TextFSM Question

Hi , This is just a question . I am trying to replicate what I see on NTC templates on a huawei routers we use .

In [22]: my_device = { "host":"10.170.17.46","username":"abooda","password":"password","device_type": "huawei",}

In [23]: net_connect2 = Netmiko(**my_device)  

In [24]: output = net_connect2.send_command("display arp",use_textfsm=True) 

In [25]: print(output)
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE        INTERFACE   VPN-INSTANCE 
                                          VLAN/CEVLAN PVC                      
------------------------------------------------------------------------------
10.170.17.46    346a-c214-8503            I -         GE0/0/9
10.170.17.41    6400-f175-d080  3         D-0         GE0/0/9
172.16.7.2      346a-c214-8501            I -         Vlanif7
172.16.7.5      0c8d-dbb9-cbf4  20        D-0         GE0/0/0
                                             7/-
172.16.7.6      0c8d-dbb9-a740  20        D-0         GE0/0/0
                                             7/-
172.16.7.4      0018-0a4f-0001  5         D-0         GE0/0/0
                                             7/-
172.16.7.3      4c00-826a-c77e  5         D-0         GE0/0/0
                                             7/-
------------------------------------------------------------------------------
Total:7         Dynamic:5       Static:0     Interface:2    

In [26]: 

I tried to create a template similar to the hp procurve switch (display arp) , but i am not getting structured data back. Any ideas if what if I am trying to replicate is right or this is not the way TFM works ?

my template :

$ cat huawei_display_arp.template 
Value IPADDRESS (\d+.\d+.\d+.\d+)
Value MAC ADDRESS (\w+-\w+-\w+)
Value EXPIRE(M) (\d+)
Value TYPE (\S+)
Value INTERFACE (\S+)
Value VPN-INSTANCE (\S+)

Start
^${IPADDRESS}\s+${MAC ADDRESS}\s+${EXPIRE(M)}\s+${TYPE}\s+${INTERFACE}\s+${VPN-INSTANCE} -> Record

Actual /similar hp comware tfm template

$ cat hp_comware_display_arp.template 
Value IPADDRESS (\d+.\d+.\d+.\d+)
Value MACADDRESS (\w+-\w+-\w+)
Value VLAN (\S+|\d+)
Value INTERFACE (\S+)
Value AGING (\d+)
Value TYPE (\S+)

Start
  ^${IPADDRESS}\s+${MACADDRESS}\s+${VLAN}\s+${INTERFACE}\s+${AGING}\s+${TYPE} -> Record

[Abed1985]

just leaving this comment here incase anybody need to know what i eventually did to get a structured format from display lldp neighbor on huawei routers

`I have parsed what I need using the below :

cat huawei_display_lldp_neighbor.template

`Value SYSTEM_NAME (\S+) Value MANAGEMENT_ADDRESS (\d+.\d+.\d+.\d+) Value MANUFACTURER_NAME (.) Value MODEL_NAME (.)

Start ^System name.+:${SYSTEM_NAME} ^Management address.+:\s${MANAGEMENT_ADDRESS} ^Manufacturer name.+:${MANUFACTURER_NAME} ^Model name.+:${MODEL_NAME} -> Record`

Sample output:

python3 test-huawei-lldp.py [{‘system_name’: ‘tsa-2960-sw01’, ‘management_address’: ‘192.168.0.240’, ‘manufacturer_name’: ‘Cisco Systems, Inc.’, ‘model_name’: ‘WS-C2960S-48LPS-L’}]`

[Abed1985]

Just one last question 😃 do you think such output could be parsed with regex on the same approach , I am interested in the device( system description) under each neighbor. probably I need alot of time to get around this output … thanks I guess i will use the approach advised by Kirk above. Any hint is welcome though

display lldp neighbor GigabitEthernet0/0/0 has 0 neighbors

GigabitEthernet0/0/1 has 1 neighbors:

Neighbor index : 1 Chassis type :macAddress Chassis ID :ecb1-d7e6-e5c0 Port ID type :local Port ID :26 Port description :26 System name :ARCH-ADL-02 System description :HP J9772A 2530-48G-PoEP Switch, revision YA.15.12.0015, ROM YA.15.12 (/ws/swbuildm/YA_rel_knoxville_qaoff/code/build/lakes(swbuildm_YA_rel_knoxville_qaoff_rel_knoxville)) System capabilities supported :bridge System capabilities enabled :bridge Management address type :ipV4 Management address : 10.0.100.4
Expired time :94s

Port VLAN ID(PVID) :1 Protocol identity :

Auto-negotiation supported :Yes Auto-negotiation enabled :Yes
OperMau :speed(1000)/duplex(Full)

Power port class :PD PSE power supported :No PSE power enabled :No PSE pairs control ability:No Power pairs :Unknown Port power classification:Unknown

Link aggregation supported:No Link aggregation enabled :No Aggregation port ID :0 Maximum frame Size :0

MED Device information
Device class :Network Connectivity

HardwareRev :NA FirmwareRev :NA SoftwareRev :NA SerialNum :NA Manufacturer name :NA Model name :NA Asset tracking identifier :NA

Power Type :PSE PoE PSE power source :Unknown Port PSE Priority :Low Port Available power value:130 GigabitEthernet0/0/2 has 0 neighbors

GigabitEthernet0/0/3 has 0 neighbors

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