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Support IP Source Guard (IPSG)

IP Source Guard is a network traffic filtering technology that is based on IP/MAC. It helps to prevent IP address spoofing attacks within a local area network (LAN). For more information, see the  IP Source Guard (IPSG) documentation.

Support Loopback Detection (LBD)

Loopback Detection is a technology that periodically sends a special detection message from an interface, and then checks whether the message is returned to the device (without requiring the receiving and sending interfaces to be the same interface), in order to determine whether there is a loop between the interface, the network or device attached to the device, and the dual interface of the device. For more information, see the Loopback Detection documentation.

Support Policy-Based Routing (PBR)

Policy-Based Routing is a networking technique used to change the next hop IP address for traffic matching certain predefined policies or rule, rather than relying solely on traditional routing protocols and routing table entries. With PBR, administrators can direct traffic along specific paths according to various factors such as source/destination IP address, source/destination port, or packet attributes. For more information, see the Policy-Based Routing (PBR) documentation.

PICOS Switch Supports Functioning as a Telnet Server

To enable the telnet server function, users have to enable telnet service by using the command set system services telnet disable true.

PICOS Reboots Automatically when Stop PICOS or Restart PIOCSPICOS

[S5860]: sometimes PICOS reboots automatically when stop PICOS or restart PIOCSPICOS, with return 'Job for picos.service canceled'. This bug only occured on the lower-performance switch, such as S5860 Series switch, when stop PICOS switch will be reboot sometimes. This bug is fixed in 4.4.4.1.

[AS5835-54T]: Restart Switch Needs so Long Time

[AS5835-54T]: restart switch needs so long time for 10min on AS5835-54T. This bug only occured on AS5835_54T, sometimes PICOS boots up time will be 10 minutes. This bug is fixed in 4.4.4.1.

ERPSv2 Enhancement

ERPSv2 supports sub-ring, revertive and non-revertive mode, WTB timer, FS (Force Switch) and MS (Manual Switch) mode in PICOS 4.4.4.

GVRP Enhancement

PICOS switch supports to selectively advertise specific VLANs through GVRP in version 4.4.4. GVRP VLAN registration typically occurs without the need for manually configuring VLANs on the access interfaces of the switches on both end of the network.

Add Password for Entering Linux Shell 

Superuser can set shell password in CLI with the command set system start-shell-sh password <password>, which is used when entering shell with the command run start shell sh <password>.

Modify Pre-Emphasis (Signal Integrity) Port Settings

 [FCS error] Pre-emphasis's value on physical port is wrong, result in FCS errors. Because of the pre-emphasis settings are incorrect in some switches, packets loss occurs when all ports of the switch forward traffic at line speed. It is fixed in PICOS 4.4.4.2.

System Hang Due to CLI in an Infinite Loop

[AS5835_54T/4.4.0] Program enters loop and keeps printing 'local0.err : tcgetattr error' when the sub-process pica_sh exits. This bug is fixed in 4.4.4.

S5232F-ON Should Support to the No-Me Configuration

On S5232F-ON, by default, management-port-mapping set is Front-Panel which leading the port xe-1/1/32 cannot be breaked out. If using command 'picos_boot management-port-mapping No-Me ' modify the mode as No-Me,  then the port xe-1/1/32 can be breaked out. This bug is fixed in 4.4.4.

In 4.4.4, AS4625-54P/AS4625-54T is not Released.

Do not release PICOS 4.4.4 image for AS4625-54P/AS4625-54T.