Michael McNamara

Nortel has just recently released v5.1 software for their Ethernet Routing Switch (ERS) 5500 Series.

There are some enhancements that affect how ADAC/LLDP function on the ERS 5520 switch. From the release notes;

IEEE 802.1ab and ADAC linkage
Nortel introduced the 802.1ab and Auto Detection Auto Configuration(ADAC) features to Release 5.0 to address converged applications. In Release 5.1, the functionality of 802.1ab and ADAC is combined: ADAC uses 802.1ab/LLDP as the detection mechanism to determine the identity of the attached device (that is, a Nortel IP phone that supports 802.1ab Media Endpoint Devices type, length, and value descriptions [MED TLV]). The Auto Configuration functionality of ADAC applies the configuration to the port.
Configurable using NNCLI, ACG, and Device Manager.

It looks like it will no longer be necessary to maintain the list of MAC prefixes for all Nortel Internet Telephones. If you recall from some of my previous posts I needed to manually update the list of MAC prefixes used by my ERS 5520 switches in order to get many of my i2002/i2004 Internet Telephones to be detected properly. The default list of MAC prefixes usually didn't cover all the i2002/i2004/i2007/1140e Internet Telephones I had installed throughout my organization. In previous articles we enabled ADAC like so;

5520-48T-PWR (config)# adac voice-vlan 50
5520-48T-PWR (config)# adac op-mode tagged-frames
5520-48T-PWR (config)# adac uplink-port 48
5520-48T-PWR (config)# adac mac-range-table low-end 00:18:b0:00:00:00 high-end 00:18:b0:ff:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:16:ca:00:00:00 high-end 00:16:ca:ff:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:17:65:00:00:00 high-end 00:17:65:ff:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:0a:e4:75:00:00 high-end 00:0a:e4:75:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:14:c2:00:00:00 high-end 00:14:c2:ff:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:19:69:00:00:00 high-end 00:19:69:ff:ff:ff
5520-48T-PWR (config)# adac mac-range-table low-end 00:19:e1:00:00:00 high-end 00:19:e1:ff:ff:ff
5520-48T-PWR (config)# adac enable

I haven't actually tested this myself yet but supposedly if LLDP detects an Internet Telephone it will pass that information to ADAC without the need of evaluating the device's MAC address.

The 5.1 release also now supports the 1000Base-BX SFP;

BX SFP support
Many customers have high density gigabit requirements, but lack the fiber density to deploy. BX SFPs helps alleviate this issue by allowing a single strand of fiber to facilitate communication.
Nortel introduces support for 1000BaseBX10 module with release 5.1. The modules are single fiber, bidirectional SFP transceivers. Two types of modules are available:
• 1310nm (BX10-U) transceiver
• 1490nm (BX10-D) transceiver
The 1000BaseBX10-D device is always connected to a 1000BaseBX10-U device with a single strand of standard single-mode fiber. The operating transmission range is up to 10 km. The fiber uses a GBIC LC connector on each end.
If the 1000BaseBX10-U is not connected to the 1000BaseBX10-D device, the signals are not received properly and the Link LED does not illuminate. You can configure BX SFP Support through the NNCLI, ACG, or Device Manager.

The 1000BASE-BX bidirectional SFPs provide Gigabit Ethernet connectivity over a single fiber.

As shown in the figure, the transmit (Tx) and receive (Rx) paths share the same fiber by using two different wavelengths. One model transmits at 1310 nm and receives at 1490 nm, while the mating model transmits at 1490 nm and receives at 1310 nm. You can only connect a mating pair.

You can use 1000BASE-BX SFPs to double the number of your fiber links. For example, if you have 20 installed fiber pairs with 20 conventional ports connected, you can use 1000BASE-BX SFPs to expand to 40 ports, using the same fiber.

The long wavelength optical transceivers used in these models provide variable distance ranges using single mode fiber optic cabling.

Cheers!

In my previous post I outlined all the commands that you would need to configure a Nortel Ethernet Routing Switch 5520 to support deploying Nortel's i2002/i2004 Internet Telephones using LLDP-MED in conjunction with ADAC (Automatic Detection and Automatic Configuration). If you followed the steps your probably well on your way to getting things work. Unfortunately things can sometimes go wrong even with the best documentation and understanding of the product.

In this post I'm going to outline some of the basic commands you can use to troubleshoot any issues you might have between the ERS5520 and the i2002/i2004 phones.

Q. How can I check the log file?
A. show logging

ERS-5520#show logging
Type Time Idx Src Message
---- ----------------------- ---- --- -------
S 00:00:00:00 1 NVR SNTP: Could not sync to NTP servers.
S 2007-04-05 17:18:08 GMT 2 NVR SNTP: Could not sync to NTP servers.
S 2007-04-05 17:22:07 GMT 3 NVR Audit data initialized - incorrect magic number: 0xffffffff
I 2007-04-19 01:21:03 GMT 4 Web server starts service on port 80.
I 2007-04-19 01:21:19 GMT 5 IGMP: Unknown Multicast Filter disabled
I 2007-04-19 01:21:19 GMT 6 PoE Port Detection Status: Port 1 Status: Delivering Power
I 2007-04-19 01:21:22 GMT 7 PoE Port Detection Status: Port 35 Status: Delivering Power
I 2007-04-19 01:21:49 GMT 8 Port 0/47 reenabled by VLACP
I 2007-04-19 01:21:49 GMT 9 Port 0/48 reenabled by VLACP
I 2007-04-19 01:23:05 GMT 10 SNTP: First synchronization successful.
I 2007-04-19 01:23:18 GMT 11 Warm Start Trap
I 2007-04-19 01:23:19 GMT 12 Link Up Trap Port: 1
I 2007-04-19 01:23:20 GMT 13 Trap: pethPsePortOnOffNotification
I 2007-04-19 01:23:20 GMT 14 Trap: bsAdacPortConfigNotification for Port: 47, Config: Applied

Q. How can I check the state of a port?
A. show interfaces

ERS-5520#show interfaces 47,48
Status Auto Flow
Port Trunk Admin Oper Link LinkTrap Negotiation Speed Duplex Control
---- ----- ------- ---- ---- -------- ----------- -------- ------ -------
47 1 Enable Up Up Enabled Enabled 1000Mbps Full Asymm
48 1 Enable Up Up Enabled Enabled 1000Mbps Full Asymm

Q. How can I check the VLACP state of a port?
A. show vlacp interface

ERS-5520#show vlacp interface 47,48
===============================================================================
VLACP Information
===============================================================================
PORT ADMIN OPER HAVE FAST SLOW TIMEOUT TIMEOUT ETH MAC
ENABLED ENABLED PARTNER TIME TIME TYPE SCALE TYPE ADDRESS
-------------------------------------------------------------------------------
0/47 true true yes 500 30000 short 3 8103 01:80:c2:00:11:00
0/48 true true yes 500 30000 short 3 8103 01:80:c2:00:11:00

Q. How can I check what FDB entries have been learned on a specific port?
A. show mac-address-table port

ERS-5520#show mac-address-table port 47
Mac Address Table Aging Time: 300
Number of addresses: 9

MAC Address Source MAC Address Source
----------------- -------- ----------------- --------
00-00-5E-00-01-01 Trunk: 1 00-15-40-45-68-00 Trunk: 1
00-17-D1-57-30-00 Trunk: 1 00-17-D1-57-30-10 Trunk: 1
00-17-D1-57-32-03 Trunk: 1 00-18-B0-CC-F0-00 Trunk: 1
00-18-B0-CC-F0-10 Trunk: 1 00-18-B0-CC-F2-01 Trunk: 1
00-1B-25-4C-74-00 Trunk: 1

Q. How can I check the FDB table for a specific MAC address?
A. show mac-address-table address

ERS-5520#show mac-address-table address 00:18:b0:cc:f0:10
Mac Address Table Aging Time: 300
Number of addresses: 1

MAC Address Source MAC Address Source
----------------- -------- ----------------- --------
00-18-B0-CC-F0-10 Trunk: 1

Q. How can I check to see if ADAC has been configured/enabled?
A. show adac

ERS-5520#show adac
ADAC Global Configuration
---------------------------------------
ADAC: Enabled
Operating Mode: Tagged Frames
Traps Control Status: Enabled
Voice-VLAN ID: 12
Call Server Port: None
Uplink Port: 48

Q. How can I check to see if ADAC has been applied to a specific port?
A. show adac interface

ERS-5520#show adac interface 20
Port Auto-Detection Auto-Configuration
---- -------------- ------------------
20 Enabled Applied

Q. How can I check to see the LLDP information with a specific port?
A. show lldp port neighbor detail

ERS-5520#show lldp port 20 neighbor detail
-------------------------------------------------------------------------------
lldp neighbor
-------------------------------------------------------------------------------
Port: 20 Index: 5 Time: 8 days, 13:47:49
ChassisId: Network address ipV4 192.168.100.101
PortId: MAC address 00:17:65:ff:e0:fc
SysCap: TB / TB (Supported/Enabled)
PortDesc: Nortel IP Phone
SysDescr: Nortel IP Telephone 2002, Firmware:0604DAS


PVID: 0 PPVID Supported: not supported(0)
VLAN Name List: none PPVID Enabled: none

Dot3-MAC/PHY Auto-neg: supported/enabled OperMAUtype: 100BaseTXFD
PSE MDI power: not supported/disabled Port class: PD
PSE power pair: signal/not controllable Power class: 2
LinkAggr: not aggregatable/not aggregated AggrPortID: 0
MaxFrameSize: 1522
PMD auto-neg: 10Base(T, TFD), 100Base(TX, TXFD)

MED-Capabilities: CNLDI / CNDI (Supported/Current)
MED-Device type: Endpoint Class 3
MED-Application Type: Voice VLAN ID: 12
L2 Priority: 6 DSCP Value: 46 Tagged Vlan, Policy defined
Med-Power Type: PD Device Power Source: Unknown
Power Priority: High Power Value: 5.4 Watt
HWRev: FWRev: 0604DAS
SWRev: SerialNumber:
ManufName: Nortel-01 ModelName: IP Phone 2002
AssetID:
-------------------------------------------------------------------------------
Port: 20 Index: 6 Time: 8 days, 13:48:20
ChassisId: Network address ipV4 10.119.241.50
PortId: MAC address 00:17:65:ff:e0:fc
SysCap: TB / TB (Supported/Enabled)
PortDesc: Nortel IP Phone
SysDescr: Nortel IP Telephone 2002, Firmware:0604DAS


PVID: 0 PPVID Supported: not supported(0)
VLAN Name List: 12 PPVID Enabled: none

Dot3-MAC/PHY Auto-neg: supported/enabled OperMAUtype: 100BaseTXFD
PSE MDI power: not supported/disabled Port class: PD
PSE power pair: signal/not controllable Power class: 2
LinkAggr: not aggregatable/not aggregated AggrPortID: 0
MaxFrameSize: 1522
PMD auto-neg: 10Base(T, TFD), 100Base(TX, TXFD)

MED-Capabilities: CNLDI / CNDI (Supported/Current)
MED-Device type: Endpoint Class 3
MED-Application Type: Voice VLAN ID: 12
L2 Priority: 6 DSCP Value: 46 Tagged Vlan, Policy defined
Med-Power Type: PD Device Power Source: Unknown
Power Priority: High Power Value: 5.4 Watt
HWRev: FWRev: 0604DAS
SWRev: SerialNumber:
ManufName: Nortel-01 ModelName: IP Phone 2002
AssetID:
-------------------------------------------------------------------------------
Sys capability: O-Other; R-Repeater; B-Bridge; W-WLAN accesspoint; r-Router;
T-Telephone; D-DOCSIS cable device; S-Station only.
Med Capabilities-C: N-Network Policy; L-Location Identification; I-Inventory;
S-Extended Power via MDI - PSE; D-Extended Power via MDI - PD.

Those are some of the commands that you might have to execute if you needed to perform troubleshooting between an ERS5520 and a i2002/i2004 phone.

Your DHCP server logs will be your friend during your troubleshooting. If you don't see the phone making a DHCP request (or a request in the proper VLAN) then you should check that ADAC was applied to the switch port. ADAC is the component that will automatically add the switch port (the switch port the phone is connected to) into the Voice VLAN. If ADAC is not applied (or enabled) on the port then you'll be able to see that the switch port in question is only a member of the Data VLAN. You need to remember that ADAC works on MAC address ranges. You need to check that the MAC address of your phone is in the ADAC MAC address table.

5520-48T-PWR#show adac mac-range-table
Lowest MAC Address Highest MAC Address
------------------------ -------------------------
00-0A-E4-01-10-20 00-0A-E4-01-23-A7
00-0A-E4-01-70-EC 00-0A-E4-01-84-73
00-0A-E4-01-A1-C8 00-0A-E4-01-AD-7F
00-0A-E4-01-DA-4E 00-0A-E4-01-ED-D5
00-0A-E4-02-1E-D4 00-0A-E4-02-32-5B
00-0A-E4-02-5D-22 00-0A-E4-02-70-A9
00-0A-E4-02-D8-AE 00-0A-E4-02-FF-BD
00-0A-E4-03-87-E4 00-0A-E4-03-89-0F
00-0A-E4-03-90-E0 00-0A-E4-03-B7-EF
00-0A-E4-04-1A-56 00-0A-E4-04-41-65
00-0A-E4-04-80-E8 00-0A-E4-04-A7-F7
00-0A-E4-04-D2-FC 00-0A-E4-05-48-2B
00-0A-E4-05-B7-DF 00-0A-E4-06-05-FE
00-0A-E4-06-55-EC 00-0A-E4-07-19-3B
00-0A-E4-08-0A-02 00-0A-E4-08-7F-31
00-0A-E4-08-B2-89 00-0A-E4-09-75-D8
00-0A-E4-09-BB-9D 00-0A-E4-09-CF-24
00-0A-E4-09-FC-2B 00-0A-E4-0A-71-5A
00-0A-E4-0A-9D-DA 00-0A-E4-0B-61-29
00-0A-E4-0B-BB-FC 00-0A-E4-0B-BC-0F
00-0A-E4-0B-D9-BE 00-0A-E4-0C-9D-0D

Total Ranges: 21

If the MAC address of your i2002/i2004 phone does not match any of the MAC address ranges in the switch you'll need to add a range to include those MAC addresses. If the MAC address of your i2002 phone was 00:18:b0:11:22:33 you could use the following commands;

5520-48T-PWR> enable
5520-48T-PWR# config terminal
5520-48T-PWR (config)# adac mac-range-table low-end 00:18:b0:00:00:00 high-end 00:18:b0:ff:ff:ff

You might think you could configure a port mirror and run a quick packet capture to understand what's going on... unfortunately you cannot configure any port with port mirroring that has ADAC enabled.

Thats all for now.

The last step is the DHCP server so stay tuned.