ZyXEL Communications ES-2024 Series, User Manual, Page: 252 / 282

Appendix A Product Specifications
ES-2024 Series User’s Guide
252
LLDP (Link Layer Discovery
Protocol)
The LLDP (Link Layer Discovery Protocol) is a layer 2 protocol.
It allows a network device to advertise its identity and capabilities on the
local network. It also allows the device to maintain and store information
from adjacent devices which are directly connected to the network
device. This helps an administrator discover network changes and
perform necessary network reconfiguration and management.
The device information is encapsulated in the LLDPDUs (LLDP data
units) in the form of TLV (Type, Length, Value). Device information
carried in the received LLDPDUs is stored in the standard MIB.
OAM (Operations,
Administration and
Maintenance)
Ethernet OAM as described in IEEE 802.3ah is a link monitoring
protocol. It utilizes OAM Protocol Data Units or OAM PDU’s to transmit
link status information between directly connected Ethernet devices.
Both devices must support IEEE 802.3ah. Because link layer Ethernet
OAM operates at layer two of the OSI (Open Systems Interconnection
Basic Reference) model, neither IP or SNMP are necessary to monitor
or troubleshoot network connection problems.
Table 102 Firmware Specifications
FEATURE SPECIFICATION
Default IP Address 192.168.1.1
Number of IP Addresses
Configurable
64
Default Subnet Mask 255.255.255.0 (24 bits)
Administrator User Name admin
Default Password 1234
Number of Login Accounts
Configurable on the Switch
4 management accounts configured on the Switch.
Authentication via RADIUS and also available.
Bridging 8K MAC addresses (2 way set associative)
Static MAC address forwarding 256 entries
Broadcast storm control per port
Automatic address learning and aging
Aging time from 10 to 3000 sec default 300 sec
Switching 8.8 Gbps, non-blocking
Maximum frame size: 1522 bytes including tag/CRC
Store and forward
QoS 802.1p
4 priority queue with SP/WRR
Port-based rate control in 64Kbps for both ingress and egress
IGMP snooping
DSCP to 802.1p priority mapping
Table 101 Feature Descriptions (continued)
FEATURE DESCRIPTION