Juniper JUNOS OS 10.4 - RELEASE NOTES Release Note page 10

JUNOS OS 10.4 Release Notes
10
IPv6 statistics from IQ2 and IQ2E PICs on M320 routers with Enhanced III FPCs and
T Series routers—Support statistical accounting for IPv6 traffic traversing the IQ2 and
IQ2E PICs on M320 routers with Enhanced III FPCs and T Series routers.
For IQ2 and IQ2E PIC interfaces, the IPv6 traffic that is reported will be the total statistics
(sum of local and transit IPv6 traffic) in the ingress and egress direction. The IPv6
traffic in the ingress direction will be accounted separately only if the IPv6 family is
configured for the logical interface.
Statistics are maintained for routed IPv6 packets in the egress direction.
Byte and packet counters are maintained in the ingress and egress direction.
Differences in IPv6 statistics for IQ2 interfaces and all other interfaces are as follows:
IQ2 and IQ2E PIC interfaces report the total statistics for the IPv6 traffic. For other
interfaces, the transit statistics are reported.
IQ2 and IQ2E PIC interfaces report all IPv6 traffic received on the logical interface.
For all other interfaces, only the routed traffic is accounted.
IQ2 and IQ2E PIC interfaces report IPv6 statistics for the Layer 2 frame size. For all
other interfaces, the Layer 3 packet size is accounted.
The IPv6 statistics can be viewed by logging in to the individual IQ2 PIC or IQ2E PIC, or
by using the CLI.
Local statistics are not accounted separately.
To display total IPv6 statistics for IQ2 and IQ2E PICs, use the
command.
NOTE: The reported IPv6 statistics do not account for the traffic manager
drops in egress direction or the Packet Forwarding Engine/traffic manager
drops in the ingress direction. Transit statistics are not accounted separately
because the IQ2 and IQ2E PICs cannot differentiate between transit and
local statistics.
[Network Interfaces]
100-Gigabit Ethernet PIC interoperability with VLAN steering—Supports
interoperability with similar PICs from other vendors using a VLAN steering forwarding
option. Previously, the PICs required interconnection to the same model PIC.
Interoperability with interfaces from other vendors was not supported. Junos OS Release
10.4 introduces a new VLAN steering algorithm to configure 100-Gigabit Ethernet PIC
interoperation with similar interfaces from other vendors.
Two packet forwarding modes exist under the
mode, for proprietary connection of two Juniper Networks 100-Gigabit Ethernet PICs,
uses the Ethernet header SA MAC address multicast bit to steer the packets to the
appropriate PFE. VLAN steering mode allows the PIC to connect to non-Juniper
Networks equipment. On ingress, the PIC compares the outer VLAN ID against a
show interfaces extensive
statement. SA multicast
forwarding-mode
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