is incremented until Local DHCP End IP is reached.

DHCP End IP

Configure the highest IP address in the DHCP pool that can be issued to a DHCP client.

Preferred DHCP DNS Server

Configure the primary DNS Server IP address which will be used to configure DHCP clients (if Local DHCP Server is set to Enabled).

Alternate DHCP DNS Server

Configure the secondary DNS Server IP address which will be used to configure DHCP clients (if Local DHCP Server is set to Enabled).

DHCP Lease Time

Configure the time for which a DHCP IP address is leased. When the lease time expires, the DHCP client must renew IP addressing via DHCP request.

DHCP Clients

The DHCP Client List table identifies hardware situated below the SM which shall be issued DHCP IP addressing information. The SM acts as a DHCP server, responding to requests from hardware connected to the SM.

MAC

Configure the physical address of the device which will retrieve DHCP IP addressing information from the SM.

IP

Configure the IP address which will be assigned to the device.

Name

Configure a logical name for the device configured (i.e. VoIP Phone1, or Network Camera1).

Static Routes

Route

When Enabled, it allows the operator to create static routes that will apply to both the Wireless and Ethernet interface of the SM.

This allows operators to configure a custom table of explicit paths between networks.  Static routing is often used as a method to reduce the overhead of processing dynamic routes through a network when the specific path is known (or, it is simpler to define a specific path).  Static routing is also used as a backup when dynamic routing protocols fail to complete a route from one network to another.

In router mode, the Static Routes table is referenced by the SM to forward/filter packets to a particular destination configured by the user based on the IP addressing information contained in the table.

Since static routes do not change with network changes, it is recommended to only use static routes for simple network paths which are not prone to frequent changes (requiring updates to the routes configured on the ePMP SM).

It is important to consider each hop in a static route’s path to ensure that the routing equipment has been configured to statically or dynamically route packets to the proper destination.  Otherwise, the network communication will fail.

 Note

Network Address Translation (NAT) is not performed when the SM is in Router mode.

Target Network IP

Configure the target subnet/network’s IP address to which the SM should route the packets.

Subnet Mask

Configure the subnet mask for the Target Network IP address.

Gateway

Configure the gateway to which packets that match the Target Network IP Address and Subnet Mask are sent.

Description

Provide a description to easily identify the static route and its purpose.

Separate Wireless Management Interface

Separate Management IP

Disabled:  When disabled, the Wireless IP is the management interface for the SM.

Enabled:  When enabled, the IP Address below is the management interface for the SM.

IP Assignment

Static:  Separate Wireless Management Interface is configured manually in fields IP Address, Subnet Mask and Gateway.

DHCP:  Management IP addressing (IP address, subnet mask, gateway and DNS server) is assigned via a network DHCP server.

IP Address

Configure the IP address that will be used to access the SM’s management interface when in NAT mode. The Wireless IP (public IP) will not allow management access.  

Subnet Mask

Defines the address range of the connected IP network. For example, if IP Address is configured to 192.168.2.1 and Subnet Mask is configured to 255.255.255.0, the device wireless interface will belong to subnet 192.168.2.X.

Gateway

Configure the IP address of a computer on the current network that acts as a gateway. A gateway acts as an entrance and exit to packets from and to other networks.

Separate Management VLAN

Enabled:  A VLAN configuration establishes a logical group within the network. Each computer in the VLAN, regardless of initial or eventual physical location, has access to the same data based on the VLAN architecture.  For the network operator, this provides flexibility in network segmentation, simpler management and enhanced security.  When the SM is in NAT mode, the Separate Wireless Management VLAN configuration is applicable to management data.

Disabled:  When disabled, the SM does not have a unique management VLAN.

VLAN ID

Configure this parameter to include the device’s management traffic on a separate VLAN network.

VLAN Priority

ePMP radios can prioritize VLAN traffic based on the eight priorities described in the IEEE 802.1p specification.  Data VLAN Priority represents the VLAN Priority or Class of Service (CoS). Operators may use this prioritization field to give precedence to device management data.

This parameter only takes effect if the Separate Wireless Management VLAN parameter is enabled. Configure this parameter to set the value of the Priority code point field in the 802.1q tag for management traffic on the configured VLAN ID originating from the SM. The default value is 0.

Virtual Local Area Management (VLAN)

VLAN (Management + Data)

Enabled:  A VLAN configuration establishes a logical group within the network. Each computer in the VLAN, regardless of initial or eventual physical location, has access to the same data based on the VLAN architecture.  For the network operator, this provides flexibility in network segmentation, simpler management and enhanced security.  When the SM is in NAT or Router mode, the VLAN configuration is applicable to both management and user data.

Disabled:  When disabled, all IP management and data traffic is allowed to the device.

VLAN ID

Configure this parameter to include the device’s management and user traffic on a separate VLAN network.

VLAN Priority

ePMP radios can prioritize VLAN traffic based on the eight priorities described in the IEEE 802.1p specification.  Data VLAN Priority represents the VLAN Priority or Class of Service (CoS). Operators may use this prioritization field to give precedence to device user and management data.

This parameter only takes effect if the VLAN parameter is enabled. Configure this parameter to set the value of the Priority code point field in the 802.1q tag for traffic on the configured VLAN ID originating from the SM. The default value is 0.

IP Aliases

IP aliases

When Enabled, IP aliases allow the operator to associate more than one IP address to the Ethernet interface of the SM.

This configuration of multiple IP addresses for the SM’s Ethernet interface allows connections to multiple networks, often used as a mechanism for management access to the device from a convenient networking path.

IP Address

Configure the IP address for the alias.

Subnet Mask

Configure the subnet mask for the alias.

Description

Provide a description to easily identify the IP alias and its purpose/connected network.

Ethernet Port

Ethernet MTU

Maximum Transmission Unit; the size in bytes of the largest data unit that the device is configured to process. Larger MTU configurations can enable the network to operate with greater efficiency, but in the case of retransmissions due to packet errors, efficiency is reduced since large packets must be resent in the event of an error.

Ethernet Port

Disabled:  The primary Ethernet port is disabled

Enabled:  The primary Ethernet port is enabled

Port Setting

Manual:  The LAN Ethernet port speed and duplex mode can be manually configured.

Auto-negotiate:  The AP auto negotiates the LAN Ethernet port speed and duplex mode with the device connected to it.

Port Speed

With “Ethernet Port Configuration” set to Manual, the LAN Ethernet port speed can be forced to 1000 Mbps (only GPS Synchronized radio), 100 Mbps or 10 Mbps.

Port Duplex Mode

With “Ethernet Port Configuration” set to Manual, the LAN Ethernet port duplex mode can be forced to Full or Half.

Auxiliary Port

Disabled:  When disabled, the LAN Auxiliary port on the SM is shut down.

Enabled:  When enabled, LAN Auxiliary port on the SM is up and able to bridge traffic with the primary Ethernet port. Default value is Enabled.

Auxiliary Port Configuration

Manual:  The LAN Auxiliary port speed and duplex mode can be manually configured.

Auto-negotiate:  The AP auto negotiates the LAN Auxiliary port speed and duplex mode with the device connected to it.

Auxiliary Port Speed

With “Auxiliary Port Configuration” set to Manual, the LAN Auxiliary port speed can be forced to 1000 Mbps (only GPS Synchronized radio), 100 Mbps or 10 Mbps.

Auxiliary Port Duplex Mode

With “Auxiliary Port Configuration” set to Manual, the LAN Auxiliary port duplex mode can be forced to Full or Half.

Auxiliary Port PoE

Disabled:  When disabled, the LAN Auxiliary port on the SM will not provide proprietary PoE out. Default value is Disabled.

Enabled:  When enabled, LAN Auxiliary port on the SM will provide proprietary PoE out to power external PoE devices such as another ePMP radio or a PoE camera.

Advanced

Spanning Tree Protocol

Disabled:  When disabled, Spanning Tree Protocol (802.1d) functionality is disabled at the SM.

Enabled:  When enabled, Spanning Tree Protocol (802.1d) functionality is enabled at the SM, allowing for the prevention of Ethernet bridge loops.

DHCP Servers Below SM

Disabled: This blocks DHCP servers connected to the SM’s LAN side from handing out IP addresses to DHCP clients above the SM (wireless side).

Enabled:  This allows DHCP servers connected to the SM’s LAN side to assign IP addresses to DHCP clients above the SM (wireless side). This configuration is typical in PTP links.

NAT Helper For SIP

Disabled:  When disabled, the SM does not perform any deep packet manipulation on the SIP request packet from a SIP Client.

Enabled:  When enabled, the SM in NAT mode replaces the Source IP within the SIP request to the Wireless IP of the SM. Please note that this translation is often times handled by the SIP server so this option may not always be needed.

LLDP

The Link Layer Discovery Protocol (LLDP) is a vendor-neutral link layer protocol (as specified in IEEE 802.1AB) used by ePMP for advertising its identity, capabilities, and neighbors on the Ethernet/wired interface.

Disabled: ePMP does not Receive or Transmit LLDP packets from/to its neighbors.

Enabled: ePMP can Receive LLDP packets from its neighbors and Send LLDP packets to its neighbors, depending on the LLDP Mode configuration below.

 Note

LLDP packets are Received/Transmitted ONLY to the neighbors on the Ethernet Interface of the ePMP radio.

LLDP Mode

Receive and Transmit: ePMP sends and receives LLDP packets to/from its neighbors on the Ethernet/LAN interface.

Receive Only: ePMP receives LLDP packets from its neighbors on the Ethernet/LAN interface and discovers them.

Point-to-Point Protocol over Ethernet (PPPoE)

PPPoE

Point-to-Point Protocol over Ethernet: Used for Encapsulating PPP frames inside Ethernet frames.

Service Name

An optional entry to set a specific service name to connect to for the PPPoE session. If this is left blank the SM accepts the first service option that comes back from the Access Concentrator specified below, if any. This is limited to 32 characters.

Access Concentrator

An optional entry to set a specific Access Concentrator to connect to for the PPPoE session. If this is blank, the SM accepts the first Access Concentrator which matches the service name (if specified). This is limited to 32 characters.

Authentication

ALL: This means that CHAP authentication will be attempted first, then PAP authentication. The same password is used for both types.

CHAP: This means that CHAP authentication will be attempted.

PAP: This means that PAP authentication will be attempted.

Username

This is the CHAP/PAP username that is used. This is limited to 32 characters.

Password

This is the CHAP/PAP password that is used. This is limited to 32 characters.

MTU Size

Maximum Transmission Unit; the size in bytes of the largest data unit that the device is configured to process inside the PPPoE tunnel. This field allows the operator to specify the largest MTU value to use in the PPPoE session, if PPPoE MSS Clamping is Enabled. The user will be able to enter an MTU value up to 1492. However, if the MTU determined in LCP negotiations is less than this user-specified value, the SM uses the smaller value as its MTU for the PPPoE link.

Keep Alive Time

Configure the Keep Alive Time to allow the radio to keep the PPPoE session up after establishment. As an example, if this field is set to 5, the PPPoE client will send a keep alive message to the PPPoE server every 5 seconds. If there is no acknowledgement, it sends the ‘Keep alive’ message to the server 4 more times (for a total or 5 times) before tearing down the PPPoE session. Setting this to 12 will mean the keep alive message will be sent every 12 seconds and when there is no acknowledgement, the client will try for a total of 12 times every 12 seconds before tearing down the PPPoE session.

MSS Clamping

Disabled: The SM PPPoE session allows any MTU size determined by other devices in the PPPoE session during the LCP negotiations.

Enabled: The SM PPPoE session enforces a max MTU size determined by the PPPoE MTU Size setting for all devices in the PPPoE session during the LCP negotiations, unless one of the devices enforces a MTU setting that is smaller in value. 

3 Likes