NOTEs:

By default, 10G-Base-KR ports are disabled.
There is a limitation when enabled the 10G-Base-KR ports as either front panel ports or management ports, namely:
- On AS7726-32X and N8550-32C, port xe-1/1/32 is not allowed to be split into four Gigabit Ethernet ports.
- On AS7326-56X and N8550-48B8C, port xe-1/1/8 is not allowed to be split into four Gigabit Ethernet ports.
The interface rate of the two Me ports can only support auto-negotiation mode.

Introduction

AS7726-32X, AS7326-56X, N8550-48B8C and N8550-32C have two 10G-Base-KR ports (10G-KR) on the front panel to support additional high-speed link between CPU and ASIC (switch chip). PICOS supports to configure the two 10G-Base-KR ports as two 10G SFP+ front panel data ports or they can be configured to provide additional high speed links between the switch CPU and ASIC.

When configured as front panel data ports, they can be used as normal SFP+ port. As a data port, the interface name becomes Te-1/1/m. As shown in Figure 1, when configured as two 10G-KR ports, the ports are linked to two management ports eth1 and eth2 on the CPU with 10G bandwidth, and the port name becomes Me-1/1/n (Management Ethernet port) under PICOS CLI. This alllows the management traffic and data traffic through the Me-1/1/n ports can be processed by eth1 and eth2 ports on the CPU.

By default, 10G-Base-KR ports are not enabled.

Figure 1. 10G-KR ports link between CPU and ASIC

Supported Platforms

Currently only AS7726-32X, AS7326-56X, N8550-48B8C and N8550-32C switches have the 10G-Base-KR ports which can be configured as two 10G SFP+ data ports on the front panel or as two 10G-KR management ports linked to CPU. By default, 10G-Base-KR ports are disabled.

Configuration

This section describes how to configure the two 10G-Base-KR ports as front panel ports or management ports linked to CPU.

Configuring as the Management Port

From the Linux shell prompt, run sudo picos_boot management-port-mapping command to configure the 10G-Base-KR ports as two 10G-KR management ports linked to CPU. The default configuration is [3] No me Port(s)，indicating that the 10G-Base-KR ports are disabled.

admin@PICOS:~$ sudo picos_boot management-port-mapping
    [1]  To Host CPU
    [2]  To Front Panel    
    [3]  No me Port(s)      * default
Enter your choice(1,2,3):1

 To Host CPU is selected.
Please restart the PICOS service

Restart PICOS to make the configuration take effect.

admin@Xorplus:~$ sudo systemctl restart picos

We can use run show interface brief to check the interface configuration information.

Take AS7726-32X as an example, we can see that the port name of the last two 10G-Base-KR ports are me-1/1/1 and me-1/1/2. They are two 10G-KR management ports linked to CPU.

admin@Xorplus# run show interface brief
Interface   Management  Status  Flow Control  Duplex  Speed    Description
----------  ----------  ------  ------------  ------  -------  ------------------------------
xe-1/1/1    Enabled     Down    Disabled      Full    Auto    
xe-1/1/2    Enabled     Down    Disabled      Full    Auto    
xe-1/1/3    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/4    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/5    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/6    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/7    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/8    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/9    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/10   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/11   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/12   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/13   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/14   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/15   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/16   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/17   Enabled     Down    Disabled      Full    Auto    
xe-1/1/18   Enabled     Down    Disabled      Full    Auto    
xe-1/1/19   Enabled     Down    Disabled      Full    Auto    
xe-1/1/20   Enabled     Down    Disabled      Full    Auto    
xe-1/1/21   Enabled     Down    Disabled      Full    Auto    
xe-1/1/22   Enabled     Down    Disabled      Full    Auto    
xe-1/1/23   Enabled     Down    Disabled      Full    Auto    
xe-1/1/24   Enabled     Down    Disabled      Full    Auto    
xe-1/1/25   Enabled     Down    Disabled      Full    Auto    
xe-1/1/26   Enabled     Down    Disabled      Full    Auto    
xe-1/1/27   Enabled     Down    Disabled      Full    Auto    
xe-1/1/28   Enabled     Down    Disabled      Full    Auto    
xe-1/1/29   Enabled     Down    Disabled      Full    Auto    
xe-1/1/30   Enabled     Down    Disabled      Full    Auto    
xe-1/1/31   Enabled     Down    Disabled      Full    Auto   
xe-1/1/32   Enabled     Down    Disabled      Full    Auto   
me-1/1/1(33)  Enabled     Up      Disabled      Full    Auto 
me-1/1/2(34) Enabled     Up      Disabled      Full    Auto

Under Linux shell, you can see the two ports eth1 and eth2 in addition to the management port eth0 as the ifconfig -a command shows below. Under PICOS CLI, the Me ports are bound to the two management ports eth1 and eth2 on CPU. Applications of Linux including PICOS can access (read/write) eth1 and eth2. For example, port configurations such as trunk VLANs can be applied to Me ports.

root@Xorplus:/home/admin# ifconfig -a
dummy0    Link encap:Ethernet  HWaddr 72:c9:69:6f:35:2d
          BROADCAST NOARP  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
 
eth0      Link encap:Ethernet  HWaddr b8:6a:97:8a:77:68
          inet addr:10.10.51.60  Bcast:10.10.51.255 Mask:255.255.255.0
          inet6 addr: fe80::ba6a:97ff:fe8a:7768/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6923 errors:0 dropped:0 overruns:0 frame:0
          TX packets:188 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:494847 (483.2 KiB)  TX bytes:24437 (23.8 KiB)
          Interrupt:16
 
eth1      Link encap:Ethernet  HWaddr b8:6a:97:8a:77:69
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
 
eth2      Link encap:Ethernet  HWaddr b8:6a:97:8a:77:6a
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000

Configuring as Front Panel Ports

From the Linux shell prompt, run sudo picos_boot management-port-mapping command to configure the 10G-Base-KR ports as 10G SFP+ data ports on the front panel.

admin@PICOS:~$ sudo picos_boot management-port-mapping
    [1]  To Host CPU        * default
    [2]  To Front Panel    
    [3]  No me Port(s)    
Enter your choice(1,2,3):2

To Front Panel is selected.
Please restart the PICOS service

Restart PICOS to make the configuration take effect.

admin@Xorplus:~$ sudo systemctl restart picos

We can use run show interface brief to check the interface configuration information.

Take AS7726-32X as an example, we can see the last two 10G-Base-KR ports are configured as two 10G SFP+ ports and the port names are te-1/1/1 and te-1/1/2. When configured as the front panel ports, the 10G-Base-KR ports can be used as normal 10G SFP+ ports.

admin@Xorplus# run show interface brief
Interface   Management  Status  Flow Control  Duplex  Speed    Description
----------  ----------  ------  ------------  ------  -------  ------------------------------
xe-1/1/1    Enabled     Down    Disabled      Full    Auto    
xe-1/1/2    Enabled     Down    Disabled      Full    Auto    
xe-1/1/3    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/4    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/5    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/6    Enabled     Up      Disabled      Full    40Gb/s 
xe-1/1/7    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/8    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/9    Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/10   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/11   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/12   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/13   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/14   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/15   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/16   Enabled     Up      Disabled      Full    40Gb/s  
xe-1/1/17   Enabled     Down    Disabled      Full    Auto    
xe-1/1/18   Enabled     Down    Disabled      Full    Auto    
xe-1/1/19   Enabled     Down    Disabled      Full    Auto    
xe-1/1/20   Enabled     Down    Disabled      Full    Auto    
xe-1/1/21   Enabled     Down    Disabled      Full    Auto    
xe-1/1/22   Enabled     Down    Disabled      Full    Auto    
xe-1/1/23   Enabled     Down    Disabled      Full    Auto    
xe-1/1/24   Enabled     Down    Disabled      Full    Auto    
xe-1/1/25   Enabled     Down    Disabled      Full    Auto     
xe-1/1/26   Enabled     Down    Disabled      Full    Auto    
xe-1/1/27   Enabled     Down    Disabled      Full    Auto    
xe-1/1/28   Enabled     Down    Disabled      Full    Auto    
xe-1/1/29   Enabled     Down    Disabled      Full    Auto    
xe-1/1/30   Enabled     Down    Disabled      Full    Auto    
xe-1/1/31   Enabled     Down    Disabled      Full    Auto    
xe-1/1/32   Enabled     Down    Disabled      Full    Auto    
te-1/1/1(33)    Enabled     Up      Disabled      Full    10Gb/s  
te-1/1/2(34)    Enabled     Up      Disabled      Full    10Gb/s

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