ciscoconfparse BGP 在其中一个邻居上没有描述答案

【问题标题】：ciscoconfparse BGP no description on one of the neighborciscoconfparse BGP 在其中一个邻居上没有描述
【发布时间】：2020-06-20 06:02:37
【问题描述】：

我正在尝试使用 ciscoconfparse 将邻居、远程身份和描述提取到字典中。但是其中一个邻居没有描述。因此它不会返回值

任何人都可以帮助获取所有邻居值的正确方法


Config:
router bgp 42098001
 neighbor SERVER peer-group
 neighbor SERVER remote-as 64700
 neighbor 10.29.0.65 remote-as 1111
 neighbor 10.29.0.65 description to ZZZ
 neighbor 10.29.0.73 remote-as 2222
 neighbor 10.29.0.73 description to AAA
 neighbor 10.29.0.81 remote-as 3333
 neighbor 10.29.0.81 description to BBB
 neighbor 10.29.0.90 remote-as 4209800190
 neighbor 10.29.0.90 description to ABC 
 neighbor 10.232.122.170 remote-as 64700
 neighbor 10.232.122.170 description ABD
 neighbor 10.237.34.2 remote-as 4209800192
 neighbor 10.237.34.2 description to CCC

    bgp_as_name = confparse.find_all_children(r"^router bgp")

    for details in bgp_as_name:
        if 'remote-as' in details:
            remote_ip = details.strip().rsplit(' ')[1]
            as_number = details.strip().rsplit(' ')[3]
            #print(remote_ip)

        if 'description' in details:
            description = details.strip().rsplit(' ')[3:]
            desc = (' ').join(description)
            bgp_as_ip.update({'description': desc})
            print(bgp_as_ip)


    #BGP route-map
    bgp_route_map = confparse.find_all_children(r"^router bgp")
    for routemap in bgp_route_map:
        if 'route-map' in routemap:
            bgp_routemap_slice1 = routemap.strip().split(' ')[0:2]
            bgp_routemap_slice2 = routemap.strip().split(' ')[-2:]
            bgp_routemap_combine = bgp_routemap_slice1 + bgp_routemap_slice2
            bgp_route_map = bgp_routemap_combine[1:4]
            print(bgp_route_map)
            #bgp_as_ip.update({'route-map': bgp_route_map})
            #print(bgp_as_ip)

RESULT
{'remote_ip': '10.29.0.65', 'as_num': '1111', 'description': 'to ZZZ'}
{'remote_ip': '10.29.0.73', 'as_num': '2222', 'description': 'to AAA'}
{'remote_ip': '10.29.0.81', 'as_num': '3333', 'description': 'to BBB'}
{'remote_ip': '10.29.0.90', 'as_num': '4201', 'description': 'to ABC'}
{'remote_ip': '10.232.122.170', 'as_num': '64700', 'description': 'ABD'}
{'remote_ip': '10.237.34.2', 'as_num': '4209', 'description': 'to CCC'}

>缺少的信息是邻居SERVER

【问题讨论】：

SERVER 不是“真正的”邻居；它是一个对等组。此外，即使对于真正的邻居，描述也不是强制性的，因此您应该处理没有描述的邻居的情况。
感谢您的回复。我的目的是获取邻居信息（对等/远程，如，描述）并将其放入 excel 文件。我缺少配置中没有描述的邻居信息。如果没有描述，我试图输入“none”，但结果 bgp 配置的其余部分（如密码、路由映射）也得到“none”值。
你还有这个问题吗？如果没有，请继续发布您的解决方案，以免他们的问题没有得到解答

标签： python python-3.x list ciscoconfparse

【解决方案1】：

ciscoconfparse 有一个名为 re_match_typed() 的方法几乎可以解决这种情况...


from pprint import pprint

from ciscoconfparse import CiscoConfParse

config_list = """router bgp 42098001
 neighbor SERVER peer-group
 neighbor SERVER remote-as 64700
 neighbor 10.29.0.65 remote-as 1111
 neighbor 10.29.0.65 description to ZZZ
 neighbor 10.29.0.73 remote-as 2222
 neighbor 10.29.0.73 description to AAA
 neighbor 10.29.0.81 remote-as 3333
 neighbor 10.29.0.81 description to BBB
 neighbor 10.29.0.90 remote-as 4209800190
 neighbor 10.29.0.90 description to ABC
 neighbor 10.232.122.170 remote-as 64700
 neighbor 10.232.122.170 description ABD
 neighbor 10.237.34.2 remote-as 4209800192
 neighbor 10.237.34.2 description to CCC
""".splitlines()

parse = CiscoConfParse(config_list)


nested_dict = dict()
for obj_cmd in parse.find_objects(r"^\s+neighbor"):
    nei_ipv4 = obj_cmd.re_match_typed(r"^\s+neighbor\s+(\S+)", result_type=str)

    nei_new_addr = nested_dict.get(nei_ipv4, False)
    if nei_new_addr is False:
        nested_dict[nei_ipv4] = dict()

    if nested_dict[nei_ipv4].get("remote-as", None) is None:
        nested_dict[nei_ipv4]["remote-as"] = obj_cmd.re_match_typed(
            r"^\s*neighbor\s+{0}\s+remote-as\s+(\d+)\s*$".format(nei_ipv4),
            untyped_default=True,
            default=None,
        )

    if nested_dict[nei_ipv4].get("description", None) is None:
        nested_dict[nei_ipv4]["description"] = obj_cmd.re_match_typed(
            r"^\s*neighbor\s+{0}\s+description\s+(\S.*)\s*$".format(nei_ipv4),
            untyped_default=True,
            default=None,
        )

pprint(nested_dict)

运行这个，输出是……

{'10.232.122.170': {'description': 'ABD', 'remote-as': '64700'},
 '10.237.34.2': {'description': 'to CCC', 'remote-as': '4209800192'},
 '10.29.0.65': {'description': 'to ZZZ', 'remote-as': '1111'},
 '10.29.0.73': {'description': 'to AAA', 'remote-as': '2222'},
 '10.29.0.81': {'description': 'to BBB', 'remote-as': '3333'},
 '10.29.0.90': {'description': 'to ABC ', 'remote-as': '4209800190'},
 'SERVER': {'description': None, 'remote-as': '64700'}}

我重新格式化了输出，但更改示例以使用您的格式很简单......

【讨论】：