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# Copyright (C) 2014 Nippon Telegraph and Telephone Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys
import telnetlib
from constant import *
PASSWORD = "zebra"
CONN_PASSWORD = "hogehoge"
QLPORT = 2605
def login(host):
tn = telnetlib.Telnet(host, QLPORT)
tn.read_until("Password: ")
tn.write(PASSWORD + "\n")
tn.write("enable\n")
tn.read_until("bgpd#")
return tn
def logout(tn):
tn.write("exit\n")
tn.read_all()
def add_neighbor(tn, as_number, neighbor_address, remote_as):
tn.write("configure terminal\n")
tn.write("router bgp "+str(as_number)+"\n")
tn.write("neighbor " + neighbor_address + " remote-as " + remote_as + "\n")
tn.write("neighbor " + neighbor_address + " password " + CONN_PASSWORD + "\n")
tn.write("exit\n")
tn.write("exit\n")
tn.read_until("bgpd#")
def add_neighbor_metric(tn, as_number, neighbor_address, metric):
tn.write("configure terminal\n")
tn.write("router bgp "+str(as_number)+"\n")
tn.write("neighbor " + neighbor_address + " route-map MED" + metric + " out\n")
tn.write("exit\n")
tn.write("exit\n")
tn.read_until("bgpd#")
def add_network(tn, as_number, network, use_ipv6=False):
tn.write("configure terminal\n")
tn.write("router bgp "+str(as_number)+"\n")
if use_ipv6:
tn.write("address-family ipv6\n")
tn.write("network "+ network + " \n")
tn.write("exit\n")
else:
tn.write("network "+ network + " \n")
tn.write("exit\n")
tn.write("exit\n")
tn.read_until("bgpd#")
def add_metric(tn, metric, network):
tn.write("configure terminal\n")
tn.write("access-list 1 permit " + network + " 0.0.0.255\n")
tn.write("route-map MED" + metric + " permit 10\n")
tn.write("match ip address 1\n")
tn.write("set metric " + metric + "\n")
tn.write("route-map MED" + metric + " permit 10\n")
tn.write("set metric\n")
tn.read_until("bgpd(config-route-map)#")
tn.write("exit\n")
tn.write("exit\n")
return tn
def show_config(tn):
tn.write("show run\n")
print tn.read_until("bgpd#")
tn.write("exit\n")
print tn.read_all()
def show_rib(tn, af=IPv4):
if af == IPv4:
tn.write("show ip bgp\n")
elif af == IPv6:
tn.write("show bgp ipv6\n")
else:
print "invalid af: ", af
return
tn.read_until(" Network Next Hop Metric LocPrf Weight Path")
rib = tn.read_until("bgpd#")
return rib_parser(rib)
def clear_ip_bgp(tn):
tn.write("clear ip bgp *\n")
tn.read_until("bgpd#")
def rib_parser(rib):
lines = rib.split("\n")
paths = []
for line in lines:
path = {}
if line[0] == "*":
elems = line.split()
path['Network'] = elems[1]
path['Next Hop'] = elems[2]
if len(path) > 0:
paths.append(path)
return paths
def lookup_prefix(tn, prefix, af):
if af == IPv4:
tn.write("show ip bgp " + prefix + "\n")
elif af == IPv6:
tn.write("show bgp ipv6 " + prefix + "\n")
else:
print "invalid af: ", af
return
info = tn.read_until("bgpd#")
lines = info.split("\n")
paths = []
if len(lines) > 1 and "BGP routing table entry for " + prefix in lines[1]:
idx_nw = -1
nexthop = ''
# check if the prefix is originated route by its own or not.
for idx, line in enumerate(lines):
if "from" in line:
nexthop = line.split()[0]
idx_nw = idx
if nexthop == "0.0.0.0":
return paths
path = {}
path['aspath'] = lines[idx_nw - 1].strip().split(" ")
path['Network'] = prefix
path['Next Hop'] = nexthop
paths.append(path)
return paths
def check_community(tn, addr, community, af=IPv4):
if af == IPv4:
tn.write("show ip bgp community " + community + "\n")
elif af == IPv6:
tn.write("show bgp ipv6 community " + community + "\n")
else:
print "invalid af: ", af
return
result = tn.read_until("bgpd#")
for line in result.split("\n"):
if addr in line:
return True
return False
def check_ext_community(tn, addr, community, af=IPv4):
if af == IPv4:
tn.write("show ip bgp " + addr + "\n")
elif af == IPv6:
tn.write("show bgp ipv6 " + addr + "\n")
else:
print "invalid af: ", af
return
result = tn.read_until("bgpd#")
for line in result.split("\n"):
if "Extended Community:" in line:
extcomms = line.split()[2:]
for e in extcomms:
if community == e:
return True
return False
def check_med(tn, addr, med, af=IPv4):
if af == IPv4:
tn.write("show ip bgp " + addr[0] + "\n")
elif af == IPv6:
tn.write("show bgp ipv6 " + addr[0] + "\n")
else:
print "invalid af: ", af
return
result = tn.read_until("bgpd#")
for line in result.split("\n"):
if "metric" in line:
if str(med) in line.split()[3]:
return True
return False
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