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10 CHAPTER 3: RELEASE ISSUES FOR INTERFACE MODULES
Ethernet ■ If the autonegotiation feature for a 100 Mbps Ethernet link does not
function properly, disable autonegotiation and manually set the port
speed and duplex mode (
half-duplex or full-duplex). Also, on a
1000 Mbps link, autonegotiation must match on both sides of the
link.
Link Aggregation
■ You cannot create more than one trunk per slot.
■ When trunking to another Switch 4005 from a 2-port Gigabit module,
we recommend using the same module type on both ends of the link
in to obtain optimal trunking performance.
Bridging
■ Bridged IP multicast frames are not counted in the bridge statistics.
IGMP
■ The Switch will not act as an IGMP Querier. The Switch will not send
IGMP Queries.
■ An IGMP Server must be a member of the IGMP Group for traffic to
be forwarded to clients.
Routing Limitation
■ You cannot route IP packets over a blocked port.
Priority Tags
■ A tagged VLAN egress port adds COS priority tags when an untagged
frame is forwarded to an untagged port on the same VLAN.
Roving Analysis
■ Remove a static address from a port before you use it as a roving
analysis port. If the Bridge Table has a static address for a given port,
and the port is then designated as the “Analyzer” port for RAP, the
static address is still functional, which results in the forwarding of
unwanted packets through the Analyzer port.
■ If the module drops packets, these dropped packets are not mirrored
to an analyzer port.
■ Mirroring between ports with different VLAN configurations is not
supported.
■ Trunked ports cannot be configured as analyzer or monitor ports.
■ Higher speed Gigabit ports can mirror lower speed ports, but lower
speed ports cannot mirror higher speed ports.