Hey, Are you testing with a small packet size ? If so, according to the the documentation :
Traffic is dropped when packets of size 64–100 bytes are sent on 1G and 10G ports. For 64-byte packets, traffic drop is seen at 70% and beyond of the line rate. For 90-byte packets, traffic drop is seen at 90% and beyond of the line rate. For 95-byte packets, traffic drop is seen at 95% and beyond of the line rate. Traffic is dropped when: Traffic is sent on a VRF interface. Traffic is sent across layer 2 and layer 3. However, traffic is not dropped when the packet size is greater than 100 bytes, even if the packets are sent bidirectionally at the line rate. My thoughts and words are my own. Spyros On 02/08/2019, 16:49, "cisco-nsp on behalf of Davide Ambrosi" <cisco-nsp-boun...@puck.nether.net on behalf of shuttl...@hotmail.com> wrote: Hello, I'm testing 2 ASR-920-24SZ-M with XE 16.09.03 version. The devices are connected back-to-back using Teng 0/0/25 interfaces with MPLS enabled. The TenG0/0/27 of both devices are connected to traffic generator instruments. Here's the setup: +----------------------+ |TRAFFIC GEN | +--+------------------+ | |EVC1 | | |TE0/0/27 +----------------+ | 920|TEST1 | +---------------+ |TE0/0/25 | |MPLS | | |TE/0/0/25 +----------------+ | 920|TEST2 | +----------------+ |TE0/0/27 | | |EVC1 | +-------------------+ |TRAFFIC GEN| +-------------------+ There is a L2VPN Xconnect pseudowire build between the two EVC to allow layer2 connectivity between traffic generator equipements. When I generate over 7 Gbit/sec of throughput I'm registering a lot of output drops on the exit Teng interface. Let me explain better: 1) Traffic generator equipment send traffic to 920-TEST1 on TE0/0/27 EVC1 2) 920-TEST1 receive the traffic and encapsulate it into a MPLS pseudowire going out through TE0/0/25 3) 920-TEST2 receive the pseudowire MPLS traffic through TE0/0/25 4) 920-TEST2 decapsulate the traffic and send to the traffic generator connected on port TE0/0/27 --> DROPS!!!! I have a lot of drops only at point number 4. If I increase the traffic to reach 10Gbit/sec saturation I got about 30% of traffic loss on the exit interface 920-TEST2 TE0/0/27. No drop occurs on the other segments; only through the pseudowire exit interface. Any advice ? I try to modify the queue because the microbusts issue of the ASR920 platform. Non success at all. Thank you, Davide Configurations: hostname ASR920-TEST1 ! mpls ldp session protection mpls ldp igp sync holddown 6000 mpls traffic-eng tunnels multilink bundle-name authenticated class-map match-any ADVANCED-EXP2 match mpls experimental topmost 2 class-map match-any REALTIME-EXP5 match mpls experimental topmost 5 class-map match-any CRITICAL-EXP6 match mpls experimental topmost 6 class-map match-any INTERNET-EXP01 match mpls experimental topmost 0 1 ! policy-map BB-PORT-MPLS-10G class REALTIME-EXP5 priority level 1 police 1000000000 conform-action transmit exceed-action drop class CRITICAL-EXP6 priority level 2 police 1000000000 conform-action transmit exceed-action drop class ADVANCED-EXP2 bandwidth percent 59 random-detect class INTERNET-EXP01 bandwidth percent 20 random-detect class class-default bandwidth percent 1 random-detect policy-map MARK-COS0-IN class class-default set mpls experimental topmost 0 policy-map MARK-COS5-IN class class-default set mpls experimental topmost 5 ! ! ! ! interface Null0 no ip unreachables ! interface Loopback0 description IGP/MPLS Backbone Interface ip address 172.16.31.1 255.255.255.255 isis tag 59699 ! interface TenGigabitEthernet0/0/25 description LINK TO ASR920-TEST2 TE0/0/25 - BB MPLS mtu 9100 bandwidth 10000000 bandwidth qos-reference 10000000 ip address 172.16.32.1 255.255.255.252 no ip redirects no ip proxy-arp ip router isis 59699 load-interval 30 mpls ip mpls traffic-eng tunnels bfd template BFD-50MS_BB-MPLS isis network point-to-point isis metric 10 service-policy output BB-PORT-MPLS-10G ip rsvp bandwidth ! interface TenGigabitEthernet0/0/27 description TEST VWPS 10G no ip address load-interval 30 no keepalive service instance 1 ethernet encapsulation default l2protocol tunnel cdp stp vtp pagp dot1x lldp lacp udld loam esmc elmi ptppd mmrp mvrp service-policy input MARK-COS0-IN ! ! router isis 59699 net 49.0001.1720.1603.1001.00 is-type level-2-only authentication mode md5 authentication key-chain IS-IS_BB_MPLS metric-style wide fast-flood 10 set-overload-bit on-startup 120 max-lsp-lifetime 65535 lsp-refresh-interval 65000 spf-interval 5 50 200 prc-interval 5 50 200 lsp-gen-interval 5 5 200 no hello padding log-adjacency-changes fast-reroute per-prefix level-2 all fast-reroute remote-lfa level-2 mpls-ldp microloop avoidance protected passive-interface Loopback0 bfd all-interfaces mpls ldp sync mpls traffic-eng router-id Loopback0 mpls traffic-eng level-2 ! ! ! l2vpn xconnect context TEST-VWPS_10G description TEST-VWPS_10G member TenGigabitEthernet0/0/27 service-instance 1 member 172.16.31.2 11 encapsulation mpls ! ------------------------------------------------------------ hostname ASR920-TEST2 bfd map ipv4 172.16.31.1/32 172.16.31.2/32 BFD_PW-FAST-DETECT bfd-template single-hop BFD-50MS_BB-MPLS interval min-tx 15 min-rx 15 multiplier 3 ! class-map match-any ALL-TRAFFIC class-map match-any ADVANCED-EXP2 match mpls experimental topmost 2 class-map match-any cos1 match cos 1 class-map match-any REALTIME-EXP5 match mpls experimental topmost 5 class-map match-any CRITICAL-EXP6 match mpls experimental topmost 6 class-map match-any INTERNET-EXP01 match mpls experimental topmost 0 1 ! policy-map BB-PORT-MPLS-10G class REALTIME-EXP5 priority level 1 police 1000000000 conform-action transmit exceed-action drop class CRITICAL-EXP6 priority level 2 police 1000000000 conform-action transmit exceed-action drop class ADVANCED-EXP2 bandwidth percent 59 random-detect class INTERNET-EXP01 bandwidth percent 20 random-detect class class-default bandwidth percent 1 random-detect policy-map leaf class class-default queue-limit 2097152 bytes policy-map MARK-COS0-IN class class-default set mpls experimental topmost 0 policy-map MARK-COS5-IN class class-default set mpls experimental topmost 5 class class-default police 50000000 conform-action transmit exceed-action drop policy-map logical class class-default service-policy leaf policy-map root class class-default service-policy logical ! ! ! interface Null0 no ip unreachables ! interface Loopback0 description IGP/MPLS Backbone Interface ip address 172.16.31.2 255.255.255.255 isis tag 59699 ! ! interface TenGigabitEthernet0/0/25 description LINK TO ASR920-TEST1 TE0/0/25 - BB MPLS mtu 9100 bandwidth qos-reference 10000000 ip address 172.16.32.2 255.255.255.252 no ip redirects no ip proxy-arp ip router isis 59699 load-interval 30 mpls ip mpls traffic-eng tunnels bfd template BFD-50MS_BB-MPLS isis network point-to-point isis metric 10 isis authentication key-chain IS-IS_BB_MPLS service-policy output BB-PORT-MPLS-10G ip rsvp bandwidth ! ! interface TenGigabitEthernet0/0/27 description TEST VWPS 10G no ip address load-interval 30 no keepalive service-policy output leaf service instance 1 ethernet encapsulation default l2protocol tunnel cdp stp vtp pagp dot1x lldp lacp udld loam esmc elmi ptppd mmrp mvrp service-policy input MARK-COS0-IN ! router isis 59699 net 49.0001.1720.1603.1002.00 is-type level-2-only authentication mode md5 authentication key-chain IS-IS_BB_MPLS metric-style wide fast-flood 10 set-overload-bit on-startup 120 max-lsp-lifetime 65535 lsp-refresh-interval 65000 spf-interval 5 50 200 prc-interval 5 50 200 lsp-gen-interval 5 5 200 no hello padding log-adjacency-changes fast-reroute per-prefix level-2 all fast-reroute remote-lfa level-2 mpls-ldp microloop avoidance protected passive-interface Loopback0 bfd all-interfaces mpls ldp sync mpls traffic-eng router-id Loopback0 mpls traffic-eng level-2 ! ! l2vpn xconnect context TEST-VWPS_10G description TEST-VWPS_10G member TenGigabitEthernet0/0/27 service-instance 1 member 172.16.31.1 11 encapsulation mpls ! _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/