User guide

September 2009
OmniSwitch 6400/6850/6855/9000/9000E------ Release 6.4.2.R01 Page 41 of 79
Protocol Independent Multicast Source-Specific Multicast (PIM-SSM) is a highly-efficient extension
of PIM. SSM, using an explicit channel subscription model, allows receivers to receive multicast traffic
directly from the source; an RP tree model is not used. In other words, a Shortest Path Tree (SPT)
between the receiver and the source is created without the use of a Rendezvous Point (RP).
Policy Server Management
Policy servers use Lightweight Directory Access Protocol (LDAP) to store policies that are configured
through Alcatel-Lucent’s PolicyView network management application. PolicyView is an OmniVista
application that runs on an attached workstation.
The Lightweight Directory Access Protocol (LDAP) is a standard directory server protocol. The LDAP
policy server client in the switch is based on RFC 2251. Currently, PolicyView is supported for policy
management.
Policy Based Routing (Permanent Mode)
Policy Based Routing may be used to redirect traffic to a particular gateway based on source or
destination IP address, source or destination network group, source or destination TCP/UDP port, a
service or service group, IP protocol, or built-in source port group.
Traffic may be redirected to a particular gateway regardless of what routes are listed in the routing
table. Note that the gateway address does not have to be on a directly connected VLAN; the address
may be on any network that is learned by the switch.
Port Mapping (Private VLANs)
Port Mapping is a security feature that controls peer users from communicating with each other. A Port
Mapping session comprises a session ID and a set of user ports and/or a set of network ports. User
ports within a session cannot communicate with each other and can only communicate via network
ports. In a Port Mapping session with user port set A and network port set B, ports in set A can only
communicate with ports in set B. If set B is empty, ports in set A can communicate with rest of the
ports in the system.
A port mapping session can be configured in unidirectional or bidirectional mode. In the unidirectional
mode, the network ports can communicate with each other within the same session. In the bidirectional
mode, the network ports cannot communicate with each other. Network ports of a unidirectional port
mapping session can be shared with other unidirectional sessions, but cannot be shared with any
sessions configured in bidirectional mode. Network Ports of different sessions can communicate with
each other.
Port Monitoring
The Port Monitoring feature allows you to examine packets to and from a specific Ethernet port (either
ingress or egress). You can select to dump captured data to a file, which can be up to 140K. Once a file
is captured, you can FTP it to a Protocol Analyzer or PC for viewing. The OmniSwitch 9000/9000E
supports one session per switch.
By default, the switch will create a data file called “pmonitor.enc” in flash memory. When the 140K
limit is reached the switch will begin overwriting the data starting with the oldest captured data.
However, you can configure the switch so it will not overwrite the data file. In addition, you can
configure additional port monitoring files as long as you have enough room in flash memory. You
cannot configure port mirroring and port monitoring on the same NI module.
Power over Ethernet (PoE)
The Power over Ethernet (PoE) software is supported on the various OmniSwitch platforms. PoE
provides inline power directly from the switch’s Ethernet ports. From these RJ-45 ports the devices
receive both electrical power and data flow.