Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 774

LAG Mode Status A 268 N/A up Dell# Uptime 14:45:26 Ports Te 1/0 (Up) Te 1/12 (Up) PE Selection Logic After you provision port extenders and power them on, the PEs come online according to the selection logic in the scenarios described in this section. • You may provision cascade ports for different PEs but connect the cascade ports to the same PE. In this case, only the PE with lowest PE ID comes online. In the following example, both cascade ports 1/0 and 1/12 are cabled to the same PE. However, port 1/0 is provisioned for PE 10; port 1/12 is provisioned for PE 20. As a result, only PE 10 comes online. PE 20 remains offline and its configured cascade port is placed in an error state. Dell# show running-config pe ! feature extended-bridge ! pe provision 10 cascade interface TenGigabitEthernet 1/0 stack-unit 0 type C1048P stack-unit 0 priority 1 ! pe provision 20 cascade interface TenGigabitEthernet 1/12 Dell# show pe brief - Port Extenders Information -- PE-id Status Stack-size Type System-MAC 10 online 1 C1048P a0:68:00:3f:92:bc 20 offline 1 C1048P 00:00:00:00:00:00 Dell#show pe errors PE-id: 10 PE MAC: a0:68:00:3f:92:bc Interface Errors: TenGigabitEthernet 1/12 - Error State • You may connect two PEs to a parent C9010 but only provision one PE with cascade ports. In this case, only the PE connected to the lowest numbered cascade port comes online. In the following example, PE 10 is provisioned with cascade ports 1/0, 8, and 12. However, only cascade ports 1/0 and 1/12 are cabled to PE 10; port 1/8 is cabled to a different PE. As a result, only PE 10 comes online becomes it is connected to the lowest numbered cascade port: port 1/0. Port 1/8 is placed in an error state and the PE to which it connects does not come online. Dell# show running-config pe ! feature extended-bridge ! pe provision 10 cascade interface TenGigabitEthernet 1/0,8,12 stack-unit 0 type C1048P Dell# show pe 774 Port Extenders (PEs)