The em0 interface is supposed to be 'UP' all the time because it provides the communication channel between the Routing Engine (RE) and Packet Forwarding Engines (PFEs); however, in a certain condition the link status will be changed to 'DOWN'. When EM0 is marked as 'DOWN' it can cause the following issues. Chassis Cluster failover Chassis Cluster failover of Data … [Read more...]
Interpretation of DDOS_PROTOCOL_VIOLATION_SET: Protocol Reject:aggregate is violated message
This article focuses on one type of message shown in the /var/log/message (show log message) and interpretation for the same. This type of message is generated by the DDoS protection feature, which is supported on MX Series routers that have only MPCs installed, or T4000 routers that have only FPC5s installed. The customer might see a message similar to below when DDoS is … [Read more...]
PFE:.* LCHIP.*new errors in LSIF*
PFE:.* LCHIP.*new errors in LSIF* PFE:.* LCHIP.*new errors in LSIF* message indicates that the FPC is reporting LCHIP interface errors. The LCHIP.*new errors in LSIF message is logged each time an LCHIP ASIC detects an error on the L-to-S interface between the LCHIP and Physical Interface Card (PIC) on the egress Flexible PIC Concentrator (FPC). This does not mean that … [Read more...]