How to troubleshooting HW FIB on ASR9k | PBTS/TE
19 11 月, 2015,由 frank撰写
Problem Description
Follow Topology
10.200.0.24 10.200.0.26 10.200.0.32 +------+ +------+ +------+ +------+ |XiAn | | SZ | |HKBR | |Canada| |Huawei+------+ +-----+ASR9k +-----+ASR9k | +------+ +------+ +------+ +------+
For the issue, HuaWei is Head, asr9k should mid and end node. And Huawei found they put the traffics to Canada by LDP label, not TE label. So traffics should arrive to HK ASR9k by LDP label, then forwarding by LDP too from HK ASR9k to Canada. That not match normal scenario.
For normal scenario, should use TE label from head to end. And after Huawei put traffics to TE LSP, the issue will recovery to normal. Refer to why Huawei send traffics by LDP, that should their issue, will fix in future by them, but even if to do that, 9k shouldn’t drop packets. We need find whether packets drop at 9k and due to label issue first. Now set up test environment in customer site. waiting update.
Resolution
For the issue, after discussed with DE, we found the root reason. As our design, all traffics should punt to different TE by PBTS, and all TE take different forward-class. Then traffics should forward by rsvp label swap in BR devices. Refer to rsvp label, no any PBTS/forward-class concept, that only forward. As follow pic:
But due to Huawei abnormal behaviour, cause packets forward by LDP label. As you saw, packets can arrived HKBR, but drop at input NP: RSV_DROP_MPLS_NRLDI_NO_MATCH, as follow pic:
Why our ASR9k drop the packets, there are any different? When packets arrive ASR9k, will check LFIB that two path(because test bed only have 2 tunnel) point to Canada. and take forward-class. But the port face to P, so no any PBTS, so traffics couldn’t punt to those tunnel, so couldn’t complete reprogramming, and drop the packets:
Follow HW LFIB analyzing when use LDP label on HKBR2
RP/0/RSP0/CPU0:A07-A9K-HK#sh mpls for Wed Nov 11 09:47:28.385 Beijing Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ ...... 16019 Pop 10.200.0.32/32 tt1501 10.200.0.32 0 Pop 10.200.0.32/32 tt1505 10.200.0.32 0 RP/0/RSP0/CPU0:A07-A9K-HK#sh mpls traffic-eng forwarding Wed Nov 11 09:49:04.597 Beijing P2P tunnels: Tunnel ID Ingress IF Egress IF In lbl Out lbl Backup -------------------------- -------------- -------------- ------- ------- ------- 10.200.0.32 1261_28 Te0/0/1/0 Te0/0/0/1 16035 32887 unknown 10.200.0.32 1265_28 Te0/0/1/0 Te0/0/0/1 16036 32913 unknown 10.200.0.12 102_56598 Te0/0/0/1 Te0/0/1/0 16024 3 unknown 10.200.0.12 202_56599 Te0/0/0/1 Te0/0/1/0 16025 3 unknown 10.200.0.24 102_15278 Te0/0/0/1 Te0/0/1/0 16022 3 unknown <<< 10.200.0.24 202_15279 Te0/0/0/1 Te0/0/1/0 16023 3 unknown <<< 10.200.0.26 1261_3 - Te0/0/0/1 16033 32900 unknown 10.200.0.26 1265_3 - Te0/0/0/1 16034 32912 unknown 10.200.0.26 1501_3 - Te0/0/1/0 16037 3 unknown 10.200.0.26 1505_3 - Te0/0/1/0 16038 3 unknown Displayed 4 tunnel heads, 11 label P2P rewrites Displayed 0 tunnel heads, 0 label P2MP rewrites RP/0/RSP0/CPU0:A07-A9K-HK# RP/0/RSP0/CPU0:A07-A9K-HK# RP/0/RSP0/CPU0:A07-A9K-HK#sh mpls for labels 16019 hardware ingress detail lo 0/0/cpu0 Wed Nov 11 09:52:26.136 Beijing Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 16019 Pop 10.200.0.32/32 tt1501 10.200.0.32 N/A Updated Nov 11 03:30:53.643 Version: 46, Priority: 1 MAC/Encaps: 14/14, MTU: 1500 Label Stack (Top -> Bottom): { Imp-Null Imp-Null } Packets Switched: 0 Pop 10.200.0.32/32 tt1505 10.200.0.32 N/A Updated Nov 11 03:30:53.643 MAC/Encaps: 14/14, MTU: 1500 Label Stack (Top -> Bottom): { Imp-Null Imp-Null } Packets Switched: 0 LEAF - HAL pd context : sub-type : MPLS, ecd_marked:0, has_collapsed_ldi:0, collapse_bwalk_required:0, ecdv2_marked:0 Leaf H/W Result: Leaf H/W Result on NP:0 Raw Data0: 0x11050805 98030000 00000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 cb0 vpn_special: 0 vc_label: 0 evpn_label: 0 match: 1 rsvd: 0 valid: 1 cb1 p2mp_ip_lookup: 0 p2mp_or_tp_wrap: 0 tp: 0 igp_pref: 1 recursive: 0 non_recursive: 1 cb2 flow_label_dispose: 0 tp: 0 receive_entry_type: 0 vc_label_vpws: 0 fwd: 1 control_word_enabled: 0 imp_ttl_255: 0 recursive: 0 ecmp_size: 5 nr_fwd_entry nrldi_ptr: 0x980300 vpn_key: 0 stats_ptr: 0 ecmp_stats_base: 0 nrLDI eng ctx: flags: 0x10501, proto: 2, npaths: 0, nbuckets: 2 ldi_tbl_idx: 0x37c, ecd_ref_cft: 0 pbts_ldi_tbl_idx: 0x398 PBTS NR-LDI H/W Result for path 0 [Common to all NPs: index: 0x398 (BE)] << forward-class 1 Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 1 [Common to all NPs: index: 0x399 (BE)] << forward-class 2 Raw Data0: 0x31060003 7c030098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x3 nr_ldi_base : 0x7c0300 (LE) << link to nr_ldi patch, data revers, should 0x00037c pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 2 [Common to all NPs: index: 0x39a (BE)] << forward-class 3 Raw Data0: 0x31060003 7d030098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x3 nr_ldi_base : 0x7d0300 (LE) << same above, should 0x00037d pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 3 [Common to all NPs: index: 0x39b (BE)] Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 4 [Common to all NPs: index: 0x39c (BE)] Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 5 [Common to all NPs: index: 0x39d (BE)] Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 6 [Common to all NPs: index: 0x39e (BE)] Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) PBTS NR-LDI H/W Result for path 7 [Common to all NPs: index: 0x39f (BE)] Raw Data0: 0x31060001 00000098 03000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 PBTS LDI: ecmp size : 0x1 nr_ldi_base : 0x0 (LE) pbts_ldi_base: 0x980300 (LE) NR-LDI H/W Result for path 0 [NP Id: 0 index: 0x37c (BE)] << 0x7c0300 Raw Data0: 0x111a00ff 05000000 00000000 0003e931 Raw Data1: 0x00004000 0001600b 61600000 00000000 ldi_resolve_control_byte0: bvi: 0 reserved: 0 match: 1 valid: 1 txadj_internal: 0 ldi_resolve_control_byte1: mldp: 0 default_action: 1 rx_adj: 0 te_IpFrr_adj: 1 label_1_valid: 0 label_2_valid: 0 local_label_valid: 1 ldpBkup_label_valid: 0 ldi_resolve_control_byte2: pwhe_nrldi: 0 spare: 0 ipldp_FRR_TE: 0 bvi: 0 np_bit_map: 0xff label_stats_index: 0x600b61 igp_local_label: label_msb: 1001 label_lsb: 3 exp: 0 eos: 1 << not bottom label output_label: label_msb: 0 label_lsb: 4 exp: 0 eos: 0 << bottom label Adj (te_nh): te_nh_adj_ptr: 0x500 (LE) te_nh_control: reserved: 0 doNotIncStatsIng: 0 isMPinNR_LDI: 0 uturn_check: 0 backup_LDP_label: label_msb: 0(null) exp: 0(null) eos: 0 PQ_label: label: 0(null) exp: 0 eos: 0 NR-LDI H/W Result for path 1 [NP Id: 0 index: 0x37d (BE)] << 0x7d0300 Raw Data0: 0x111a00ff 07000000 00000000 0003e931 Raw Data1: 0x00004000 0001700b 61a00000 00000000 ldi_resolve_control_byte0: bvi: 0 reserved: 0 match: 1 valid: 1 txadj_internal: 0 ldi_resolve_control_byte1: mldp: 0 default_action: 1 rx_adj: 0 te_IpFrr_adj: 1 label_1_valid: 0 label_2_valid: 0 local_label_valid: 1 ldpBkup_label_valid: 0 ldi_resolve_control_byte2: pwhe_nrldi: 0 spare: 0 ipldp_FRR_TE: 0 bvi: 0 np_bit_map: 0xff label_stats_index: 0x700b61 igp_local_label: label_msb: 1001 label_lsb: 3 exp: 0 eos: 1 output_label: label_msb: 0 label_lsb: 4 exp: 0 eos: 0 Adj (te_nh): te_nh_adj_ptr: 0x700 (LE) te_nh_control: reserved: 0 doNotIncStatsIng: 0 isMPinNR_LDI: 0 uturn_check: 0 backup_LDP_label: label_msb: 0(null) exp: 0(null) eos: 0 PQ_label: label: 0(null) exp: 0 eos: 0 TE-NH eng ctx: flags: 0x402, te_nh: 0x5, path_ss: 0, rx_adj : 0x19 tx_adj: 0x28e, bkup_te_nh: 0 stats_ptr : 0: 0x530157, 1: 0x53014a, 2: 0, 3: 0 4: 0, 5: 0, 6: 0, 7: 0 IPv6 tenh :0 TE-NH H/W Result for 1st NP:0 (index: 0x5 (BE)): Raw Data0: 0x51000003 ea500000 00b80a61 0000008e Raw Data1: 0x02000000 19000000 00000000 00000000 cb0 spare: 0 default_action: 1 backup_indication: 0 match: 1 rsvd: 0 valid: 1 cb1 spare_cb: 0 tp_path_ss: 0 te_nh_incomplete: 0 tunnel_over_tunnel: 0 spare: 0 cb2 spare: 0 te_nh_incomplete: 0 spare_cb: 0 TE_local_label: label: 16037 << HKBR2 TE local label exp: 0 eos: 0 TE_tunnel_label: label: 0 exp: 0 eos: 0 te_nh_stats_ptr: 0xb80a61 merge_point_label: label: 0 exp: 0 eos: 0 tx_adj_ptr: 0x8e0200 (LE) bu_te_nh_ptr: 0x0 (LE) rx_adj_ptr: 0x190000 (LE) RX H/W Result for 1st NP:0 (index: 0x19 (BE)): Raw Data0: 0x91000000 00000060 040002c0 04000000 adj_resolve_control_byte0 match: 1 valid: 1 iptunl_adj: 0 remote_rack: 0 adj_resolve_control_byte1 adj_down: 0 mgscp_en: 0 rx_lag_hash_en: 0 rx_lag_adj: 0 pwhe: 0 adj_resolve_control_byte2 rx_lag_adj: 0 rx_adj_null0: 0 rp_destined: 0 rx_punt: 0 rx_drop: 0 sfp/vqi : 0x60 << can check by "show controller pm inter ten x/x/x/x" egress np port : 0x400 if_handle : 0x40002c0 TX H/W Result for NP:0 (index: 0x28e (BE)): Raw Data0: 0x91040000 0600dc05 00000000 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x0 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000 TX H/W Result for NP:1 (index: 0x28e (BE)): Raw Data0: 0x91040000 0600dc05 18006100 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x180061 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000 TE-NH eng ctx: flags: 0x402, te_nh: 0x7, path_ss: 0, rx_adj : 0x19 tx_adj: 0x28e, bkup_te_nh: 0 stats_ptr : 0: 0x530161, 1: 0x53014c, 2: 0, 3: 0 4: 0, 5: 0, 6: 0, 7: 0 IPv6 tenh :0 TE-NH H/W Result for 1st NP:0 (index: 0x7 (BE)): Raw Data0: 0x51000003 ea600000 00080b61 0000008e Raw Data1: 0x02000000 19000000 00000000 00000000 cb0 spare: 0 default_action: 1 backup_indication: 0 match: 1 rsvd: 0 valid: 1 cb1 spare_cb: 0 tp_path_ss: 0 te_nh_incomplete: 0 tunnel_over_tunnel: 0 spare: 0 cb2 spare: 0 te_nh_incomplete: 0 spare_cb: 0 TE_local_label: label: 16038 << HKBR2 TE local label exp: 0 eos: 0 TE_tunnel_label: label: 0 exp: 0 eos: 0 te_nh_stats_ptr: 0x80b61 merge_point_label: label: 0 exp: 0 eos: 0 tx_adj_ptr: 0x8e0200 (LE) bu_te_nh_ptr: 0x0 (LE) rx_adj_ptr: 0x190000 (LE) RX H/W Result for 1st NP:0 (index: 0x19 (BE)): Raw Data0: 0x91000000 00000060 040002c0 04000000 adj_resolve_control_byte0 match: 1 valid: 1 iptunl_adj: 0 remote_rack: 0 adj_resolve_control_byte1 adj_down: 0 mgscp_en: 0 rx_lag_hash_en: 0 rx_lag_adj: 0 pwhe: 0 adj_resolve_control_byte2 rx_lag_adj: 0 rx_adj_null0: 0 rp_destined: 0 rx_punt: 0 rx_drop: 0 sfp/vqi : 0x60 egress np port : 0x400 if_handle : 0x40002c0 TX H/W Result for NP:0 (index: 0x28e (BE)): Raw Data0: 0x91040000 0600dc05 00000000 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x0 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000 TX H/W Result for NP:1 (index: 0x28e (BE)): Raw Data0: 0x91040000 0600dc05 18006100 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x180061 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000
Follow HW LFIB analyzing when use RSVP label on HKBR2
RP/0/RSP0/CPU0:A07-A9K-HK#sh mpls traffic-eng forwarding Wed Nov 11 15:37:38.577 Beijing P2P tunnels: Tunnel ID Ingress IF Egress IF In lbl Out lbl Backup -------------------------- -------------- -------------- ------- ------- ------- 10.200.0.32 1261_28 Te0/0/1/0 Te0/0/0/1 16035 32887 unknown 10.200.0.32 1265_28 Te0/0/1/0 Te0/0/0/1 16036 32913 unknown 10.200.0.12 102_56598 Te0/0/0/1 Te0/0/1/0 16024 3 unknown 10.200.0.12 202_56599 Te0/0/0/1 Te0/0/1/0 16025 3 unknown 10.200.0.24 102_15278 Te0/0/0/1 Te0/0/1/0 16022 3 unknown 10.200.0.24 202_15279 Te0/0/0/1 Te0/0/1/0 16023 3 unknown 10.200.0.26 1261_3 - Te0/0/0/1 16033 32900 unknown 10.200.0.26 1265_3 - Te0/0/0/1 16034 32912 unknown 10.200.0.26 1501_3 - Te0/0/1/0 16037 3 unknown 10.200.0.26 1505_3 - Te0/0/1/0 16038 3 unknown Displayed 4 tunnel heads, 11 label P2P rewrites Displayed 0 tunnel heads, 0 label P2MP rewrites RP/0/RSP0/CPU0:A07-A9K-HK#sh mpls forwarding labels 16022 hardware ingress detail location 0/0/cpu0 Wed Nov 11 15:39:05.928 Beijing Local Outgoing Prefix Outgoing Next Hop Bytes Label Label or ID Interface Switched ------ ----------- ------------------ ------------ --------------- ------------ 16022 Pop 102 Te0/0/1/0 192.168.0.10 N/A Updated Nov 11 03:30:48.395 Version: 35, Priority: 2 MAC/Encaps: 14/14, MTU: 1500 Label Stack (Top -> Bottom): { Imp-Null } Packets Switched: 0 LEAF - HAL pd context : sub-type : MPLS, ecd_marked:0, has_collapsed_ldi:0, collapse_bwalk_required:0, ecdv2_marked:0 Leaf H/W Result: Leaf H/W Result on NP:0 Raw Data0: 0x11050803 1a030000 00000000 00000000 Raw Data1: 0x00000000 00000000 00000000 00000000 cb0 vpn_special: 0 vc_label: 0 evpn_label: 0 match: 1 rsvd: 0 valid: 1 cb1 p2mp_ip_lookup: 0 p2mp_or_tp_wrap: 0 tp: 0 igp_pref: 1 recursive: 0 non_recursive: 1 cb2 flow_label_dispose: 0 tp: 0 receive_entry_type: 0 vc_label_vpws: 0 fwd: 1 control_word_enabled: 0 imp_ttl_255: 0 recursive: 0 ecmp_size: 3 nr_fwd_entry nrldi_ptr: 0x1a0300 << prt should 0x00031a vpn_key: 0 stats_ptr: 0 ecmp_stats_base: 0 nrLDI eng ctx: flags: 0x1, proto: 2, npaths: 0, nbuckets: 1 ldi_tbl_idx: 0x31a, ecd_ref_cft: 0 pbts_ldi_tbl_idx: 0x0 NR-LDI H/W Result for path 0 [index: 0x31a (BE), common to all NPs]: Raw Data0: 0x91160002 8e020019 00000000 0003e961 Raw Data1: 0x00004004 0002a809 61c00000 00000000 ldi_resolve_control_byte0: bvi: 0 reserved: 0 match: 1 valid: 1 txadj_internal: 1 ldi_resolve_control_byte1: mldp: 0 default_action: 1 rx_adj: 1 te_IpFrr_adj: 0 label_1_valid: 0 label_2_valid: 0 local_label_valid: 1 ldpBkup_label_valid: 0 ldi_resolve_control_byte2: pwhe_nrldi: 0 spare: 0 ipldp_FRR_TE: 0 bvi: 0 np_bit_map: 0x02 label_stats_index: 0xa80961 igp_local_label: label_msb: 1001 label_lsb: 6 exp: 0 eos: 1 output_label: label_msb: 0 label_lsb: 4 exp: 0 eos: 0 Adj (non_te): tx_adj_ptr : 0x8e0200 (LE) rx_adj_ptr : 0x190000 (LE) TX H/W Result for NP:0 (index: 0x28e (BE)): << match tx prt 0x8e0200 Raw Data0: 0x91040000 0600dc05 00000000 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x0 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000 TX H/W Result for NP:1 (index: 0x28e (BE)): Raw Data0: 0x91040000 0600dc05 18006100 00000000 Raw Data1: 0x10f31138 ad600000 00000000 00000000 adj_resolve_control_byte0 reserved: 0 egr_uidb_internal: 1 match: 1 valid: 1 iptunl_adj: 0 adj_resolve_control_byte1 tx_adj_null0: 0 tx_punt: 0 tx_drop: 0 default_action: 1 pwhe: 0 spare: 0 adj_resolve_control_byte2 pwhe: 0 spare: 0 spare_cb: 0 flags gre_adj : 0 pwhe_cw: 0 uidb_index : 0x600 (LE) l3_mtu : 1500 adj_stats_index : 0x180061 dest_mac : 0x10f3.1138.ad60 ether reserved : 0000000000000000 RX H/W Result on NP:0 [Adj ptr:0x19 (BE)]: << match rx ptr 0x190000 Raw Data0: 0x91000000 00000060 040002c0 04000000 adj_resolve_control_byte0 match: 1 valid: 1 iptunl_adj: 0 remote_rack: 0 adj_resolve_control_byte1 adj_down: 0 mgscp_en: 0 rx_lag_hash_en: 0 rx_lag_adj: 0 pwhe: 0 adj_resolve_control_byte2 rx_lag_adj: 0 rx_adj_null0: 0 rp_destined: 0 rx_punt: 0 rx_drop: 0 sfp/vqi : 0x60 << come from which switch port egress np port : 0x400 if_handle : 0x40002c0 << check by "show controller pm" and "sh im database ifhandle" RX H/W Result on NP:1 [Adj ptr:0x19 (BE)]: Raw Data0: 0x91000000 00000060 040002c0 04000000 adj_resolve_control_byte0 match: 1 valid: 1 iptunl_adj: 0 remote_rack: 0 adj_resolve_control_byte1 adj_down: 0 mgscp_en: 0 rx_lag_hash_en: 0 rx_lag_adj: 0 pwhe: 0 adj_resolve_control_byte2 rx_lag_adj: 0 rx_adj_null0: 0 rp_destined: 0 rx_punt: 0 rx_drop: 0 sfp/vqi : 0x60 egress np port : 0x400 if_handle : 0x40002c0
Workaround
- Please Huawei fix the hash issue
- Set up a new tunnel and not take any forward-class, that the issue will recovery even if Huawei choose the LDP.
- Set PBTS on income port at HKBR, and match topmost label, then point traffics to correct forward-class.
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