technology, networking and IP telephony
Posts tagged LLDP
LLDP with Cisco 3750
Jan 16th
Nortel has released a Technical Configuration Guide designed to assist technical users configuring Nortel IP Phones connected to Cisco switches. The document makes specific references to the Cisco 3750 switch but the commands will apply to any Cisco switch that supports that specific feature.
I applaud Nortel for for making these Technical Configuration Guides available to users. It helps to broaden Nortel’s product reach and it empowers Nortel users to understand the different configuration options. I’d like to see Nortel get these documents indexed by Google or even there own internal Knowledgebase search engine.
In short you can use LLDP (802.1ab) on a Cisco 3750 to configure the Voice VLAN much the same way as you might on a Nortel ERS5520 switch using ADAC/LLDP. For those Cisco shops that are using Nortel Succession for voice this should be a welcome capability.
As in the past I’m going to post the document on my website;
http://www.michaelfmcnamara.com/files/ClientsInteropCisco_L2_1.1.pdf
As I’ve commented in the past it’s quite possible that Nortel may object to my “copying” of these documents. The goal is to make them readily available to Nortel users and allow them to be indexed by Google. I believe there are now quite a few Nortel corporate folks and engineers reading this blog, please contact me if you have concerns about me posting these documents.
Cheers!
ERS 5520 Switch v5.1 Software
Nov 20th
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 520-48T-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!
Nortel ERS 5520 PwR Switch (Part 2)
Oct 23rd
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.
Nortel ERS 5520 PwR Switch
Oct 23rd
I’ve added a command to disable the User Interface Button (UI Button) “no ui-button enable”.
Update: February 7, 2009
It was time to update this article with some additional information and settings that I’m now using in all my switch deployments. The big change is the updated ADAC MAC address table. Please also note the VLACP time-out scale change and I’ve updated the year field for the Daylight Saving Time change.
Update: August 13, 2008
This was one of the first articles I wrote back in October 2007 and it is by far the most popular article out of all 110 articles that I currently have published. With that said I decided to come back and spruce up this post with some additional “tweaks” that I’ve added over the past 10 months. I’m also going to attack a link to a text file so folks can just download the file of commands, tweak the specific individual settings such as IP address and VLAN information, and then cut and paste into the CLI interface of the Nortel Ethernet Routing Switch 5520. It will hopefully save folks from having to cut and paste each section.
Note: just a quick warning about cutting and pasting into the CLI interface, I’ve often found that the buffer will overflow if I try to paste an entire configuration at once. I usually need to break it into at least two or three sections and cut and paste those section one at a time.
In this post I’ll try to outline how you can configure the Nortel Ethernet Routing Switch 5520 in a VoIP environment using Nortel i2002/i2004 Internet Telephones (this procedure will also work the same with the i2007/1120E/
1140E phones).
You’ll obviously need a ERS 5520 switch and you’ll need SW 5.0.6.22 or later and FW 5.0.0.3 or later (there are known issues with earlier software versions that create inconsistent results using LLDP with the i2002/i2004 phones). I would strongly advise that you start with a default configuration. From the CLI issue the following commands to reset the switch to factory defaults;
5520-48T-PWR> enable 5520-48T-PWR# boot default
The switch should reboot with a default configuration. Let’s proceed with the configuration;
5520-48T-PWR> enable 5520-48T-PWR# configure terminal
Let’s set the local read-only and read-write passwords;
5520-48T-PWR (config)#cli password read-only readpass 5520-48T-PWR (config)#cli password read-write writepass 5520-48T-PWR (config)#cli password serial local 5520-48T-PWR (config)#cli password telnet local
Let’s disable the user interface button (UI button);
5520-48T-PWR (config)# no ui-button enable
Enable AUTOPVID;
5520-48T-PWR (config)# vlan configcontrol autopvid
We’ll be up linking this switch using a MultiLink trunk on ports 47 and 48 so we’ll enable tagging on the fiber uplinks;
5520-48T-PWR (config)# vlan ports 47,48 tagging enable
Let’s create the data VLAN (VID 100) and management VLAN (VID 200) on the switch;
5520-48T-PWR (config)# vlan members remove 1 ALL 5520-48T-PWR (config)# vlan create 200 name "10-1-200-0/24" type port 5520-48T-PWR (config)# vlan members add 200 47,48 5520-48T-PWR (config)# vlan create 100 name "10-1-100-0/24" type port 5520-48T-PWR (config)# vlan members add 100 1-48 5520-48T-PWR (config)# vlan port 1-46 pvid 100 5520-48T-PWR (config)# vlan port 47,48 pvid 200
Let’s make VLAN 200 the management VLAN and assign the IP address;
5520-48T-PWR (config)# vlan mgmt 200 5520-48T-PWR (config)# ip address switch 10.1.200.10 netmask 255.255.255.0 default-gateway 10.1.200.1
Let’s setup Simple Network Management Protocol (SNMP);
5520-48T-PWR (config)# snmp-server authentication-trap disable 5520-48T-PWR (config)# snmp-server community ro 5520-48T-PWR (config)# snmp-server community rw 5520-48T-PWR (config)# snmp-server host
Let’s configure the logging so it will overwrite the oldest events;
5520-48T-PWR (config)# logging volatile overwrite 5520-48T-PWR (config)# logging enable
Let’s setup Simple Network Time Protocol (SNTP);
5520-48T-PWR (config)# sntp server primary address 5520-48T-PWR (config)# sntp server secondary address 5520-48T-PWR (config)# sntp enable
Depending on the version of switch software your running you may be able to configure Daylight Saving Time;
5520-48T-PWR (config)#clock time-zone EST -5 5520-48T-PWR (config)#clock summer-time EDT date 9 Mar 2009 2:00 2 Nov 2009 2:00 +60
Let’s setup the MultiLink trunk that will connect the switch back to the backbone;
5520-48T-PWR (config)# mlt 1 disable 5520-48T-PWR (config)# mlt 1 name "MLT-8600" 5520-48T-PWR (config)# mlt 1 learning disable 5520-48T-PWR (config)# mlt 1 member 47,48 5520-48T-PWR (config)# mlt 1 enable
Let’s setup ADAC (Automatic Detection and Automatic Configuration) for our i2002/i2004 phones. We’ll using VLAN 50 as our voice VLAN and we’ll use port 48 as our uplink (the switch will add 47 automatically because of the MLT configuration). There is a new command to clear the ADAC MAC address table that may be missing from earlier versions, “no adac mac-range-table”. I’ve also updated the list of entries that I use.
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)# no adac mac-range-table 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 00:13:65:00:00:00 high-end 00:13:65:ff: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 00:16: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 00:18:b0:00:00:00 high-end 00:18:b0: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 mac-range-table low-end 00:1b:ba:00:00:00 high-end 00:1b:ba:ff:ff:ff 5520-48T-PWR (config)# adac mac-range-table low-end 00:1e:ca:00:00:00 high-end 00:1e:ca:ff:ff:ff 5520-48T-PWR (config)# adac mac-range-table low-end 00:22:67:00:00:00 high-end 00:22:67:ff:ff:ff 5520-48T-PWR (config)# adac enable
We need to strip the 802.1q tag from any packets in the PVID VLAN from going to the phone. In this design we’re expecting to connect IP phones to ports 1 – 46.
5520-48T-PWR (config)# vlan port 1-46 tagging untagpvidOnly
Let’s configure LLDP for the ports we expect to connect IP phones (1 – 46);
5520-48T-PWR (config)# interface fastEthernet 1-46
5520-48T-PWR (config-if)# vlan ports 1-46 filter-unregistered-frames disable
5520-48T-PWR (config-if)# lldp tx-tlv port-desc sys-cap sys-desc sys-name
5520-48T-PWR (config-if)# lldp status txAndRx config-notification
5520-48T-PWR (config-if)# lldp tx-tlv med extendedPSE med-capabilities network-policy
5520-48T-PWR (config-if)# poe poe-priority high
5520-48T-PWR (config-if)# spanning-tree learning fast
5520-48T-PWR (config-if)# adac enable
5520-48T-PWR (config-if)# exit
The option in RED above was added after an issue was discovered when trying to upgrade the firmware on the IP phones. The filter-unregistered-frames is enabled by default and should be disabled to avoid and issues with upgrading the firmware on the IP phones. We are attempting to investigate further with Nortel and our voice vendor Shared Technologies.
Let’s disable the two remaining ports that share the GBIC interfaces incase we need those in the future;
5520-48T-PWR (config)# interface fastEthernet 45-46 5520-48T-PWR (config-if)# shutdown 5520-48T-PWR (config-if)# exit
Let’s setup a QoS interface group to trust all traffic that will ingress on the fiber uplinks. By default the ERS 5520 switch will strip all QoS tags on all ports. Thankfully ADAC will take care of the QoS settings for all VoIP traffic.
5520-48T-PWR (config)# qos if-group name allUpLinks class trusted 5520-48T-PWR (config)# interface fastEthernet 47,48 5520-48T-PWR (config)# qos if-assign port 47,48 name allUpLinks 5520-48T-PWR (config)# exit
Let’s set the SNMP information;
5520-48T-PWR (config)# snmp-server name "sw-icr1-1east.sub.domain.org" 5520-48T-PWR (config)# snmp-server location "Acme Internet Phone Company (ICR1)" 5520-48T-PWR (config)# snmp-server contact "Network Infrastructure Team"
Let’s enable rate limiting for all broadcast and multicast traffic to 10% of the link;
5520-48T-PWR (config)# interface fastEthernet ALL 5520-48T-PWR (config-if)# rate-limit both 5 5520-48T-PWR (config-if)# exit
Let’s setup VLACP (Virtual Link Aggregation Protocol) on the uplinks to the core;
5520-48T-PWR (config)# interface fastEthernet 47,48 5520-48T-PWR (config-if)# vlacp port 47,48 timeout short 5520-48T-PWR (config-if)# vlacp port 47,48 timeout-scale 5 5520-48T-PWR (config-if)# vlacp port 47,48 enable 5520-48T-PWR (config-if)# exit 5520-48T-PWR (config)# vlacp enable
That’s it your done! Well hopefully your done.
In my next post I’ll tell you what DHCP options you’ll need to configure on your DHCP server in order for the phones to boot properly and connect to the Nortel Call Server.
Cheers!
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