I have two EX4650 switches in a preprovisioned virtual chassis:
root@SwitchFabric> show virtual-chassis
Preprovisioned Virtual Chassis
Virtual Chassis ID: 92a8.0532.c3fd
Virtual Chassis Mode: Enabled
Mstr Mixed Route Neighbor List
Member ID Status Serial No Model prio Role Mode Mode ID Interface
0 (FPC 0) Prsnt XH3718360056 ex4650-48y-8c 129 Backup N VC 1 vcp-255/0/54
1 vcp-255/0/55
1 (FPC 1) Prsnt XH3718360020 ex4650-48y-8c 129 Master* N VC 0 vcp-255/0/54
0 vcp-255/0/55
{master:1}
root@SwitchFabric> show configuration virtual-chassis
preprovisioned;
no-split-detection;
member 0 {
role routing-engine;
serial-number XH3718360056;
}
member 1 {
role routing-engine;
serial-number XH3718360020;
}
root@SwitchFabric> show chassis hardware
Hardware inventory:
Item Version Part number Serial number Description
Chassis XH3718360020 Virtual Chassis
Routing Engine 0 BUILTIN BUILTIN RE-EX4650-48Y-8C
Routing Engine 1 BUILTIN BUILTIN RE-EX4650-48Y-8C
FPC 0 REV 09 650-083242 XH3718360056 JNP48Y8C-CHAS
CPU BUILTIN BUILTIN FPC CPU
PIC 0 BUILTIN BUILTIN 48x25G-8x100G
Xcvr 54 REV 01 740-061000 1P1C40A4296BR QSFP28-100G-CU1M
Xcvr 55 REV 01 740-061000 1P1C40A4296GH QSFP28-100G-CU1M
Power Supply 0 REV 04 740-070750 1F178310119 JPSU-650W-AC-AI
Power Supply 1 REV 04 740-070750 1F178310031 JPSU-650W-AC-AI
Fan Tray 0 Fan Tray, Back to Front Airflow - AFI
Fan Tray 1 Fan Tray, Back to Front Airflow - AFI
Fan Tray 2 Fan Tray, Back to Front Airflow - AFI
Fan Tray 3 Fan Tray, Back to Front Airflow - AFI
Fan Tray 4 Fan Tray, Back to Front Airflow - AFI
FPC 1 REV 09 650-083242 XH3718360020 JNP48Y8C-CHAS
CPU BUILTIN BUILTIN FPC CPU
PIC 0 BUILTIN BUILTIN 48x25G-8x100G
Xcvr 54 REV 01 740-061000 1P1C40A4296BR QSFP28-100G-CU1M
Xcvr 55 REV 01 740-061000 1P1C40A4296GH QSFP28-100G-CU1M
They are connected using two 100Gbps DAC cables on ports 54 and 55 (I tried other 100Gbps ports too, this did not make a difference). The virtual chassis forms correctly, but there is no traffic flow between clients on the two switches. They can communicate within a switch, but not between them. If I configure ports 1-48 as vc-ports (I tested on port 15) and connect 10Gbps DACs, then it works fine, but 100Gbps breaks things. What am I missing?
Edit: Forgot to mention, it's running version 18.4R2-S3.
