Chapter 9 Nortel VPN Router 5000 option installation 153Nortel VPN Router Installation — Hardware OptionsThe 1000BASE-T (1000 MT), 1000BASE-SX, and VPN Router SecurityAccelerator cards are high-speed cards; most other option cards are low-speed(32-bit/33-MHz) cards. To maximize system performance, reserve slots 1, 2, and6 for high-speed cards, and install low-speed cards in slots 3, 4, and 5. (The SSLVPN Module 1000 must be installed in slot 1.)If you install a slower (32-bit/33-MHz) card in a slot attached to a faster bus, thespeed of the whole bus is reduced to the width and speed of the slower card. Forexample, if you install a 1000BASE-T (1000 GT) Ethernet interface card in slot 1,a 1000BASE-T (1000 MT) card installed in slot 2 runs at 32-bit/33-MHz.Table 14 lists all option cards that you can install in the VPN Router 5000.Table 15 on page 154 provides guidelines for the placement of the cards in thechassis.Table 14 Supported option cards for the Nortel VPN Router 5000Option cardMaximumnumber RestrictionsSSL VPN Module 10001 1 Install this card in slot 1 only.VPN Router Security Accelerator 22You can install two cards of either type or onecard of each type. See Table 15 for informationabout slot placement.Hardware Accelerator10/100BASE-TX Ethernet interface 5 If possible, install in slots 3, 4, and 5.1000BASE-T (1000 GT) Ethernet interface3 5 If possible, install in slots 3, 4, and 5.1000BASE-T (1000 MT) interface (copper) 42Install two 1000BASE-T (1000 MT) cards, two1000BASE-SX cards, or one card of each type.See Table 15 for more information about slotplacement.1000BASE-SX interface (fiber) 556/64K channel service unit/digital serviceunit (CSU/DSU) WAN interface 65 If possible, install in slots 3, 4, and 5.Asymmetric digital subscriber line (ADSL)WAN interface75 If possible, install in slots 3, 4, and 5.Integrated Services Digital Network (ISDN)BRI S/T or U interface 85 If possible, install in slots 3, 4, and 5.T1 CSU/DSU WAN interface (full-height) 5 If possible, install in slots 3, 4, and 5. For E1support, you must install the half-height interfacecard.T1/E1 CSU/DSU WAN interface(half-height)5Quad T1/E1 CSU/DSU WAN interface 9 3 If possible, install in slots 3, 4, and 5.
