Layer 3 – 4.2.0.4 - Dell Networking 7048 Release Note

MAC Filtering
Description
Maximum number of unicast static
filtering entries
Maximum number of multicast static
filtering entries
Static multicast MAC address table
entries do not show with show command
LACP
Description
LAGs Supported
IGMP Snooping
Description
No command to identify external IGMP
querier
Multicast VLAN Registration
Description
MVR is not supported on LAGs
Layer 3 – 4.2.0.4
IP MTU
Description
IP VLAN MTU Support
IPv6 MTU
Description
IPv6 Fragmentation Support
70
User Impact
The maximum number of unicast MAC and source port filtering entries is 20.
The maximum number of multicast MAC and source port filtering entries is 20.
The maximum number of multicast MAC and destination port filtering entries is
256.
Users must enable MAC filtering using the mac addr-table multicast filtering
command to enable filtering. Static MAC multicast forwarding entries will then
be shown.
User Impact
Number of LAGs supported:
128 total LAGs of which up to 72 may be dynamic LAGs. Up to 144 ports can be
assigned to dynamic LAGs. The PCM8024 supports 12 LAGs with up to 24 ports
assigned to dynamic LAGs.
User Impact
There is no specific command to identify an external IGMP querier.
Administrators can use the show ip igmp snooping querier detail command or
the show ip igmp snooping querier vlan command to display information about
snooping queriers.
User Impact
Use of MVR is restricted to physical interfaces.
User Impact
Operators may see jumbo packets discarded when operating in a routed IP
environment. Administrators are advised when operating in a L3 routing
configuration with jumbo frames to adjust both the link MTU and the VLAN IP
MTU.
User Impact
The switch is not fragmenting the datagram and forwards even when the IP MTU
of the forwarding interface is set to a lower value (than the datagram size).
IPv6 frames are not allowed to be fragmented. IPv6 frames forwarded in silicon
can be up to the lesser of 9216 octets or the link MTU. These frames are
forwarded by the switching silicon with no effect. If a frame exceeds the link
MTU for a port, it is discarded silently.
If a packet is sent to the CPU or originated on the CPU and it exceeds the IPv6
MTU, then the packet still will not be fragmented. Instead, an ICMP error
message is returned to the sender. The maximum IPv6 MTU is 1500 bytes.
Administrators are advised that when operating in an L2 switching
configuration with jumbo frames, to only adjust the link MTU and let the
System Firmware Version 5.1.0.1