show forwarding-options enhanced-hash-key
Syntax
show forwarding-options enhanced-hash-key
Description
Display information about which packet fields are used by the hashing algorithm to make hashing decisions.
You can configure the fields that are inspected by the hashing
algorithm to make hashing decisions for traffic entering a LAG bundle
using the forwarding-options enhanced-hash-key statement.
Required Privilege Level
view
Output Fields
Table 1 lists
the output fields for the show forwarding-options enhanced-hash-key command. Output fields are listed in the approximate order in which
they first appear. Output fields vary by platform.
Field Name |
Field Description |
|---|---|
Hash-Mode |
Current hash mode: Layer 2 header or Layer 2 payload. |
Protocol |
Indicates whether the Protocol field is or is not used by the hashing algorithm: Yes or No. |
Destination L4 Port |
Indicates whether the Destination L4 Port field is or is not used by the hashing algorithm: Yes or No. |
Source L4 Port |
Indicates whether the Source L4 Port field is or is not used by the hashing algorithm: Yes or No. |
Destination IPv4 Addr |
Indicates whether the Destination IPv4 Addr field is or is not used by the hashing algorithm: Yes or No. |
Source IPv4 Addr |
Indicates whether the Source IPv4 Addr field is or is not used by the hashing algorithm: Yes or No. |
Incoming port |
Indicates whether the incoming port number (interface) is or is not used by the hashing algorithm. Yes or No Note:
When passive monitoring is enabled on a QFX10000 Series
switch interface, the |
Vlan id |
Indicates whether the Vlan ID field is or is not used by the hashing algorithm: Yes or No. |
Inner-Vlan ID |
Indicates whether the inner Vlan field is or is not used by the hashing algorithm: Yes or No. |
Next Hdr |
Indicates whether the Next Hdr field is or is not used by the hashing algorithm: Yes or No. |
Destination IPv6 Addr |
Indicates whether the Destination IPv6 Addr field is or is not used by the hashing algorithm: Yes or No. |
Source IPv6 Addr |
Indicates whether the Source IPv6 Addr field is or is not used by the hashing algorithm: Yes or No. |
Ether Type |
Indicates whether the Ether Type field is or is not used by the hashing algorithm: Yes or No. |
Destination MAC Address |
Indicates whether the Destination MAC Address field is or is not used by the hashing algorithm: Yes or No. |
Source MAC Address |
Indicates whether the Source MAC Address field is or is not used by the hashing algorithm: Yes or No. |
Symmetric-hashing |
Indicates whether symmetric hashing is set for |
Load Balancing Method for ALB |
Indicates the load balancing method for adaptive load balancing (ALB): flowlet or per-packet. The load balancing method is flowlet by default, and can be configured using the fabric-load-balance statement. |
Load Balancing Method for DLB (QFX5120-32C, QFX5120-48Y, and QFX5220 switches) |
Indicates various Dynamic Load Balancing (DLB) modes:
Refer Dynamic Load Balancing for more details. |
Fabric Link Scale |
Indicates the fabric link scale, in mbps. |
Inactivity Interval |
Indicates the fabric load balance inactivity interval, in microseconds (us). The inactivity interval is 16 microseconds by default, and can be configured using the inactivity-interval statement. |
Hash Region Size/Trunk |
Indicates the hash region size, in buckets per fabric trunk. |
Seed |
A hash seed value, between 0 and 4294967295. If a hash-seed value is not configured it is automatically assigned on the QFX10000 Series switches. A hash-seed prevents traffic polarization to same links on the next hop QFX switch when two are connected with LAG/ECMP. |
Key |
Indicates whether the GRE key field is or is not used by the hashing algorithm: Yes or No. |
Protocol |
Indicates if a Generic Router Encapsulation (GRE) endpoint over routes was dynamically learned by a routing protocol such as RIP or OSPF. |
MPLS Enabled |
Indicates if MPLS is enabled under L2 switching. |
VXLAN VNID |
A 24-bit virtual network identifier (VNID) that uniquely identifies the Virtual Extensible Local Area Networks (VXLAN) segment. |
Sample Output
- show forwarding-options enhanced-hash-key (Layer 2 Payload Hash Mode)
- show forwarding-options enhanced-hash-key (Layer 2 Header Hash Mode)
- show forwarding-options enhanced-hash-key (Symmetric Hashing)
- show forwarding-options enhanced-hash-key (Fabric Load Balancing Options)
- show forwarding-options enhanced-hash-key (DLB Options)
- show forwarding-options enhanced-hash-key (QFX10000 Series Switches)
- show forwarding-options enhanced-hash-key (Junos OS Evolved)
show forwarding-options enhanced-hash-key (Layer 2 Payload Hash Mode)
user@switch> show forwarding-options enhanced-hash-key
Slot 0
Current Hash Settings
----------------------
Hash-Mode :layer2-payload
inet Hash settings-
--------------------
inet packet fields
Protocol : Yes
Destination L4 Port : Yes
Source L4 Port : Yes
Destination IPv4 Addr : Yes
Source IPv4 Addr : Yes
Vlan id : No
inet6 Hash settings-
---------------------
inet6 packet fields
Next Hdr : Yes
Destination L4 Port : Yes
Source L4 Port : Yes
Destination IPv6 Addr : Yes
Source IPv6 Addr : Yes
Vlan id : Noshow forwarding-options enhanced-hash-key (Layer 2 Header Hash Mode)
user@switch> show forwarding-options enhanced-hash-key
Slot 0
Current Hash Settings
----------------------
Hash-Mode : layer2-header
layer2 Hash settings-
----------------------
layer2 packet fields
Ether Type : Yes
Destination MAC Address : Yes
Source MAC Address : Yes
VLAN ID : No
show forwarding-options enhanced-hash-key (Symmetric Hashing)
user@switch> show forwarding-options enhanced-hash-key
<some output removed for brevity>
Symmetric-hashing SETTINGS
------------------------------------------------------------
inet : Yes
inet6 : Yes
show forwarding-options enhanced-hash-key (Fabric Load Balancing Options)
user@switch> show forwarding-options enhanced-hash-key
<some output removed for brevity>
Fabric Load Balancing Options
------------------------------------------------------------
Load Balancing Method : Flowlet
Fabric Link Scale : 40960 (mbps)
Inactivity Interval : 16 (us)
Hash Region Size/Trunk : 1024 (buckets)
show forwarding-options enhanced-hash-key (DLB Options)
user@switch> show forwarding-options enhanced-hash-key ecmp-dlb
Slot 0
Current RTAG7 Settings
---------------------
Hash-Mode : layer2-payload
inet RTAG7 settings-
--------------------
inet packet fields
Protocol : Yes
Destination L4 Port : Yes
Source L4 Port : Yes
Destination IPv4 Addr : Yes
Source IPv4 Addr : Yes
Vlan id : No
inet6 RTAG7 settings-
---------------------
inet6 packet fields
Next Hdr : Yes
Destination L4 Port : Yes
Source L4 Port : Yes
Destination IPv6 Addr : Yes
Source IPv6 Addr : Yes
Vlan id : No
ECMP Load Balancing Options
------------------------------------------------------------
Load Balancing Method : Disabled
Inactivity Interval : 0 (us)
Flowset Table size : 0 (entries per ECMP)
Reassignment Probability Threshold : 0
Reassignment Quality Delta : 0
Egress Port Load Weight : 0
EgressBytes Min Threshold : 1
EgressBytes Max Threshold : 100
show forwarding-options enhanced-hash-key (QFX10000 Series Switches)
user@switch> show forwarding-options enhanced-hash-key
Seed value for Hash function 0: 2301323130
Seed value for Hash function 1: 2301323130
Seed value for Hash function 2: 2301323130
Seed value for Hash function 3: 2301323130
Inet settings:
--------------
IPV4 dest address: Yes
IPV4 source address: Yes
L4 Dest Port: Yes
L4 Source Port: Yes
Incoming port: No
Inet6 settings:
--------------
IPV6 dest address: Yes
IPV6 source address: Yes
L4 Dest Port: Yes
L4 Source Port: Yes
Incoming port: No
L2 settings:
------------
Dest Mac address: No
Source Mac address: No
Vlan Id: Yes
Inner-vlan Id: No
Incoming port: No
GRE settings:
-------------
Key: No
Protocol: No
MPLS settings:
--------------
MPLS Enabled: Yes
VXLAN settings:
---------------
VXLAN VNID: No
show forwarding-options enhanced-hash-key (Junos OS Evolved)
user@host>show forwarding-options enhanced-hash-key
Hash Seed
-------------------------
Hash Seed : 2227128662
Resilient Hash Seed : 2227128662
Inet RTAG7 Settings
--------------------
Inet packet fields
Protocol : enable
Source L4 Port : tcp, udp, sctp
Destination L4 Port : tcp, udp, sctp
IPV4 Source Address : enable
IPV4 Destination Address : enable
GTP HASHING INFORMATION:
---------------------------
Inet Tunnel Endpoint ID : disable
Inet6 Tunnel Endpoint ID : disable
Inet6 RTAG7 settings-
--------------------
Inet6 packet fields
Next Header : enable
Source L4 Port : tcp, udp, sctp
Destination L4 Port : tcp, udp
IPV6 Source Address : enable
IPV6 Destination Address : enable
Flow label : enable
MPLS RTAG7 settings-
--------------------
label : enable
VXLAN Settings
-------------------------
Vxlan Id : disable
Layer 2 Settings
-------------------------
Source Mac Address : disable
Destination Mac Address : disable
Vlan Id : enable
Inner Vlan Id : enable
Incoming Interface : disable Release Information
Command introduced in Junos OS Release 13.2X51-D15.
Fabric Load Balancing Options output fields introduced in Junos OS
Release 14.1X53-D10.
Incoming port output field introduced in Junos OS Release 18.4R1 for
QFX10000 Series switches.
Command introduced in Junos OS Evolved Release 21,3R1.
The ecmp-dlb statement introduced in Junos OS Evolved Release 19.4R2
for QFX5220 switches.
The ECMP Load Balancing Options output field updated under
show forwarding-options enhanced-hash-key (DLB Options)
statement in Junos Evolved Release 22.2X100-D20 for QFX5240 switches.