GLC-ZX-SMD Overview Cisco GLC-ZX-SMD is a 1000BASE-ZX SFP for Long-Reach Single-Mode Fiber. The 1000BASE-ZX SFP operates on standard single-mode fiber-optic link spans of up to approximately 70 km in length. The SFP provides an optical link budget of 21 dB, but the precise link span length depends on multiple factors such as fiber quality, number of splices, and connectors. When shorter distances of single-mode fiber (SMF) are used, it might be necessary to insert an inline optical attenuator in the link to avoid overloading the receiver. A 10-dB inline optical attenuator should be inserted between the fiber-optic cable plant and the receiving port on the SFP at each end of the link whenever the fiber-optic cable span loss is less than 8 dB. SFP Port Cabling Specifications Product Wavelength (nm) Fiber Type Core Size (mu,m) Modal Bandwidth (MHz* Km)*** Operating Distance (m) 1000BASE-SX 850 MMF 62.5 160 (FDDI-grade) 220 (722 ft) 62.5 200 (OM1) 275 (902 ft) 50 400 (400/400) 500 (1,640 ft) 50 500 (OM2) 550 (1,804 ft) 50 2000 (OM3) 1000 (3281 ft) 1000BASE-LX/LH 1310 MMF* 62.5 500 550 (1,804 ft) 50 400 550 (1,804 ft) 50 500 550 (1,804 ft) SMF -** - 10,000 (32,821 ft) 1000BASE-EX 1310 SMF -** - 40,000 (131,234 ft) 1000BASE-ZX (GLC-ZX-SMD) 1550 SMF - - Approximately 70 km depending on link loss 1000BASE-BX-U 1310 SMF -** - 10,000 (32,821 ft) 1000BASE-BX-D 1490 SMF -** - 10,000 (32,821 ft) Our stock support good price C1000-48P-4G-L C9500-NM-8X CAB-SPWR-30CM C1000-48T-4G-L C9800-F-X-K9 C9200L-STACK-KIT WS-C2960X-24TS-LL N9K-C93180YC-FX PWR-C4-950WAC-R WS-C2960X-24PSQ-L N3K-C3172PQ-XL C9200-NM-4G WS-C2960X-24PS-L N2K-C2348UPQ C9200-NM-4X WS-C2960X-48TS-L AIR-AP1832I-H-K9 C9300-NM-4G WS-C2960L-24PS-AP AIR-AP2802I-H-K9 C9300-NM-8X WS-C2960L-16TS-LL C9115AXI-H GLC-LH-SMD WS-C2960L-8TS-LL C9120AXI-H SFP-10G-SR WS-C3560-48FS-S AIR-AP1562I-H-K9 SFP-10G-LR WS-C2960X-24PS-L AIR-AP1562D-H-K9 SFP-10G-SR-S C9200L-48P-4X-E C9800-L-C-K9 SFP-10G-LR-S C9200L-48P-4G-E C9800-L-F-K9 GLC-TE C9200L-24T-4G-E AP505 SFP-H10GB-CU2M C9300-24T-A AP515 MA-CBL-40G-3M C9300-48T-A CP-3905 GLC-LH-SMD= C9300-24S-A CP-7821-K9 ISR4331/K9 C9300-48S-A CP-8832-MIC-WIRED ISR4331/K9 RF C9300-48P-E CS-MIC-TABLE-J FPR2110-ASA-K9 C9300-24P-E AIR-AP3802I-E-K9 FPR2110-ASA-K9 C9300L-24T-4G-E C1111-8P FPR2120-ASA-K9 C9300L-48T-4G-E PWR-C5-125WAC FPR2130-ASA-K9 C9300-NM-8X PWR-C5-1KWAC C9200-NM-4G= C9400-LC-24S PWR-C6-125WAC C9200-NM-4G= C9400-LC-48S STACK-T1-50CM C9200L-24P-4G-CE C9500-24Y4C-A STACK-T1-1M C9200L-24P-4G-CE C9500-48Y4C-A STACK-T1-3M C9200L-48P-4G-E
