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I found an old Cisco 1841 router and decided to boot it up to play with it a little. Everything seemed to be going ok but I guess something interrupted the boot. Last line is
%SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 10.60.60.11 started - reconnectio
After this it just starts sending random characters over serial. What can I do to solve this?
Here's the entire log from the console:

System Bootstrap, Version 12.3(8r)T9, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 2004 by cisco Systems, Inc.
PLD version 0x10
GIO ASIC version 0x127
c1841 processor with 262144 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled


Readonly ROMMON initialized
program load complete, entry point: 0x8000f000, size: 0xc100

Initializing ATA monitor library.......
program load complete, entry point: 0x8000f000, size: 0xc100

Initializing ATA monitor library.......

˙÷˙˙program load complete, entry point: 0x8000f000, size: 0x10f80d4
Self decompressing the image : #############################################################################################################˙#####################################˙############################ [OK]

Smart Init is enabled
smart init is sizing iomem
  ID            MEMORY_REQ         TYPE
                0X003AA110 public buffer pools
                0X00211000 public particle pools
                0X00020000 Crypto module pools
                0X000021B8 Onboard USB

If any of the above Memory Requirements are
"UNKNOWN", you may be using an unsupported
configuration or there is a software problem and
system operation may be compromised.

Allocating additional 19653665 bytes to IO Memory.
PMem allocated: 240123904 bytes; IOMem allocated: 28311552 bytes
˙
              Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.
           170 West Tasman Drive
           San Jose, California 95134-1706



Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.4(3g), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 06-Nov-06 01:09 by alnguyen
Image text-base: 0x600886DC, data-base: 0x61A80000

żPort Statistics for unclassified packets is not turned on.

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

Cisco 1841 (revision 6.0) with 234496K/27648K bytes of memory.
Processor board ID FCZ104720KR
2 FastEthernet interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity disabled.
191K bytes of NVRAM.
62720K bytes of ATA CompactFlash (Read/Write)


If the interface doesn't support baby giant frames
maximum mtu of the interface has to be reduced by 4
bytes on both sides of the connection to properly
transmit or receive large packets. Please refer to
documentation on configuring IEEE 802.1Q vLANs.



Press RETURN to get started!

sslinit fn

*Jul 16 09:57:56.559: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Initialized
*Jul 16 09:57:56.563: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0  State changed to: Enabled
*Jul 16 2019 10:57:59.267: %SYS-6-CLOCKUPDATE: System clock has been updated from 09:57:59 UTC Tue Jul 16 2019 to 10:57:59 CET Tue Jul 16 2019, configured from console by console.
*Jul 16 2019 11:57:59.271: %SYS-6-CLOCKUPDATE: System clock has been updated from 10:57:59 CET Tue Jul 16 2019 to 11:57:59 CET-SUM Tue Jul 16 2019, configured from console by console.
*Jul 16 2019 11:58:00.731: %SYS-5-CONFIG_I: Configured from memory by console
*Jul 16 2019 11:58:00.919: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up
*Jul 16 2019 11:58:00.919: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
*Jul 16 2019 11:58:01.423: %SYS-5-RESTART: System restarted --
Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 12.4(3g), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 06-Nov-06 01:09 by alnguyen
*Jul 16 2019 11:58:01.427: %SNMP-5-COLDSTART: SNMP agent on host hzzo_ri01-c1841 is undergoing a cold start
*Jul 16 2019 11:58:01.443: %SSH-5-ENABLED: SSH 1.99 has been enabled
*Jul 16 2019 11:58:01.739: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Jul 16 2019 11:58:01.939: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
*Jul 16 2019 11:58:01.939: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
*Jul 16 2019 11:58:02.871: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 10.60.60.11 started - CLI initiated
*Jul 16 2019 11:58:03.991: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
*Jul 16 2019 11:58:04.047: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to down
*Jul 16 2019 11:58:09.991: %SYS-6-LOGGINGHOST_STARTSTOP: Logging to host 10.60.60.11 started - reconnectio˙˙űý˙˙˙˙˙÷˙ű˙˙˙˙˙˙˙˙˙˙ű˙ű˙˙˙˙˙űű˙˙˙˙ďď˙˙˙
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We are experiencing occasional performance problems in our WIFI. With Wireshark I see a high number (currently 50/s) of MDNS responses for localhost_prl:127.0.0.1.

I don't think that this is normal. A MDNS response with 127.0.0.1 seem pointless to me. Additionally, the responses sometimes include the same answer multiple times (see screenshot).

I'm not aware of any loops in our network. I couldn't find the reason for those packages too. I only see the responses, but no requests for localhost_prl.

I appreciate any input. The traffic is constantly high volume.

Thanks, and best!

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I am connected to internet through ADSL. It happens frequently that i see very sharp latency in internet speed and even sometimes i am not able to browse. When calling the ISP they confirm they do not see any issues with the line.

My question is how can i check and give a proof on the root cause of the issue? What commands / tools i can use that allow me to check the QoS of the line and even determine the potential point of failure on the communication line?

Note:

  1. The latency is in all connected devices not from a certain one.
  2. not sure if this is the right group to ask this question. If not, please help me to post this question to the right place.
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I have configured separate vlan for voip and connected interface to it (as shown below). But the phone is not getting ip address automatically. switch- cisco 2960-x phone- yealink

I had tried: (on phone) 1) changing cables 2) factory reset 3) static ip address setup

On switch, I had provided IP and no shut. It is getting IP of access vlan 10 instead of vlan 30.

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Currently, I join into a house-group, that contained many users. I am provided a network cable that I can't know/change any settings. The diagram is as the attachment. The questions is : May I restrict connection from UserA, UserB, ... to my network? If possible, how can I do it? (how to config, or even change/add my network devices).
Thank for any suggestions, keywords are welcome!

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I did some search about this question but couldn't clarify.

according to this post, I guess the NFVi can be used to run the virtual machine of switch, router, firewall, load-balancer and more for the general office environment? Is it the widely used scenario of NFVi?

I'm thinking about start a lab on vSphere for my company to research on how to implement the NFVi to the basic office environment.

Does the NFVi work in this way?

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We are currently having issues with our WebService being intermittently inaccessible to clients. During diagnosis with the NOC and with some internal testing we believe we have a router dropping packets.

Our system has 4 Windows Server 2003 machines connected via a switch on one port (internal communication) and a router (Cisco RV082) on the second port (web traffic).

From our WebServer, if we WinMTR to the Router, managed switch or over the internal network (5.x) we get a 0% packet loss.

However, when we run the same WinMTR tool to our gateway, we receive a 0% packet loss on the gateway, but as of last test a 9% packet loss on the router.

|------------------------------------------------------------------------------------------

|                                      WinMTR statistics   

|                       Host              -   %  | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------

|
|                             192.168.1.1 -    9 | 1986 | 1818 |    0 |    0 |    1 |    0

|      static-xxx-xx-x-xxx.xxx.xxxxxx.xxx -    0 | 3667 | 3667 |    0 |    0 |   76 |    0 

|________________________________________________|______|______|______|______|______|______

   WinMTR v0.92 GPL V2 by Appnor MSP 

I'm not entirely sure how to process this information. Does this imply that there is a break between the router and the gateway as the router seems fine on it's own? Or is it a problem with the router not responding properly when we go to the WAN port.

Edit

The existing problem server goes from

Server -> Router -> dumb switch -> gateway

We have another server in the same cabinet that goes

Server -> different router -> dumb switch -> gateway

Thank you in advance.

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I have 4 guests in my VMware host, all of them work as expected; but if I use tracert to find out the route they take to reach the external site, all of them will reach the max 30 hops after the first hop is the gateway:

[root@cdsw ~]# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=128 time=9.51 ms

[root@cdsw ~]# /usr/bin/traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
 1  gateway (192.168.122.2)  0.118 ms  0.080 ms  0.062 ms
 2  * * *
 3  * * *
 4  * * *
 5  * * *
 6  * * *
 7  * * *
 8  * * *
 9  * * *
10  * * *
11  * * *
12  * * *
13  * * *
14  * * *
15  * * *
16  * * *
17  * * *
18  * * *
19  * * *
20  * * *
21  * * *
22  * * *
23  * * *
24  * * *
25  * * *
26  * * *
27  * * *
28  * * *
29  * * *
30  * * *

Can anyone enlighten me why and how can I get the full route?

Thank you very much.

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So, the question is this. I have a Cisco router with multiple VLANS assigned to a single Gigabit port. 100,200,300, etc. as well as the normal connection without any vlan tagging.

Now, everything goes over that one ethernet cable.

My question is this,

Assuming that you have 4 identical streams of the same protocol and same port happening at the same time, how is information send over the cable?

When the VLANS communicate with the router, do they just timestamp the regular network, then move on to vlan 100 and timestamp is, etc in serial?

I guess what I'm saying is if this is a hypothetical latency sensitive application, and these networks are utilizing the same resource, but need to stay on separate VLANS, what takes priority?

Whose packets are sent first? If all the VLANS needs to access this at the exact same time how is that done?

I hope this makes sense, thank you.

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Just making sure that I understand correctly, When a new node on the network joins the LAN, it sends the DHCP server its hostname, and after the DHCP server acknowledges the requested hostname, the DNS server stores in so that it can be queried later on from other nodes in the LAN?

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