AOS 8 Debugging

Example 1: Debugging a misbehaving Switchport

In our example, port 4/1/17 is misbehaving after configuring UNP. We don't know anything that's wrong with our configuration, and we weren't able to find a solution yet.

Our next step is information gathering, either to find a way to fix it, or just to forward it to the next Alcatel Employee, Support or whatever.

Basic Information

SW> show configuration snapshot

SW> show tech-support layer2

SW> show tech-support layer3

Advanced Steps

Please keep in mind: If you want to launch dshell on any other switch chassis than the master, you'll first need to connect to that specific chassis. You can get the IP-Address with the command: debug show virtual-chassis connection

SW> su

SHASTA #-> bshell

General Port information

BCM.0> ps

Output:

                ena/    speed/ link auto    STP                  lrn  inter   max  loop
          port  link    duplex scan neg?   state   pause  discrd ops   face frame  back
      ge0(  2)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge1(  1)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge2(  3)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge3(  4)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge4(  6)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge5(  5)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge6(  7)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
      ge7(  8)  down     -       SW  Yes    Block          None   FA  SGMII  9216
      ge8( 10)  down     -       SW  Yes    Block          None   FA  SGMII  9216
      ge9(  9)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge10( 11)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge11( 12)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge12( 14)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge13( 13)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge14( 15)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge15( 16)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge16( 18)  up      1G  FD   SW  Yes    Block          None    C  SGMII  9216
     ge17( 17)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216
     ge18( 19)  up      1G  FD   SW  Yes    Block          None   FA  SGMII  9216

Specific Port information

As we've seen, our problem child ge16( 18) [Port 4/1/17]

BCM.0> d port 18 1

PORT.ipipe0[17]:

<VT_PORT_TYPE_SELECT_2=1,VT_PORT_TYPE_SELECT=1,VT_MISS_DROP=0,VT_KEY_TYPE_2=5,VT_KEY_TYPE=4,VT_ENABLE=0,
VNTAG_ACTIONS_IF_PRESENT=0,VNTAG_ACTIONS_IF_NOT_PRESENT=0,VLAN_PROTOCOL_DATA_INDEX=0x11,VLAN_PRECEDENCE=0,
VFP_PORT_GROUP_ID=0,VFP_ENABLE=1,V6L3_ENABLE=1,V6IPMC_L2_ENABLE=0,V6IPMC_ENABLE=1,V4L3_ENABLE=1,V4IPMC_L2_ENABLE=0,
V4IPMC_ENABLE=1,USE_PORT_TABLE_GROUP_ID=0,USE_IVID_AS_OVID=0,USE_INNER_PRI=0,URPF_MODE=0,URPF_DEFAULTROUTECHECK=0,
TX_DEST_PORT_ENABLE=0,TX_DEST_PORT=0,TRUST_INCOMING_VID=1,TRUST_DSCP_V6=1,TRUST_DSCP_V4=1,TRUST_DSCP_PTR=0x11,
TRUST_DOT1P_PTR=0,TRILL_ENABLE=0,TAG_ACTION_PROFILE_PTR=0,SVC_METER_OFFSET_MODE=0,SVC_METER_INDEX=0,
SUBNET_BASED_VID_ENABLE=1,RTAG7_PORT_LBN=0,RESERVED_2=0,RESERVED_1=0,
RESERVED_0=0,RESERVED=0,REMOVE_HG_HDR_SRC_PORT=0,REMOTE_CPU_EN=0,
PVLAN_ENABLE=0,PTP_LABEL_RANGE_INDEX_2=0,PTP_LABEL_RANGE_INDEX_1=0,PROTOCOL_PKT_INDEX=1,PROHIBITED_DOT1P=0, 
PRI_MAPPING=0xfac688,PORT_VID=0x910,PORT_TYPE=0,PORT_PRI=0,PORT_OPERATION=0,PORT_DIS_UNTAG=0,PORT_DIS_TAG=0,
PORT_BRIDGE=0,PHB_FROM_ETAG=0,PASS_CONTROL_FRAMES=0,PARITY_3=1,PARITY_2=1,PARITY_1=1,PARITY_0=0,OVID=0x910,
OUTER_TPID_VERIFY=0,OUTER_TPID_ENABLE=1,OPRI=0,OCFI=0,OAM_ENABLE=1,NIV_VIF_LOOKUP_ENABLE=0,NIV_VIF_ID=0,
NIV_UPLINK_PORT=0,NIV_RPF_CHECK_ENABLE=0,NIV_NAMESPACE=0,MY_MODID=0xc,MPLS_ENABLE=1,MIRROR=0,MIM_TERM_ENABLE=1,
MIM_MC_TERM_ENABLE=0,MIM_ENABLE_DEFAULT_NETWORK_SVP=0,MH_INGRESS_TAGGED_SEL=0,MDL_BITMAP=0,MAC_IP_BIND_LOOKUP_MISS_DROP=0,
MAC_BASED_VID_ENABLE=1,L2GRE_VPNID_LOOKUP_KEY_TYPE=1,L2GRE_TERMINATION_ALLOWED=1,L2GRE_DEFAULT_SVP_ENABLE=0,
IVID=0,IPRI_MAPPING=0xfac688,IPRI=0,IPMC_DO_VLAN=1,ING_ICNM_PROCESS_ENABLE=0,IEEE_802_1AS_ENABLE=0,
ICFI_1_MAPPING=1,ICFI_0_MAPPING=0,ICFI=0,HIGIG_TRUNK_ID=0,HIGIG_TRUNK=0,HIGIG2=0,FP_PORT_FIELD_SEL_INDEX=0x11,
FLEX_CTR_POOL_NUMBER=0,FLEX_CTR_OFFSET_MODE=0,FLEX_CTR_BASE_COUNTER_IDX=0,FILTER_ENABLE=1,ETAG_PCP_DE_SOURCE=0,
ETAG_PCP=0,ETAG_DE=0,EN_IFILTER=1,ENABLE_1588OMPLS=0,ECC_3=0x3d,ECC_2=0x74,ECC_1=0x78,
ECC_0=0x21,ECCP_3=0xbd,ECCP_2=0xf4,ECCP_1=0xf8,
ECCP_0=0x21,DUAL_MODID_ENABLE=0,DROP_BPDU=0,DOT1P_REMAP_POINTER=0,DISCARD_IF_VNTAG_PRESENT=0,
DISCARD_IF_VNTAG_NOT_PRESENT=0,DISABLE_VLAN_CHECKS=0,DISABLE_STATIC_MOVE_DROP=0,CTRL_PROFILE_INDEX_1588=0,
COPY_CORE_IS_IS_TO_CPU=0,CML_FLAGS_NEW=8,CML_FLAGS_MOVE=8,CML_BMAC_NEW=0,CML_BMAC_MOVE=0,CLASS_BASED_SM_ENABLE=0,
CFI_AS_CNG=0xf,CFI_1_MAPPING=1,CFI_0_MAPPING=0,ALLOW_TRILL_FRAMES=0,ALLOW_SRC_MOD=0,ALLOW_NON_TRILL_FRAMES=0>

Change variables

BCM.0> mod port 18 1 VARIABLE=value