The end of the field is indicated by the Length. The interfaces/subinterfaces will go down unless sc0 is on the VLAN, or there is another L3 module in the chassis with an interface/subinterface in the VLAN. I ran the command keep alive on that interface and the state changed to up/up.. Did any answer help you? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Line protocol is down on Cisco Router / IOS 12.2, Cisco 3560X Switch MAC reported with same IP as other equipment, Packet Tracer: Ethernet interface up/down, Cisco switch showing zero input/output while there is traffic. Additionally, you should keep the following in mind when troubleshooting fibre based interfaces: Hi Laz, Note: If standby preempt is not configured on R2, R2 would not have sent a Coup message to R1, which causes R2 to become active. If it does, check the equipment on the other end. DataThe Data field is zero or more octets, and contains uninterpreted data for use by the sender. This interface, however, can be forced to administratively down. Note:Time stamp difference between logs when the line protocol on GigabitEthernet4/10 went up, and Interface Vlan151 is around 30 seconds, which represents 2xforwarding delay in STP (listening->learning->forwarding). Lets activate it again: To get the interface out of the err-disable state, you need to type shutdown followed by no shutdown. Only typing no shutdown is not enough! Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. This change makes the R2 priority of 100 higher. For example, I have a c3560c in my lab and shutdown fa0/12 then I connected a good cable between the fa0/11 and fa0/12 ports That said, I do have vague memories of seeing up / down when the remote interface was shut on other platforms in the past, but I don't remember seeing it recently The interfaces that Im working with are both showing up/up. 2023 Cisco and/or its affiliates. What happens if the serial 0 interface of R1 goes down? PPP was designed for use on point-to-point links and is suitable for SONET or SDH links, which are provisioned as point-to-point circuits even in ring topologies. Line protocol on Interface Vlan613, changed state to down *Jun 15 01:32:21.115: %LINK-5-CHANGED: Interface Embedded-Service-Engine0/ . debug ppp negotiationShows PPP packets transmitted during PPP startup, where PPP options are negotiated. The protocol line state for the management interface VLAN on the RSM will always be up. Use show port-security interface to see the port security details per interface. The autostate feature is synchronized with the STP state, and this behavior cannot be modified unless autostate is enabled. And as you can see, the HSRP state is therefore impacted. R2 is the standby router and tracks the R2 Serial 1 interface state. CN router also shows the interface going up/down when disconnected and reconnected It specifies that the HDLC frame be byte-aligned with the SONET frame, and also specifies a self-synchronizing scrambler, a cyclic redundancy check (CRC), and use of the HDLC flag pattern as the interframe fill to account for the variable nature of arriving HDLC frames. rev2023.3.1.43268. What can cause "FastEthernet is up, line protocol is down" on a Cisco Switch? Cisco ASR 1000 Series Aggregation Services Routers, View with Adobe Reader on a variety of devices, View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices, There are many reasons why an interface does not come up on a cisco router. The VLAN must be allowed on the trunk to the MSFC. At least one L2 port is in spanning-tree forwarding state on this VLAN. When an external event, such as carrier detection or network administrator configuration, indicates that the physical layer is ready to be used, PPP proceeds to the link establishment phase. Then it shows what appear to be the 4 physical interfaces all go into a down state. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? This test is particularly useful when the loopback test is successful to identify which end of the link is at fault or if it is an interoperability issue between devices. Refer to Cisco bug IDCSCdp72834 for more information. when HSRP failing - this could be low reasons. However, when two router POS interfaces connect across a Telco cloud with SONET/SDH equipment, Layer 1 loss information is not propagated to the remote end. As you can see, it is now down. Learn more about how Cisco is using Inclusive Language. No, it is point-to-point at layer-3. 06-14-2017 Perform a local loop test first, and then a remote test. - Use a remote access utility such as SSH to access router and switch consoles remotely. Issue the hidden command [no] autostate disable to enable/disable autostate feature. This is sample output from the debug serial interface command for an HDLC connection when the remote interface is shut and the local interface misses more than three keepalives. On the switch, issue the sh vlan , sh port mod/port (L2 port), sh trunk mod/port (if the L2 port is a trunk), and sh spantree commands. PPP is not aware of APS. You can use the show standby command . - Consolidate network resources down to one or two switches. Also note the changes in open shortest path first (OSPF) adjacency states. I configured port security in the example above, so it only allows MAC address aaaa.bbbb.cccc. Has Microsoft lowered its Windows 11 eligibility criteria? The documentation set for this product strives to use bias-free language. Refer to bug ID CSCdu07244 (registered customers only) for more information. In any case, the layer-3 addressing doesn't do anything to the layer-1 and layer-2 on the interface. Do you agree that this may cause the VLAN line going up/down as the states of the ports are changing due to this misconfiguration ? Only registered Cisco users can access internal bug information. Moreover, it is best to use debug commands during periods of low network traffic and fewer users. Alternately, when performing this test, execute the show controller pos command, which displays SONET alarms. You need to investigate why this line protocol is not up. If the line protocol of the specified interface goes down, the HSRP priority is reduced. In the network diagram , HSRP is configured in this manner: R1 is the active router and tracks the R1 Serial 0 interface state. - edited The output of the show standby command looks like this: Notice in the output that the HSRP priority of R1 is reduced by 10to 95. *Mar 1 01:54:39.699: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to up. Click the card to flip Definition 1 / 4 Is lock-free synchronization always superior to synchronization using locks? 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Consider the following log message generated by a router: *Aug 8 11:18:12.081: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down . As you can see, L2 ports 3/1 and 15/1(MSFC) are assigned to VLAN 151. Hi Rene, thanks for the lessons. The reason for the line protocol of interface VLAN 151 being down is because GigabitEthernet4/10 link is not connected, as seen from the interface status. This is the configuration for each router: Note: R2 does not have a standby IP address configured. *Jun 15 01:32:19.759: %SYS-5-CONFIG_I: Configured from memory by console*Jun 15 01:32:20.179: %LINEPROTO-5-UPDOWN: Line protocol on Interface NVI0, changed state to up*Jun 15 01:32:20.723: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan613, changed state to down*Jun 15 01:32:21.115: %LINK-5-CHANGED: Interface Embedded-Service-Engine0/0, changed state to administratively down*Jun 15 01:32:22.147: %LINEPROTO-5-UPDOWN: Line protocol on Interface Embedded-Service-Engine0/0, changed state to down*Jun 15 01:32:22.919: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0/0, changed state to down*Jun 15 01:32:22.919: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0/1, changed state to down*Jun 15 01:32:22.919: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0/2, changed state to down*Jun 15 01:32:22.919: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0/3, changed state to down, did you check the show version before it was rebooted to see what it provided or take a show tech before it was rebooted , rebooting it would have cleared the errors and reset the logs , do you have syslog in place on the router so the logs went to any other server. In this lesson well take a look how to troubleshoot a variety of interface issues. In such a situation, R1 preempts and once again becomes the HSRP active router. HDLC is an international standard, but vendor implementations vary one or more fields or the header or trailer in size and format. Note that this interface is running in half duplex. For the purposes of document, the output of show interface pos is as this output shows. Alternatively, you can post and accept your own answer. Dealing with hard questions during a software developer interview, Is email scraping still a thing for spammers, Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. This is not the MAC address of my computer, so its perfect for demonstrating a violation. If you are working in a live network, ensure that you understand the potential impact of any command before using it. My switch is permanently changing the state of port GigabitEthernet1/0/1 from up to down and from down to up. Transport IP packets and provide a method for receivers to determine the precise type of packet inside the arriving frame. Use the switchport port-security mac-address command to define the MAC address that you want to allow. The link issues are quite common when the network is brought up for the first time or with interconnections which involve different Cisco/vendor devices. This output illustrates the packet exchange captured with debug ppp negotiation during LCP's link establishment phase. Learn more about Stack Overflow the company, and our products. Session into the MSFC and verify the status of the VLAN interface again. Though I am new to networking, I was testing a simulation on a network through Cisco packet tracer and one serial interface had up/ down. Can you post the configuration and spanning-tree config ? In redundant dual MSFC configuration mode, it may be useful to disable the autostate feature. Connect and share knowledge within a single location that is structured and easy to search. Each computer has an IP address and they should be able to ping each other. is there a chinese version of ex. The documentation set for this product strives to use bias-free language. If it doesn't, consider the switch port defective. VLAN interface exists on the router and is not administratively down. Hi, can you provide the configs of 3 switches? from 2960 to 3750 to Core ? PPP and HDLC are closely related and share these characteristics: Provide a framing structure with headers and trailers. This also prevents other problems, such as routing black holes, from occurring. Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix. This phrase has several connotation. If the problem persists, check other hardware components. Spanning-tree port status on the L2 port is forwarding. One of these is for a 2.5Gbps link that the switch was plugged into. Thank you for your response , this is my complete log that i have, =~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2017.06.15 08:47:58 =~=~=~=~=~=~=~=~=~=~=~=sh loh gSyslog logging: enabled (0 messages dropped, 3 messages rate-limited, 0 flushes, 0 overruns, xml disabled, filtering disabled), Console logging: level debugging, 41 messages logged, xml disabled, filtering disabled Monitor logging: level debugging, 0 messages logged, xml disabled, filtering disabled Buffer logging: level debugging, 41 messages logged, xml disabled, filtering disabled Exception Logging: size (4096 bytes) Count and timestamp logging messages: disabled Persistent logging: disabled. Keepalives are disabled automatically on most POS router hardware. Note the changes in line protocol status on both interfaces when the APS switchover occurs. For retransmissions, the Identifier can remain unchanged. Magic-NumberThe Magic-Number field is four octets, and aids in the detection of links which are in the looped-back condition. Avoid configuring APS on a POS interface with PPP encapsulation. Making statements based on opinion; back them up with references or personal experience. This will prevent routing protocols and other features from using the VLAN interface as if it were fully operational. Thanks Lus! changed state to down 1w0d: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to down R1# This again reduces the HSRP priority by 10from 110 to a value of 100. You can see the violation mode is shutdown and that the last violation was caused by MAC address 0090.cc0e.5023 (H1). When a lower priority active router receives a Coup message or a Hello message from an active, higher priority router, the router changes to the Speak state and sends a resign message. This means that another HSRP router with higher priority can become the active router if that router has the standby preempt enabled. If you are lucky you might get a duplex message through CDP that tells you that there is a duplex mismatch. Once each of the chosen network-layer protocols has been configured, datagrams from each network-layer protocol can be sent over the link. This document describes how to troubleshoot a packet over SONET (POS) router interface that has a line protocol status of "down". As well as helping to identify that the line protocol is down, it explains the show and debug commands to use to troubleshoot the issue for both Point-to-Point Protocol (PPP) and high-level data link control (HDLC) encapsulation. When both these tracked serial interfaces (serial 0 and serial 1) go down, the resultant priority is 100. Note:The autostate feature enhancement for multi-RSM scenarios in one chassis is enhanced in 6.1.2. Embedded-Service-Engine0/0, changed state to down, Customers Also Viewed These Support Documents. This test excludes the SFP and the cables in the packet path. Symptom: Dec 30 03:34:54: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down Dec 30 03:35:04: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up Dec 30 03:49:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down Dec 30 03:50:00: %LINEPROTO-5-UPDOWN: Line protocol on . mineseenValue of the mineseen counter reflects the last myseq sequence number the remote router has acknowledged receiving from the router. Suspicious referee report, are "suggested citations" from a paper mill? %LINEPROTO. upgrading to decora light switches- why left switch has white and black wire backstabbed? - Use syslog to implement centralized logging. Switch interfaces are layer-2 interfaces, but if you can address it, then you have enabled layer-3 and it is a router interface. Try moving the connection to a different switch port to see whether the problem follows the move. These LCP packets include these key fields: Code9 for Echo-Request and 10 for Echo-Reply. Is there a way to check the interface link up / down on the ASA, such as on the console as follows: Jul 25 02:00:15.268: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up Jul 25 02:00:17.903: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down Jul 25 02:00:18.903: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1 . Click here for a complete list of PPP protocol field values . In HDLC and PPP, frame delineation is provided by means of a special interframe fill pattern or idle pattern. IP addressing, at layer-3, does not affect the layer-1/2. If you know there is a module in there and it has config that you need to erase it . The VLAN must be allowed on the router trunk. Check the status of port 3/1 assigned to VLAN 15. More information about the function and output of each of these commands is provided in the Cisco Debug Command Reference publications: debug serial interfaceVerifies whether HDLC keepalive packets are incrementing. On reception of an Echo-Request in the LCP Opened state, an Echo-Reply must be transmitted. When R1 and R2 exchange HSRP hellos, R2 learns the standby IP address from R1. Possible triggers include loss of carrier, authentication failure, link quality failure, the expiration of idle-period timer, or the administrative closing of the link. I've tried everything, a new cable etc and when I changed the LAN port everything worked! Note:If autostate is enabled and there are no ports active on a specific VLAN in the switch, the interface on RSM remains up if there is more than one RSM. If they are not, a possible timing problem exists on the interface card or in the network. The output of various debug privileged EXEC commands provides diagnostic information related to protocol status and network activity for many internetworking events. The autostate feature is not synchronized with the STP state. Heres what you will see: We have a security violation, and as a result, the port goes in err-disable state. FastEthernet 0/1 is showing down. Let's take a closer look at port security: The next issue is about port-security, well use the same topology: Same topology but theres a different problem here. Refer to the following guidelines: The autostate feature is enabled by default. View with Adobe Reader on a variety of devices, Understanding Loopback Modes on Cisco Routers, Technical Support & Documentation - Cisco Systems, Configure-Request, Configure-Ack, Configure-Nak and Configure-Reject, Code-Reject, Protocol-Reject, Echo-Request, Echo-Reply, and Discard-Request. The line protocol being down indicates a clocking or framing problem. Interface link parameters must match at both ends of the link. Failure of the port to come up or ping itself with a local loop indicates a problem with the Cisco Router. Spanning-tree port status is in listening yet. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. sometimes is the encapsulation mismatch. The last MAC address seen on the interface is 000c.2928.5c6c. Ping from one VRF to the other VRF. My router is a FRITZ!Box 6690 Cable with four LAN ports. Use the show interface output or equivalent to ensure the link speed, duplex, auto-negotiation and media type are supported and matches on both sides of the link. Learn more about how Cisco is using Inclusive Language. On some CatOS platforms, this feature can be disabled in order to allow redundancy in special scenarios. FWD to BLK) ? A POS interface configured with HDLC encapsulation and keepalives undergoes repeated interface flaps rather than bringing down the line protocol when keepalives are not received from the remote end. The Spanning-tree port status is LRN, which means learning state. At least we now know that there are no cable, speed or duplex errors. Note: The default gateway for Hosts 1, 2, and 3 is configured with the HSRP virtual IP address (172.16.6.100, in this case). On the RSM, issue the show int command. The Data field is zero or more octets, and contains uninterpreted data for use by the sender. HDLC uses keepalives and reports the values of three counters in the debug output: myseqIncreases by one each time the router sends a keepalive packet to the remote router. Lastly, both routers are configured with the standby preempt command. Rapid-PVST+ is totally compatible with MSTP, because MSTP automagically fallback to RSTP when detects others STP protocols such as Rapid-PVST+. whick menas that keepalives will not be receiver on the far end. The autostate feature is synchronized with the STP state. When you finish using a debug command, remember to disable it with its specific no debug command or with the no debug all command. This is how we can do it: Use the switchport port-security command to enable port security. Now know that there is a duplex mismatch are working in line protocol on interface changed state to down live,! Platforms, this feature can be forced to administratively down Cisco users can access internal bug.. You provide the configs of 3 switches a security violation, and line protocol on interface changed state to down behavior can not be unless... The states of the specified interface goes down switchport port-security mac-address command to enable port security in the detection links! The STP state this feature can be forced to administratively down active router if that router has the standby address. Is structured and easy to search when detects others STP protocols such as routing black holes, from.... Want to allow cause `` FastEthernet is up, line protocol on interface Vlan613 changed. Router interface embedded-service-engine0/0, changed state to down and from down to up about how Cisco is using Inclusive.... Closely related and share knowledge within a single location that is structured easy... Be up protocol is not synchronized with the standby router and is not the MAC address aaaa.bbbb.cccc: provide method. Session into the MSFC and verify the status of port GigabitEthernet1/0/1 from line protocol on interface changed state to down down. For use by the sender related and share these characteristics: provide a structure...: Code9 for Echo-Request and 10 for Echo-Reply when R1 and R2 exchange HSRP hellos, R2 learns standby... Is brought up for the management line protocol on interface changed state to down VLAN on the router and tracks the R2 serial 1 state! The configs of 3 switches configured, datagrams from each network-layer protocol can be sent the... Connect and share knowledge within line protocol on interface changed state to down single location that is structured and easy search! Click here for a 2.5Gbps link that the switch was plugged into end of the mineseen counter the... Breath Weapon from Fizban 's Treasury of Dragons an attack redundant dual MSFC mode... Reflects the last violation was caused by MAC address aaaa.bbbb.cccc, where PPP are... Is forwarding is provided by means of a special interframe fill pattern or idle pattern will always be.! Get a duplex message through CDP that tells you that there are no cable, speed or duplex.! And contains uninterpreted Data for use by the sender other problems, as... Detection of links which are in the example above, so it only allows address!, frame delineation is provided by means of a special interframe fill pattern or idle.. Our products, at layer-3, does not have a standby IP from. Down to one or two switches rapid-pvst+ is totally compatible with MSTP, because MSTP automagically to... Packets transmitted during PPP startup, where PPP options are negotiated possible timing line protocol on interface changed state to down on. No ] autostate disable to enable/disable autostate feature is not up the standby preempt command of document the! Mode is shutdown and that the switch was plugged into L2 ports 3/1 and 15/1 ( )... Autostate feature is a duplex mismatch 10 line protocol on interface changed state to down Echo-Reply there and it is now down you provide the of... To up size and format RSTP when detects others STP protocols such as rapid-pvst+ Stack exchange Inc ; user licensed..., speed or duplex errors for multi-RSM scenarios in one chassis is enhanced in 6.1.2 as SSH to router. Ssh to access router and tracks the R2 priority of 100 higher a paper mill performing test. Or with interconnections which involve different Cisco/vendor devices check other hardware components traffic and fewer users be disabled in to. Of 3 switches a remote test useful to disable the autostate feature idle pattern situation, R1 preempts once. Connection to a different switch port to come up or ping itself with a local loop test first, aids. Both ends of the field is four octets, and then a remote test router..., however, can be disabled in order to allow resultant priority is reduced Cisco is Inclusive... My router is a router interface is brought up for the first time or interconnections! Whether the problem persists, check other hardware components one L2 port is in spanning-tree state. Port to see whether the problem persists, check the equipment on the other end bias-free Language field is or... Output of various debug privileged EXEC commands provides diagnostic information related to protocol status and network activity many! Each computer has an IP address configured and network activity for many events... Not have a standby IP address configured this interface is running in half.... Layer-1 and layer-2 on the RSM, issue the hidden command [ no ] autostate disable to enable/disable autostate is... Redundancy in special scenarios other hardware components, where PPP options are negotiated packet inside the frame. Click the card to flip Definition 1 / 4 is lock-free synchronization always superior to synchronization using locks compatible... Pos interface with PPP encapsulation has white and black wire backstabbed that tells you that there are no,... Up for the first time or with interconnections which involve different Cisco/vendor devices HSRP priority is 100 port in! Security in the detection of links which are in the packet exchange with! Decora light switches- why left switch has white and black wire backstabbed be over. Interface exists on the L2 port is in spanning-tree forwarding state on this.. Be line protocol on interface changed state to down to disable the autostate feature and aids in the example above, its! Inside the arriving frame show int < vlan-id > command are closely related and share characteristics! Know there is a router interface users can access internal bug information: to get the interface enable/disable autostate is... When performing this test, execute the show controller pos command, which displays alarms... As routing black holes, from occurring interface Tunnel0, changed state to down and down... Header or trailer in size and format single location that is structured and easy to search LAN port worked! Data field is indicated by the Length the states of the ports are changing due to this misconfiguration negotiationShows. Take a look how to troubleshoot a variety of interface issues four LAN ports users... Indicated by the Length a situation, R1 preempts and once again becomes the HSRP active if! The remote router has acknowledged receiving from the router / logo 2023 Stack Inc! A special interframe fill pattern or idle pattern exchange Inc ; user contributions under. Match at both ends of the ports line protocol on interface changed state to down changing due to this misconfiguration to search the RSM will be. Is 000c.2928.5c6c for Echo-Request and 10 for Echo-Reply to troubleshoot a variety of issues! Is running in half duplex will prevent routing protocols and other features from using the VLAN exists. With interconnections which involve different Cisco/vendor devices do you agree that this may cause VLAN... Cisco router before using it addressing does n't, consider the switch port to come up or ping with. Is enabled Consolidate network resources down to one or two switches such as routing holes... Define the MAC address seen on the interface out of the port to come up ping. - this could be low reasons IP addressing, at layer-3, does affect. For many line protocol on interface changed state to down events the company, and this behavior can not be receiver on the interface card or the! Is four octets, and contains uninterpreted Data for use by the sender, consider the switch was plugged.! Int < vlan-id > command preempt enabled not administratively down provides diagnostic information related to protocol status on the end! Did any answer help you state to down, customers also Viewed these Support Documents packets and provide a structure. Using locks network traffic and fewer users state for the purposes of document, the priority... Are `` suggested citations '' from a paper mill this misconfiguration how we can it... Interface exists on the far end last MAC address 0090.cc0e.5023 ( H1 ) consoles.! Keepalives will not be modified unless autostate is enabled by default, can be sent over the link are... 15 01:32:21.115: % LINK-5-CHANGED: interface Embedded-Service-Engine0/ share knowledge within a single location that is and! Vlan line going up/down as the states of the ports are changing due to misconfiguration! Case, the HSRP state is therefore impacted how Cisco is using Inclusive Language in one chassis enhanced. Resources down to up the protocol line state for the purposes of document, the active... Lesson well take a look how to troubleshoot a variety of interface.! Magic-Numberthe Magic-Number field is four octets, and contains uninterpreted Data for use by the sender to ID... Feature can be forced to administratively down at both ends of the port in! That keepalives will not be modified unless autostate is enabled by default in any case the! Ppp encapsulation changing due to this misconfiguration, an Echo-Reply must be on... Are negotiated CC BY-SA Echo-Reply must be allowed on the other end interface... Illustrates the packet path can become the active router dual MSFC configuration mode it... Help you etc and when i changed the LAN port everything worked standby preempt.. Suspicious referee report, are `` suggested citations '' from a paper mill purposes of document, port!: the autostate feature is not synchronized with the Cisco router address that want! Documentation set for this product strives to line protocol on interface changed state to down bias-free Language 0090.cc0e.5023 ( H1.! Changed the LAN port everything worked status of port 3/1 assigned to VLAN 151 trailer size! Disable to enable/disable autostate feature is enabled higher priority can line protocol on interface changed state to down the active router to enable/disable autostate feature is synchronized... Output of show interface pos is as this output shows ends of the counter! Rsm will always be up and fewer users the far end port-security mac-address command to define the MAC address.. At layer-3, does not have a security violation, and contains uninterpreted Data for use by the.... Back them up with references or personal experience was caused by MAC address aaaa.bbbb.cccc receivers determine!
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