| Physical ports |
| Port configuration | 48 10/100/1000BASE-T and 4 1/10GbE SFP+ ports |
| Management Port | Out-of-band management port: |
| 1 x RJ-45 (10/100/1000BASE-T) |
| 1 x SFP (1000BASE-X) |
| Console Port | 1 (RJ-45) |
| USB | USB 2.0 |
| Performance |
| Switching capacity | 176Gbps |
| Maximum forwarding rate | 131Mpps |
| Major Components |
| ASIC | Broadcom StrataXGS Hurricane2 |
| CPU | Intel ATOM Processors |
| Memory | 4GB DDR3/ECC |
| Storage | 8GB Micro SD |
| CPU |
| Storage | 8GB Micro SD |
| Layer 2 Features |
| Switching Mode | Store-and-Forward |
| Spanning Tree | 802.1w |
| 802.1s |
| Auto Edge |
| VLAN | IEEE 802.1Q Tagged Base |
| Port-Based |
| QinQ (802.1ad) |
| 802.3x Flow Control (Pause Frames) | Â |
| Storm Control | Broadcast |
| Unknown Multicast |
| DLF (Unknown Unicast) |
| IGMP Snooping | v1/v2/v3 |
| v1/v2 Querier |
| Immediate Leave |
| Link Aggregation | 802.3ad with LACP |
| Static Trunk |
| Unicast/Multicast Traffic Balance over Trunking Port |
| LACP Fallback |
| Link State Tracking | Â |
| Port Backup | Â |
| Private VLAN | Â |
| QoS Features |
| Scheduling for priority queue | WRR, Strict, Hybrid |
| COS | 802.1p |
| IP TOS precedence |
| DSCP |
| DiffServ | Â |
| iSCSI optimization | Â |
| Security Features |
| Static and dynamic port security (MAC-based) | Â |
| 802.1x (MD5, MS-CHAPv2) | MAC-based |
| Port-based |
| Auto VLAN assignment |
| Guest VLAN |
| Unauthenticated VLAN |
| Access Control List | L2/L3/L4 |
| IPv4/IPv6 ACL | L3/L4 |
| RADIUS/TACACS+ | Authentication, Authorization, Accounting |
| SSH V2.0 | Â |
| User name and password | Local Authentication |
| Remote Authentication via RADIUS/TACACS+ |
| AAA |
| Management IP filtering | SNMP |
| Telnet |
| SSH |
| IP Source Guard | Â |
| Dynamic ARP inspection (DAI) | Â |
| DHCP snooping | IPv4 |
| IPv6 |
| Control Plane Policing / CoPP | Â |
| Service Prohibit Access | Â |
| Role Base Access Control (RBAC) | Â |
| Management Features |
| Industrial standard command-line interface | Â |
| CLI filtering | Â |
| CLI schedule | Â |
| SSH | Â |
| Software Update | TFTP |
| SCP |
| SFTP |
| Configuration download/upload | TFTP |
| SCP |
| SFTP |
| Dual Images | Â |
| SNMP v1/v2c/v3 | Â |
| SNMP inform v2 | Â |
| RMON1 Groups: 1, 2, 3, 9 | Â |
| DHCP client | Â |
| DHCP relay (VxLAN environment supported) | Â |
| Remote PING | Â |
| Traceroute | Â |
| NTPv4 | Â |
| LLDP | 802.1ab |
| 802.MED |
| Potential error detection |
| UDLD | Â |
| Port mirroring | SPAN |
| RSPAN |
| sFlow v5 | Â |
| Email alerting | SMTP |
| Error-Disable Recovery | Â |
| SNTP | Â |
| IPv6 Management |
| IPv4/IPv6 Dual Protocol Stack | Â |
| ICMPv6 | Â |
| ICMPv6 Redirect | Â |
| IPv6 Neighbor Discovery | Â |
| Stateless Autoconfiguration | Â |
| Manual Configuration | Â |
| DHCPv6 client/relay | Â |
| SNMP over IPv6 | Â |
| SSH over IPv6 | Â |
| IPv6 DNS Resolver | Â |
| IPv6 RADIUS | Â |
| IPv6 TACACS+ | Â |
| IPv6 Syslog | Â |
| IPv6 SNTP | Â |
| Automation |
| Auto installation | Â |
| Mechanical |
| Dimension (HxWxD) | 43.2x440x394mm |
| Weight | T1048-LY4R 1 + 1 PSU: 6.04kg (NET) |
| T1048-LY4R Single PSU: 5.57kg (NET) |
| Environmental Specifications |
| Operating temperature | 0~45°C |
| Operating humidity | 90% maximum relative humidity |
| Power |
| PSU | 100~240VAC, 50/60Hz, 120W*2 (1+1) |
| Power consumption | Idle Mode: 62W |
| Normal Mode: 68W |
| Safety |
| Safety | UL, cUL, CB |
| EMC |
| EMC | CE, FCC, VCCI |
| RoHS |
| RoHS | Reduction of Hazardous Substances (RoHS) 6 |
| Supported Optics and Cables |
| Supported Optics and Cables | 1000BASE-T: Cat 5e |
| DAC cable (SFP+): 0.5m, 1m, 1.5m, 2m, 2.5m, 3m, and 5m |
| AOC cable (SFP+, 850nm, MMF): 1m, 3m, 7m, 10m, 20m, and 100m |
| 1G optic (SFP, LC, 850nm, MMF): 1000BASE-SR optic |
| 1G optic (SFP, LC, 1310nm, SMF): 1000BASE-LR optic |
| 10G optic (SFP+, LC, 850nm, MMF): 10GBASE-SR optic |
| 10G optic (SFP+, LC, 1310nm, SMF): 10GBASE-LR optic |
| Ordering Information |
| Ordering Information | T1048-LY4R (1LY4BZZ0STK) (Front to Back, 1+1 PSU, rail kit included) |
| T1048-LY4R(1LY4BZZ0STL) (Back to Front, 1+1 PSU, rail kit included) |
| T1048-LY4R (1LY4BZZ0STM) (Front to Back, single PSU, rail kit included) |
| T1048-LY4R(1LY4BZZ0STN) (Back to Front, single PSU, rail kit included) |
| PSU – (1HYQZZZ014D)(F-2-B, AC, 120W) |