Cisco :: ASA Received Large Packet?

Jan 13, 2011

I've got a lot of these messages in my logs from SVC users:Code:

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Cisco :: Packet Didn't Received By Host

May 12, 2011

Problem Host A unable to reach Host B, trace route from Host A it reach to Router B but the packet unable reach to the Host B here the 1st level troubleshoot I did

1. Traceroute and ping success from router A to host B

2. Ping success from router B to host B success

I wonder the packet reach to router B but it didnt pass to Host B.

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Cisco :: (Received Encrypted Packet With No Matching SA / Dropping)

Jun 24, 2011

Got to set up a site to site VPN to one in a clients office and we're struggling to get Phase 2 working, just seems to loop around saying "Received encrypted packet with no matching SA, dropping" which to me means the ACLs arent mirrored correctly?

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Cisco WAN :: TAC 900 - Crash Because Of Large Packet

Dec 8, 2010

We are working on taking a port off of a switch and connecting it to a mux (TAC 900). Port is trunked to another switch in another geographic location. From wht I am being told from the engineer who handles the transmission end of things he said once our segment is physically connected the mux will crash. He supplied the error code to the vendor and they said it is crashing because of a jumbo packet in excess of 1536 bytes. Soon it will be a moot point as the hardware will be, upgraded but we need tis running NOW.

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Why Does DSL CKT Gets Bounced With Delivery Of Large Packet

May 20, 2011

Why does DSL CKT gets bounced with delivery of large packet?

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Cisco Switching/Routing :: 2600 - Source IP Set To Public When Packet Received

Mar 27, 2012

We have Cisco IP phones behind a 2600 series router:Most of the time when the PBX receives a packet from the phone, the source IP of the packet is set to the public IP of the router ( as expected. However, once in a while, we get packets (at the PBX) with the source IP set to the private IP of the phone ( router is configured by our provider, and they can't give us any explanation for this behaviour. Is it safe to assume that PAT is not configured properly at the router?

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Cisco :: ASA5540 - Run Firewall To Display MTU Packet Size Being Received On Interface?

Jul 5, 2012

I have a ASA5540 firewall set-up with an interface MTU of 1500.  
I suspect that we are receiving packets with a larger MTU but have not found an easy way of confirming this.  Any command that can be run on the firewall to display the MTU packet size being received on an interface?
We are also running Solar Winds so could query an OID if such a variable exists.

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Cisco Switching/Routing :: 4500 / Packet Received With Invalid Source MAC Address

Sep 3, 2012

Most of the 4500 Switches in our network are giving the similar error for so many ports
%C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 1 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on p  t Gi2/6 in vlan 100
Its impossible to do a wireshark packet tracing for all the ports. 

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Cisco Switching/Routing :: 4507 - Packet Received With Invalid Source MAC Address

Feb 14, 2012

Issue I am having with a Cisco 4507? Below is the error i am receiving.
Feb 14 10:06:09 EST: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 508 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po10 in vlan 112
Feb 14 18:44:06 EST: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 119 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po10 in vlan 112
Feb 15 00:51:06 EST: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 366 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Po10 in vlan 112


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Cisco WAN :: 7609 / Invalid Packet (too Large) Length 34176

Aug 19, 2012

There are many log messages on our three 7609 routers .
Aug 16 06:17:22.664 beijing: Invalid packet (too large) length=34176
Aug 16 06:29:13.102 beijing: Invalid packet (too large) length=34176
Aug 16 06:45:23.403 beijing: Invalid packet (too large) length=34176
Aug 16 16:46:17.245 beijing: Invalid packet (too large) length=34176
Aug 16 16:46:26.257 beijing: Invalid packet (too large) length=34176
Aug 16 17:15:30.621 beijing: Invalid packet (too large) length=34176
Aug 16 17:54:51.775 beijing: Invalid packet (too large) length=34176


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Cisco Switching/Routing :: 6509 Monitoring Session Experiencing A Large Packet Loss

Aug 16, 2012

I have been searching the message boards and wasn't having much luck. I am running some monitoring sessions on my 6509 and on the VLAN I am monitoring, I am experiencing a really large packet loss.  If we hook up a laptop to the destination port and run wireshark we are seeing between 80% and 90% packet loss.  I dont see the packet loss on the show port command, but I do on the show int vlan command.
The config is as follows:
Session 2
Type                   : Local Session
Source VLANs           :
RX Only            : 500


I was doing some reading on Egress vs Ingress and I am wondering if the Egress SPAN replication state could be causing the packet loss that we are seeing or does the ingress & learn command override that?

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No Sent And Received Packets?

Feb 3, 2011

My sent packets are 0 and also received packets. What can I do?

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No Packets Being Received On Pc

Jul 20, 2011

I use a wireless adapter to connect to our home network but its stopped receiving packets but is sending them. It has worked fine for ages now it just randomly stopped. The network works with everything else (laptops, Xbox and iPods) but my pc wont receive anything. Also our home connection has no password as we live in the middle of nowhere.

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Packets Sent But Not Received?

Oct 29, 2011

I am having a really hard time with a computer that has a wireless connection. Specifically the internet keeps going out. The computer info is that of the affected computer and not the host computer to which the router and modem are connected.

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Sent Packets Are More Than Received

Sep 9, 2012

How come my packets sent are so high.

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Block Isp From Seeing Data Received And Sent?

Mar 27, 2012

How can I prevent them from seeing the data i receive & send i was told vpn was a route to take but after some searching i found a lot of threads saying different is vpn a best way to go about blocking my isp from seeing data received & sent

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Cisco :: Ssh2.0 - Unexpected Message Received?

Oct 22, 2012

I was wondering what could cause this, because every time this message shows up in the log I lose internet connection for about 1 minute then it comes back up. Let me know if I need to get any config info.

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Cisco WAN :: 2911 / NetFlow Traffic Not Received

Jan 13, 2012

Recently bring up a new Router connected to  ISP A and the Netflow collector/server is located in different location and they are connected to ISP B. I have enabled snmp and netflow config on my router(2911) but not receiving the netflow packets are not reaching the server for due to some strange reason whereas other packets like ICMP for snmp are reaching the netflow collector.Finally,I created GRE tunnel between the two locations routers and set the route  for the netflow collector/server to the tunnel other end IP. In this way the netflow traffic are reaching successfully to the server.

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Sent And Received Bytes Increasing When Idle?

Jan 20, 2011

When i check the status of my Internet Connection I notice that the sent and received bytes keeps increasing. I'm sure there are no downloads taking place that I'm aware of. No torrent clients, no antivirus nothing. I checked my PC for malware but that didn't work. As a result of this, i keep getting high pings in online games and can't even watch videos in youtube anymore. like, some software to monitor all the programs that use the itnernet connection without my knowledge or something??My primary concern is gaming (Call of Duty 4) so I wouldn't mind this idle downloading (whatever it is) as long as the major chunk of my internet connection is directed towards Cod4!

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Sent And Received Bytes Keeps On Increasing Even When Idle?

Jan 20, 2011

This has been happening of late. When i check the status of my connection, i notice that the "sent" and "received" bytes keeps on increasing when i'm idle. I'm pretty much sure there's no downloading of any sort in progress that I'm aware of. As a result of this, I can't watch videos in Youtube or play online games due to high ping. 

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Cisco :: Show The Clock Rate Received On The DTE Side?

Jan 1, 2013

what command will show the clock rate as received on the DTE side of a back-to-back configuration?the show controllers command shows the configured clock rate on the DCE side.But how about viewing the received clock rate on the DTE side?

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Cisco WAN :: 7206vxr Router - How To Check Received Power On OC3 SFP

Mar 8, 2011

we have a 7206vxr router with pa-pos-2oc3 and SFP-OC3-IR1-C. Our provider wants us to check transmitted and received power on the SFP.
I already looked around and know theres no way to check or adjust transmit power and saw its -15 to -8dbm on the datasheet.
Is there a way to check received power?
IOS version
7200 Software (C7200P-ADVENTERPRISEK9-M), Version 12.4(24)T3

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How Does The Router Find The Type Of Message It Has Received

Nov 5, 2011

I know that the routers communicates using routing protocols and that they forward the ip packets. So I looked in the IP header and the RIP header(for example) and I don`t understands when an packet comes in how does the router understands it`s type? (There`s no byte field to tell him explicitly that this is an ip packet or a rip message)

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0 Packets Sent And Received / Can No Longer Connect To Internet

Feb 15, 2012

i can no longer connect to the internet and i have tried everything i could think of. my "wireless network connection status says 0 packets sent and 0 recieved,but im connected to my router with excellent signal. when i got this laptop it had alot of malware, i removed 283entries with malwarebytes in safemode. after i did that i couldnt connect to the internet.

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Protocols / Routing :: No Packets Received After Reformat?

Sep 13, 2012

I have an Acer Aspire one that connected perfectly to the internet until I did a reformat. Now it only works if through a wired connection or if the internet does not have a password protection. I have tried on 2 different locations with secure wireless and both have the same result. Packets are sent but not received. All other devices in either location are able to connect to internet through wired or wireless connections.IP address is at and DHCP is enabled, TCP/IP is set to obtain automatically and I deleted and downloaded the newest drivers from the Acer website twice. I also did a winsock reset and tried to clear the arp cache? One of the issues I am getting when I run the diagnostic is "warn default gateway address could not be resolved via arp". I'm not sure how to resolve that.

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PC Reinstall With XP - Wired Connection No Packets Received

Dec 21, 2012

I reformat my old PC and installed Win XP SP3. There were no errors during installation and everything works ok. However, I'm not able to connect to the internet with my ethernet cable. The LAN connection shows 'Connected' but properties shows some packets sent but zero received. There are no antivirus program installed, windows firewall is turned off as well.

I've tried the following:

- Tried the same ethernet cable connection to another PC and I was able to get on the internet (so no ISP or router issues I assumed).

- Fix the stack using Winsock - didn't work.

- Device Manager now shows Network Adapter > Atheros L2 Fast Ethernet 10/100 Base-T Controller #2 (no yellow question mark). Although I had to reinstall the driver after XP installation.

- Here's the result of ipconfig/all:

Windows IP Configuration
Host Name . . . . . . . . . . . . : fiu-cf8cd9c6ded
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown


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Can't Connect To Workgroup Network 0 Bytes Received?

Jan 31, 2012

We have a new router (D Link) at offices which is fixed with LAN wall points on different places , we want to use it .I connected computers to the LAN points with regular lan cables , it gives me the alert (connected) but no bytes received .I tried to ipconfig an here's what i got :Windows IP ConfigurationEthernet adapter Local Area Connection 2[CODE]

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HP Workstation / Broadcom NetXtreme No Packets Sent Or Received

Oct 5, 2011

I have an HP Workstation that I have been working at constantly to get up and running on the network, it had "OpenCloudSecurity" adaware on it I believe and I was able to get that off with a couple of my freeware tools. The problem I am having is simply it will not connect to the network and only shows. 0Sent 0 Recieved and doesn't pull and IP configuration. I skimmed around and found that sometimes adaware/spyware can play with the TCPIP Stack and that your best bet is to reset the TCPIP stack and WINSOCK ; I did TCPIP Reset and Winsock multiple times with multiple reboots . I know it isn't the ethernet card because I popped in a live Ubuntu CD and it connected just fine on the wired ethernet.

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D-Link DIR-655 :: What It Means UDHCPD Received A SIGTERM

Oct 23, 2012

Today i saw on the router dir-655 log file that "UDHCPD Received a SIGTERM" and "received signal 15, good-bye" and the ip address was renewd after 14 days. I want to understand if it's normal behavior of the unit or not. I'm connected to cable modem that is stable more than 15 days.

here is the log of my router:

Oct 23 17:49:48     debug     UDHCPD sending ACK to
Oct 23 04:01:15     debug     Debu: Joining group upstream on IF address
Oct 23 04:01:15     debug     Debu: Leaving group upstream on IF address
Oct 23 03:59:09     debug     Debu: Joining group upstream on IF address
Oct 23 03:43:58     debug     gpio create pidfile /var/run/


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Cisco Routers :: RVS4000 - Just Received Log Entry / Kris Is Unlocked

Apr 29, 2013

I have a RVS4000 and just received a log entry "Kris is unlocked". 

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Cisco Wireless :: WLC 5508 Request Received On Wrong Vlan

May 31, 2012

We have two WLC's 5508. Following are its interfaces & details:mgmt on wlc1 & .252 on wlc2 access p on wlc1 & .252 on wlc2 there is no AP manager interface seen on both wlc's nor configured. both wlc1 & wlc2 are connected each to two switch ports, configured as normal trunk link each.LAG is enabled on both WLC's.

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Cisco Firewall :: ASA 5510 - Connect From Outside To Conference On MCU / No Video Received

Dec 27, 2011

There are two Polycom devices behind ASA (Terminal HDX7000 and MCU RMX1000), ASA is connected to Cisco 1900 router which is connected to ISP.

Polycom devices are NATed (unique global address per device) on router and h323 inspection is done on ASA. The issue is that when trying to connect from outside to conference on MCU I don't receive any video (but MCU shows me like a connected participant). The same is true when MCU try to call outside terminals, they are shown as connected participants, but there is just a black screen. On ASA all ports are opened (both in and out) and there are no ACLs on router. And what means NAT configuration on Polycom devices, why it is needed when NATing is done on router (such configuration option I've seen also on Tandberg and another vendor's devices)?

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Cisco WAN :: Unexpected BPDU Received Port Has Been Disabled 3750

Dec 7, 2010

One of our Cisco 3750G switches keeps showing this warning:

Description: Gi4/0/43: Unexpected BPDU received. Port has been Disabled.

Recommendation: Check Configuration of the switch, also make sure devices connected to the switch. Enable this port again.

However, there is no thing connecting to the port Gi4/0/43 as shown this link: [URL]. Why do you get this warning?

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