154Table 209 LED descriptionLED DescriptionESMx • Green: ANDE module is in the slot and is operating normally.• Yellow: ANDE module is in the slot but cannot be accessed by the router.NOTE:"x" means the number of the slot the ESM LED is in.Installing and removing an ESM-ANDE moduleFor more information about installing and removing an ESM-ANDE module, see the installationguides for the H3C MSR router models.ESM-SNDEIntroductionThe standard network data encryption engine (SNDE) supports IPsec and hardware expedited IPdata packet encryption, thus providing encryption with high performance and reliability.Installed with an ESM-SNDE module, the main board of your router can implement VPN withencryption provided by the ESM-SNDE module in addition to IP packet forwarding.Interface specificationsTable 210 Interface specificationsItem DescriptionProtocol supported IPsecHardware algorithm key algorithm (DES, 3DES, AES, QC5, Blowfish, Cast-128 and SkipJack)Authentication algorithm (HMAC-MD5-96, HMAC-SHA-1-96)Interface LEDsThere is no LED on the ESM-SNDE module. Display of the status of the module is implementedthrough the ESM interface LED on the main board of the router.The following table describes the LEDs on the SNDE panel.Table 211 LED descriptionLED DescriptionESMx • Green: SNDE module is in the slot and is operating normally.• Yellow: SNDE module is in the slot but cannot be accessed by the router.NOTE:"x" means the number of the slot the ESM LED is in.
