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How to setup: http://wiki.racktables.org/index.php/RackTablesAdminGuide#Configuring_CLI_gateways_to_network_devices |
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When I add string to function ios12ReadCDPStatus function ios12ReadCDPStatus ($input) { >>> echo "$input"; $ret = array(); foreach (explode ("\n", $input) as $line) it shows me result in the browser: ???????? User Access Verification Username: conf Password: ROUTER_NAME#terminal length 0 ROUTER_NAME#terminal no monitor ROUTER_NAME#show cdp neighbors detailConnection to ROUTER_NAME.sw.ru 23 port [tcp/telnet] succeeded! So - it could connect to device. But it seems, that command "show cdp neighbors" doesn't return anything. When I try to get live cdp for switch, I have got this result: ???????? User Access Verification Username: conf Password: SWITCH_NAME#terminal length 0 SWITCH_NAME#terminal no monitor SWITCH_NAME#show cdp neighbors detail ------------------------- Device ID: qqqqq(SSI182106XQ) Entry address(es): IP address: X.X.X.X Platform: N5K-C5548UP, Capabilities: Router Switch IGMP CVTA phone port Interface: TenGigabitEthernet1/51, Port ID (outgoing port): Ethernet1/29 Holdtime : 158 sec Version : Cisco Nexus Operating System (NX-OS) Software, Version 5.2(1)N1(8b) advertisement version: 2 Native VLAN: 1 Duplex: full Management address(es): IP address: X.X.X.X Unidirectional Mode: off ------------------------- Device ID: qqqq(SSI182106XQ) Entry address(es): IP address: X.X.X.X Platform: N5K-C5548UP, Capabilities: Router Switch IGMP CVTA phone port Interface: GigabitEthernet1/42, Port ID (outgoing port): mgmt0 I have "show cdp neighbors detail" output result. |
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I recall both CDP and LLDP were working OK for IOS regardless of what the remote devices were. Does LLDP fail too? Could you change the debug line to dump ($input) to show the original input text? |
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Yes, LLDP failes too. How can I change the debug line? If check the Page Source, it shows: <div class="msgbar"></div> <div class="pagebar">???????? User Access Verification Username: username Password: ROUTER_NAME#terminal length 0 ROUTER_NAME#terminal no monitor ROUTER_NAME#show cdp neighbors detailConnection to Router_NAME 23 port [tcp/telnet] succeeded! <form method=post id=importDPData name=importDPData action='?module=redirect&page=object&tab=livecdp&op=importDPData'> <input type=hidden name="object_id" Device information: HW Type: cisco 2821 SW Type: Cisco IOS 15.1 SW version: 15.1(4)M7 |
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Could you provide the full original text that the device returns for "show cdp neighbors detail"? |
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show_cdp_nei.txt (2,597 bytes) |
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In attached file "show_cdp_nei" |
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ios12ReadCDPStatus() parses that as follows: Array ( [gi0/0/0] => Array ( [0] => Array ( [device] => device_name [port] => GigabitEthernet1/47 ) ) [gi0] => Array ( [0] => Array ( [device] => device_name [port] => GigabitEthernet1/45 ) ) [gi0/0/2] => Array ( [0] => Array ( [device] => device_name [port] => GigabitEthernet0/0/3 ) ) [gi0/0/3] => Array ( [0] => Array ( [device] => device_name [port] => GigabitEthernet0/0/2 ) ) ) Are there any error messages on the Live CDP object tab? |
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No. Just blank white screen. As I wrote before, the array, which is sent to ios12ReadCDPStatus doesn't have cdp information. >>> User Access Verification Username: conf Password: ROUTER_NAME#terminal length 0 ROUTER_NAME#terminal no monitor ROUTER_NAME#show cdp neighbors detailConnection to ROUTER_NAME.sw.ru 23 port [tcp/telnet] succeeded! It can connect to device, but the output of show cdp neighbour command isn't appeared in program. When I do this for any switches - it works. |
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Could you study with a packet analyzer what happens after the IOS device prints "ROUTER_NAME#show cdp neighbors detail"? Does it or the RackTables server close the TCP connection? |
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It closes connection: 300 1.571996 SOURCE_IP_DEVICE DESINATION_IP_OF_RACKTABLES TCP 56 23?36912 [FIN, PSH, ACK] Seq=173 Ack=88 Win=4042 Len=0 |
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Maybe the device fails to implement TCP properly, this is not common for IOS but sometimes happens. Does it enable to work around if you set $params[0]['protocol'] to 'telnet'? If so, does it work set to 'netcat' if you update the device to the latest IOS version? |
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Neither 'telnet' or 'netcat' doesn't work. ( On these devices are installed one of the latest IOS. It doesn't work ONLY on routers. Any switches: Nexus, Dell, Cisco Catalyst work correctly. |
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Could you troubleshoot locally and tell where exactly the difference appears between a working (switch) and a non-working (router) telnet sessions? |
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I will try to do it after 20th of January. |
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I've upgraded racktables to 0.20.11 from github and now this feature works. This ticket can be closed. |
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Glad to hear! Closing now. |
- Anonymous
