Using Packet Brokers
AppResponse 11 appliances can select from a set of supported packet brokers. The following Gigamon packet brokers are supported:
◼ Gigamon Header (available on GigaSmart blades), slicing supported
◼ Gigamon Trailer (available on GigaSmart blades), slicing supported
◼ Gigamon X12 (available on Gigamon H-series)
◼ cPacket TS only
◼ cPacket TS and Slice, slicing supported
◼ Anue, slicing supported
◼ Arista (three modes of operation, automatically detected)
AppResponse 11 virtual edition only supports the selection of the Gigamon Header packet broker.
The use of a packet broker is a global option across all interfaces and affects all monitored traffic.
When a packet broker is enabled or modified, the new setting is propagated automatically, with no restart needed.
When using a packet broker, an unexpected number of dropped packets may indicate a problem with the packet broker configuration.
Using a packet broker requires the following:
◼ The correct packet broker is selected in the web UI. If the wrong packet broker is selected, timestamps may not be processed successfully, causing packets to be dropped. If a packet broker is selected but no packet broker is in use, timestamp processing also can result in dropped packets.
◼ Timestamps are configured correctly in the packet broker. AppResponse 11 automatically drops packets that are out of range (too early or too late) when checked against the system clock or previous packets.
Observe these additional considerations:
◼ Make sure the packet broker clock is not off relative to AppResponse 11’s clock; AppResponse 11 tolerates an error of up to five minutes.
◼ Make sure you are not sending line rate traffic to the packet broker. That will cause packets to be dropped between the broker and AppResponse 11.
To use a packet broker
1. Go to Administration > General Traffic Settings: Capture Jobs/Interfaces, and click the Monitoring Interfaces tab.
2. Under Packet Broker Settings, select one of the supported packet brokers from the drop-down list in the Packet Broker field. By default, NONE is selected.
The AppResponse 11 virtual edition only supports the Gigamon Header packet broker.
Interface Speed and Duplex Settings
The speed and duplex settings available are listed by interface type below:
◼ 1 G Copper Interface
– AUTONEG
Autonegotiates 10 Mbps and 100 Mbps at half-duplex or full-duplex.
Autonegotiates 1000 Mbps at full-duplex.
– AUTONEG_10
Autonegotiates 10 Mbps at half-duplex or full-duplex.
– AUTONEG_100
Autonegotiates 100 Mbps at half-duplex or full-duplex.
– AUTONEG_1000
Autonegotiates 1000 Mbps at full-duplex.
– 10_FD, 10_HD, 100_FD, 100_HD, 1000_FD
Sets link speed and duplex at these specified values with no autonegotiation.
◼ 1 G Fiber Interface
– 1000_FD
Sets 1000 Mbps at full-duplex with no autonegotiation.
◼ 10 G Fiber and Virtual
– 10000_FD
Sets 10000 Mbps at full-duplex with no autonegotiation.