Use this command to predict how packets are forwarded over a LAG or to the next hop device when ECMP is the destination. Given the link aggregation method, ingress physical port and values of various packet fields, this command predicts an egress physical port within the LAG or ECMP for the packet.
| Format | show hashdest {lag lag-id | ecmp prefix/prefix-length } in_port unit/slot/port src-mac macaddr dst-mac macaddr [vlan vlan-id] ethertype 0xXXXX [src-ip {ipv4-addr | ipv6-addr} dst-ip {ipv4-addr | ipv6-addr} protocol pid src-l4-port port-num dst-l4-port port-num] |
| Mode | Privileged EXEC |
| Parameter | Definition |
|---|---|
| lag | The LAG group for which to display the egress physical port. |
| ecmp | The IP address of the EMC_ group for which to display the egress physical port. |
| in_port | The incoming physical port for the system. |
| src-mac | The source MAC address. |
| dst-mac | The destination MAC address. |
| vlan | The VLAN ID for VLAN-tagged packets. Do not use this parameter or enter 0 for non-VLAN-tagged packets. |
| ethertype | The 16-bit EtherType value, in the form 0xXXXX. For layer 3 packets, hash prediction is only available for IPv4 (0x0800) and IPv6 (0x86DD). |
| src-ip | The source IP address, entered as x.x.x.x for IPv4 or x:x:x:x:x:x:x:x for IPv6 packets. |
| dst-ip | The destination IP address, entered as x.x.x.x for IPv4 or x:x:x:x:x:x:x:x for IPv6 packets. |
| protocol | The protocol ID. |
| src-l4-port | The layer 4 source port. |
| dst-l4-port | The layer 4 destination port. |
Example: Layer 2 VLAN tagged packet forwarded to a LAG
(Routing) #show hashdest lag 1 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E vlan 10 ethertype 0x8870 LAG Destination Port ----------- ---------------- 1 0/29
Example: Layer 2 non-VLAN tagged packet forwarded to a LAG
(Routing) # show hashdest lag 1 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E ethertype 0x8870 LAG Destination Port ----------- ---------------- 1 0/31
Example: VLAN tagged IPv4 UDP packet forwarded to a LAG
(Routing) #show hashdest lag 1 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E ethertype 0x0800 src-ip 7.0.0.2 dst-ip 3.0.0.2 protocol 17 src-l4-port 63 dst-l4-port 64 LAG Destination Port ----------- ---------------- 1 0/32
Example: VLAN tagged IPv4 TCP packet forwarded to a LAG
(Routing) #show hashdest lag 1 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E vlan 10 ethertype 0x0800 src-ip 7.0.0.2 dst-ip 3.0.0.2 protocol 6 src-l4-port 67 dst-l4-port 68 LAG Destination Port ----------- ---------------- 1 0/31
Example: VLAN tagged IPv4 UDP packet forwarded to an ECMP group
(Routing) #show hashdest ecmp 10.0.0.2/16 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E vlan 0 ethertype 0x0800 src-ip 7.0.0.2 dst-ip 3.0.0.2 protocol 17 src-l4-port 63 dst-l4-port 64 Egress Port ---------------------------- 30.0.0.2 on interface 0/31
Example: VLAN tagged IPv4 TCP packet forwarded to an ECMP group
(Routing) #show hashdest ecmp 10.0.0.2/16 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E vlan 10 ethertype 0x0800 src-ip 7.0.0.2 dst-ip 3.0.0.2 protocol 6 src-l4-port 67 dst-l4-port 68 Egress Port ----------- 0/29
Example: VLAN tagged IPv6 UDP packet forwarded to an ECMP group
(Routing) #show hashdest ecmp 4001::200/64 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E ethertype 0x86dd src-ip 7001:0:0:0:0:0:0:2 dst-ip 3001:0:0:0:0:0:0:2 protocol 17 src-l4-port 63 dst-l4-port 64 Egress Port ---------------------------- 6001::200 on interface 0/31
Example: VLAN tagged IPv6 TCP packet forwarded to an ECMP group
(Routing) #show hashdest ecmp 6001::200/64 in_port 0/3 src-mac 00:00:20:21:AE:8A dst-mac 00:10:18:99:F7:4E ethertype 0x86dd src-ip 7001:0:0:0:0:0:0:2 dst-ip 3001:0:0:0:0:0:0:2 protocol 6 srcl4-port 67 dst-l4-port 68 Egress Port ---------------------------- 8001::200 on interface 0/32
