Cisco 7600 SIP 200 Hardware Installation Guide - Page 117

Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters IPSec VPN SPA Overview 2. A mode-conditioning patch cord is required. When using the SFP-GE-L with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord between the SFP module and the MMF cable on both the transmit and the receive ends of the link when link distances are greater than 984 ft (300 m). We do not recommend using the SFP-GE-L and MMF with no patch cord for very short link distance (tens of meters). The result could be an elevated bit error rate (BER). 3. Dispersion-shifted single-mode fiber-optic cable. Note The 1000BASE-ZX SFP modules provide an optical power budget of 21.5 dB. You should measure your cable plant with an optical loss test set to verify that the optical loss of the cable plant (including connectors and splices) is less than or equal to 21.5 dB. The optical loss measurement must be performed with a 1550-nm light source. IPSec VPN SPA Overview The following sections describe the IPSec VPN SPA: • IPSec VPN SPA LEDs, page 3-71 IPSec VPN SPA LEDs The IPSec VPN SPA has one LED, as shown in Figure 3-52. Figure 3-52 IPSec VPN SPA Faceplate 1 STATUS 129498 VPN SERVICES SPA 1 STATUS LED The IPSec VPN SPA LED is described in Table 3-43. Table 3-43 IPSec VPN SPA LED LED Label STATUS Color Off State Off Meaning SPA power is off. SPA-IPSEC-2G OL-5052-14 Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide 3-71