When the appliance is securely mounted on the rack, you are ready to connect the cables. Ethernet cables are connected first. Connect the power cable last.
The appliance uses standard (copper) Gigabit Ethernet (GigE, also called 1000BaseT), which is backward-compatible with Fast Ethernet (100 Mbps) and standard Ethernet (10 Mbps). Repeater 8500 and 8800 appliances optionally have a gigabit fiber card. CloudBridge 4000/5000 supports 10 Gbps SFP/SFP+ interfaces.
With Gigabit Ethernet, use only cables marked Category 5e or Category 6.
Fast Ethernet cabling issues and autonegotiation failures are the leading causes of installation problems. In addition, compression delivers higher performance if your LAN is running at gigabit speeds. Therefore, upgrading to Gigabit Ethernet when installing an appliance is a good practice.
Connector Polarity and Cross-Over Cables- Fast Ethernet has two connector polarities: computer and switch, comparable to DCE and DTE in RS-232. Connecting a computer to a switch requires a straight-through cable. Connecting a computer to a computer or a switch to a switch requires a cross-over cable (analogous to a null modem cable in RS-232). Routers generally, but not always, use the same connector polarity as computers.
The uplink port on a switch can be thought of as having a built-in cross-over cable.
Fast Ethernet Auto-Negotiation Failures- The Fast Ethernet specification has a flaw that leads to autonegotiation failures when one end of a connection is set to Auto and the other is forced to 100 Mbps full-duplex. The Auto connection usually sets itself to 100 Mbps half-duplex. This mismatched connection functions at low network loads but behaves erratically under high loads. This problem is built into the Fast Ethernet standard and is not a bug in the appliance.
To avoid this problem, set the units on each end of the cable to the same mode, whether Auto or a specific mode, such as 1000 Mbps Full Duplex. Citrix appliances default to Auto. This setting can be changed through the management interface, on the Configuration: Network Adapters page.
In a fail-to-wire installation, the issue extends to both appliance ports plus the ports they connect to. All four ports should be set to Auto, or all four should be forced to the same mode.
The autonegotiation problem can occur anywhere along the path between LAN and WAN, not necessarily on the connection to the appliance itself. It is not unusual to discover long-standing cases of this problem in installations where past performance expectations have been low. It should be suspected when the appliance reports high packet losses. If the mismatch occurs on a link directly connected to the appliance, the Alerts page reports a half-duplex connection.
Older Fast Ethernet Equipment- Older Fast Ethernet products do not support full-duplex operation at all. Older equipment is often less reliable with autonegotiation as well.
Cabling is the same as with Fast Ethernet.
Some appliances are shipped with more than one pair of accelerated LAN/WAN ports (Accelerated Pair A and Accelerated Pair B). On such appliances, assign the Management IP address to the subnet attached to Accelerated Pair A.
On an appliance equipped with an Ethernet bypass card, the motherboard Ethernet (Primary and Aux1) ports are not accelerated, and are shipped with plugs to prevent cables from being installed into them accidentally. If needed, you can use them for administrative purposes, or for a back channel for group mode or high availability mode. If your appliance does not have an Ethernet bypass card, the motherboard ports are an accelerated pair.
You can use either port of an accelerated pair as the WAN-facing port, but when you define your links, you must know which port that is. A good convention is to use apA.1 as the LAN port and apA.2 as the WAN port. If only one port is used (WCCP or virtual inline installations), use apA.1.
To test the cable connections of an appliance containing a bypass card, deployed in inline mode, verify that packets can be sent through the appliance, from the network connected to one side of the appliance to the network connected to the other side. You can use ping, ftp, or another convenient program. An appliance without a bypass card blocks traffic if not powered on, so skip this test for such an appliance.
Do not break the above topology with additional switches. Random switch arrangements are not supported. Each of the switches must be either a single, monolithic switch, a single logical switch, or part of the same chassis.
The spanning-tree protocol (STP) is not recommended on the router or switch ports attached to the Repeater appliances, because STP can increase the failover time by tens of seconds.
A CloudBridge 600 Series or Repeater 8500 series appliance has one power cable and Repeater 8800 series appliance has two power cables.