Minor improvement to get_arp processing on NXOS SSH (#639)

* Minor improvement to get_arp processing on NXOS SSH

napalm/nxos_ssh/nxos_ssh.py

@@ -1055,7 +1055,9 @@ def get_arp_table(self):
         arp_entries = arp_list[1].strip()
         for line in arp_entries.splitlines():
             if len(line.split()) >= 4:
-                address, age, mac, interface = line.split()[:4]
+                # Search for extra characters to strip, currently strip '*', '+', '#', 'D'
+                line = re.sub(r"\s+[\*\+\#D]{1,4}\s*$", "", line, flags=re.M)
+                address, age, mac, interface = line.split()
             else:
                 raise ValueError("Unexpected output from: {}".format(line.split()))
 

test/nxos_ssh/mocked_data/test_get_arp_table/fhrp_entries/expected_result.json

@@ -0,0 +1,86 @@
+[
+    {
+        "interface": "Ethernet3/36",
+        "mac": "F4:CF:E2:E0:CF:41",
+        "ip": "172.20.10.82",
+        "age": 123.0
+    },
+    {
+        "interface": "Ethernet1/5",
+        "mac": "00:2C:C8:7D:74:3F",
+        "ip": "172.16.252.10",
+        "age": 344.0
+    },
+    {
+        "interface": "Ethernet1/7",
+        "mac": "2C:5A:0F:F0:45:7F",
+        "ip": "172.16.253.2",
+        "age": 174.0
+    },
+    {
+        "interface": "Ethernet1/9",
+        "mac": "00:2C:C8:7D:75:7F",
+        "ip": "172.20.110.6",
+        "age": 551.0
+    },
+    {
+        "interface": "Ethernet1/11",
+        "mac": "70:DF:2F:07:20:E4",
+        "ip": "172.16.200.46",
+        "age": 8.0
+    },
+    {
+        "interface": "Vlan10",
+        "mac": "00:00:0C:07:AC:0A",
+        "ip": "192.32.10.1",
+        "age": 443.0
+    },
+    {
+        "interface": "Vlan10",
+        "mac": "40:55:39:22:CC:C1",
+        "ip": "192.32.10.3",
+        "age": 935.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:E0:86:02:A5:E9",
+        "ip": "192.6.125.22",
+        "age": 692.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:E0:86:02:C3:D0",
+        "ip": "192.6.125.23",
+        "age": 579.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:1B:D5:02:A7:44",
+        "ip": "192.6.125.25",
+        "age": 361.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:50:56:9A:79:DD",
+        "ip": "192.6.125.32",
+        "age": 290.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:24:81:E1:E5:12",
+        "ip": "192.6.125.36",
+        "age": 26.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:25:B3:23:F3:5E",
+        "ip": "192.6.125.37",
+        "age": 3.0
+    },
+    {
+        "interface": "Vlan125",
+        "mac": "00:50:56:B2:00:3F",
+        "ip": "192.6.125.44",
+        "age": 391.0
+    }
+]

test/nxos_ssh/mocked_data/test_get_arp_table/fhrp_entries/show_ip_arp_vrf_default___exc_INCOMPLETE.txt

@@ -0,0 +1,22 @@
+Flags: * - Adjacencies learnt on non-active FHRP router
+       + - Adjacencies synced via CFSoE
+       # - Adjacencies Throttled for Glean
+       D - Static Adjacencies attached to down interface
+
+IP ARP Table for context default
+Total number of entries: 2302
+Address         Age       MAC Address     Interface
+172.20.10.82    00:02:03  f4cf.e2e0.cf41  Ethernet3/36
+172.16.252.10   00:05:44  002c.c87d.743f  Ethernet1/5
+172.16.253.2    00:02:54  2c5a.0ff0.457f  Ethernet1/7
+172.20.110.6    00:09:11  002c.c87d.757f  Ethernet1/9
+172.16.200.46   00:00:08  70df.2f07.20e4  Ethernet1/11
+192.32.10.1     00:07:23  0000.0c07.ac0a  Vlan10
+192.32.10.3     00:15:35  4055.3922.ccc1  Vlan10
+192.6.125.22    00:11:32  00e0.8602.a5e9  Vlan125
+192.6.125.23    00:09:39  00e0.8602.c3d0  Vlan125
+192.6.125.25    00:06:01  001b.d502.a744  Vlan125
+192.6.125.32    00:04:50  0050.569a.79dd  Vlan125          *
+192.6.125.36    00:00:26  0024.81e1.e512  Vlan125          *
+192.6.125.37    00:00:03  0025.b323.f35e  Vlan125          *
+192.6.125.44    00:06:31  0050.56b2.003f  Vlan125