HP Brocade 8/24c HP Virtual Connect: Common Myths, Misperceptions, and Objecti - Page 19

upgrade, repair, and move server blades within the data center while minimizing the negative effects on the LANs, SANs, and OS images. Cisco VFrame Data Center is a higher level management product that interfaces with other data center device management tools and products such as Virtual Connect. In other words, Cisco VFrame Data Center scripting capability could be used to control device management tools such as Virtual Connect via its CLI. Virtual Connect technology would enhance a Cisco VFrame Data Center customer's experience by minimizing LAN and SAN configuration changes that result from Cisco VFrame Data Center's resource orchestration and deployment tasks since server changes within the VC Domain can be transparent to the LAN and SAN. #37: VC Ethernet can't be connected to Cisco 6500 switches using Virtual Switching System (VSS) Incorrect: Virtual Connect Ethernet can connect to a Cisco VSS stack the same as VC Ethernet can connect to any other external Ethernet switch. Both Cisco 6500s in the VSS stack look like a single Cisco 6500 switch - transparent to Virtual Connect. VC Ethernet ports (from the same VC module) in a port channel (LAG) can be connected to two different Cisco 6500s in a VSS stack and the port channel operates as a single port channel (as if the ports are connected between a single VC module and a single Cisco 6500) and traffic is load balanced across all ports. Should either of the Cisco 6500s or 6500 modules fail, the EtherChannel on the VC module will still have connectivity through the alternate Cisco 6500 switch/module. #38: VC Ethernet does not support Unidirectional Link Detection (UDLD) Correct: UDLD is necessary to prevent a loop for switch ports using Spanning Tree to manage Layer 2 redundancy. VC, like hypervisors such as VMware, doesn't participate in the data center Spanning Tree domain. Therefore, UDLD provides no benefit to VC Ethernet or to hypervisors. #39: VC Ethernet only provides port counters on uplinks Incorrect: VC provides port statistics for all Ethernet ports - uplinks, downlinks, and stacking links. The counters VC provides for these ports are the following: Table 5. Supported SNMP objects IfInOctets IfInUcastPkts IfInNUcastPkts IfInDiscards IfInErrors IfInUnknownProtos IfOutOctets IfOutUcastPkts IfOutNUcastPkts IfOutDiscards IfOutErrors IfOutQLen IpInReceives IpInHdrErrors IpForwDatagrams IpInDiscards Dot1dTpPortOutFrames Dot1dTpPortInDiscards EtherStatsStatsDropEvents EtherStatsStatsMulticastPkts EtherStatsStatsBroadcastPkts EtherStatsStatsUndersizePkts EtherStatsStatsFragments EtherStatsStatsPkts64Octets EtherStatsStatsPkts65to127Octets EtherStatsStatsPkts128to255Octets EtherStatsStatsPkts256to511Octets EtherStatsStatsPkts512to1023Octets EtherStatsStatsPkts1024to1518Octets EtherStatsStatsOversizePkts EtherStatsStatsJabbers EtherStatsStatsOctets 19