Routing

Can anyone help me with the following please!!

Is it due to some firewall filter or there is some other reasons for these discards

The 'regular discards' seem to be increasing when we do a 'show pfe statistics traffic'.

! PFE Hardware Discard statistics:                    

                           0 timeout                    

                           0 truncated key                    

                           0 bits to test                    

                           0 data error                    

                           0 stack underflow                    

                           0 stack overflow              

                           2129814 regular discard                    

                           0 extended/illegal nexthop discard                    

                           0 invalid iif                    

                           0 info cell drops                    

                           0 input drops                    

                           0 fabric drops                    

                           0 aged packets

PFE Input IPv4 Header Checksum Error and Output MTU Error statistics:                    

                           0 IPv4 header checksum error                    

                            0 MTU error

mandeep(pcl-cr02-re0 vty)# !

PFE Hardware Discard statistics:                    

                           0 timeout                    

                           0 truncated key                    

                           0 bits to test                    

                           0 data error                    

                           0 stack underflow                    

                           0 stack overflow              

                           2129872 regular discard                    

                           0 extended/illegal nexthop discard                    

                           0 invalid iif                    

                           0 info cell drops                    

                           0 input drops                    

                           0 fabric drops                    

                           0 aged packets

PFE Input IPv4 Header Checksum Error and Output MTU Error statistics:                    

                           0 IPv4 header checksum error                    

                           0 MTU error ADPC3(pcl-cr02-re0 vty)#

Regards,

Mandeep

It can be a firewall or, simply, a packet that can't be routed because there is no matching route in the forwarding table.

In addition to what Amonge said:

https://kb.juniper.net/InfoCenter/index?page=content&id=KB9262&smlogin=true

It seems like regualar is the same as normal

The normal discard counter, in the show pfe statistics traffic output, reports the number of packets (notifications) that are silently discarded at packet forwarding engine level, without being further processed by the host (CPU on the System Board or on the Routing Engine).

For discarded packets the host (System Board) will not even need to originate an ICMP destination unreachable message toward the source of the packet, hence the packet is silently dropped.

Normal discard are reported when:
Packets match a specific term of a firewall filter term with an action of discard

The extended discard counter, in the show pfe statistics traffic output, reports the number of packets (notifications) that are silently discarded but that also need to be sent to the host (Routing Engine) in order to be further processed.

Extended discard are reported when:
Packets match a firewall filter term whose action includes both discard and another action requiring processing by the Route Engine.
(These include log, syslog, count, and sample.)

Thank you Guys!!