D-Link DWS-3160-24TC DWS-3160 Series Web UI Reference Guide - Page 215

DWS-3160 Series Gigabit Ethernet Unified Switch Web UI Reference Guide The user may also select the desired time interval to update the statistics, between 1s and 60s, where "s" stands for seconds. The default value is one second. The fields that can be configured are described below: Parameter Description ServerIndex The identification number assigned to each RADIUS Accounting server that the client shares a secret with. InvalidServerAddr The number of RADIUS Accounting-Response packets received from unknown addresses. Identifier The NAS-Identifier of the RADIUS accounting client. ServerAddr The IP address of the RADIUS authentication server referred to in this table entry. ServerPortNumber The UDP port the client is using to send requests to this server. RoundTripTime The time interval between the most recent Accounting-Response and the AccountingRequest that matched it from this RADIUS accounting server. Requests The number of RADIUS Accounting-Request packets sent. This does not include retransmissions. Retransmissions The number of RADIUS Accounting-Request packets retransmitted to this RADIUS accounting server. Retransmissions include retries where the Identifier and AcctDelay have been updated, as well as those in which they remain the same. Responses The number of RADIUS packets received on the accounting port from this server. MalformedResponses The number of malformed RADIUS Accounting-Response packets received from this server. Malformed packets include packets with an invalid length. Bad authenticators and unknown types are not included as malformed accounting responses. BadAuthenticators The number of RADIUS Accounting-Response packets, which contained invalid authenticators, received from this server. PendingRequests The number of RADIUS Accounting-Request packets sent to this server that have not yet timed out or received a response. This variable is incremented when an Accounting-Request is sent and decremented due to receipt of an AccountingResponse, a timeout or a retransmission. Timeouts The number of accounting timeouts to this server. After a timeout the client may retry to the same server, send to a different server, or give up. A retry to the same server is counted as a retransmit as well as a timeout. A send to a different server is counted as an Accounting-Request as well as a timeout. UnknownTypes The number of RADIUS packets of unknown type which were received from this server on the accounting port. PacketsDropped The number of RADIUS packets, which were received from this server on the accounting port and dropped for some other reason. Click the Clear button to clear the current statistics shown. IP-MAC-Port Binding (IMPB) The IP network layer uses a four-byte address. The Ethernet link layer uses a six-byte MAC address. Binding these two address types together allows the transmission of data between the layers. The primary purpose of IP-MACport binding is to restrict the access to a switch to a number of authorized users. Authorized clients can access a switch's port by either checking the pair of IP-MAC addresses with the pre-configured database or if DHCP snooping has been enabled in which case the switch will automatically learn the IP/MAC pairs by snooping DHCP packets and saving them to the IMPB white list. If an unauthorized user tries to access an IP-MAC binding enabled port, the system will block the access by dropping its packet. For the DWS-3160 series of switches, active and inactive entries use the same database. The maximum number of entries is 510. The creation of authorized users can be manually configured by CLI or Web. The function is port-based, meaning a user can enable or disable the function on the individual port. 210