Re: excessive collisions
Hope this hepls, Error Message %DEC21140-5-COLL: [chars] excessive collisions Explanation A Fast Ethernet packet was dropped because too many attempts to transmit it were stopped by collisions. This can be caused by a Fast Ethernet segment that is full to capacity or by other equipment on the LAN malfunctioning. Recommended Action No action is required. Sincerely, Raul -Original Message- From: Rayappa Mayakunthala [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Saturday, November 18, 2000 1:19 PM Subject: excessive collisions Folks These messages appear on my router (Cisco 4700M) at a point of time everyday. This is very strange because it happens between 2pm and 3pm everyday. We tried replacing the patch cable, changing interface, etc. %DEC21140-5-COLL: Unit 0, excessive collisions %DEC21140-5-COLL: Unit 0, excessive collisions What does DEC21140 refer to? Also what is "Unit 0"? Any clues? Rayappa. --- - The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the materialfrom any computer. --- - _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: excessive collisions
If this is a fast ethernet interface, what are the speed/duplex settings on the router port and the device its connecting to? You shouldn't see collisions at 100full unless theres a equipment problem. If you have mis-configured speed/duplex or auto-negoation mismatchs then you could see collisions, late collisions, alignment errors, etc. As for this happening at 2-3pm, anything happening in your network at that time (broadcast storm, network backup, etc)? I'd do a sniffer trace and see what that reveals. As for DEC21140, thats the chipset used on the Ethernet interface. Erick --- "Raul F. Fernandez" [EMAIL PROTECTED] wrote: Hope this hepls, Error Message %DEC21140-5-COLL: [chars] excessive collisions Explanation A Fast Ethernet packet was dropped because too many attempts to transmit it were stopped by collisions. This can be caused by a Fast Ethernet segment that is full to capacity or by other equipment on the LAN malfunctioning. Recommended Action No action is required. Sincerely, Raul -Original Message- From: Rayappa Mayakunthala [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Saturday, November 18, 2000 1:19 PM Subject: excessive collisions Folks These messages appear on my router (Cisco 4700M) at a point of time everyday. This is very strange because it happens between 2pm and 3pm everyday. We tried replacing the patch cable, changing interface, etc. %DEC21140-5-COLL: Unit 0, excessive collisions %DEC21140-5-COLL: Unit 0, excessive collisions What does DEC21140 refer to? Also what is "Unit 0"? __ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: excessive collisions
Configuring the Fast Ethernet interface 0 to full duplex has fixed the problem. I will try not to take your help for granted, so thanks to all who replied on this. Rayappa. -Original Message- From: Erick B. [mailto:[EMAIL PROTECTED]] Sent: Monday, November 20, 2000 11:54 PM To: Raul F. Fernandez; Rayappa Mayakunthala; [EMAIL PROTECTED] Subject: Re: excessive collisions If this is a fast ethernet interface, what are the speed/duplex settings on the router port and the device its connecting to? You shouldn't see collisions at 100full unless theres a equipment problem. If you have mis-configured speed/duplex or auto-negoation mismatchs then you could see collisions, late collisions, alignment errors, etc. As for this happening at 2-3pm, anything happening in your network at that time (broadcast storm, network backup, etc)? I'd do a sniffer trace and see what that reveals. As for DEC21140, thats the chipset used on the Ethernet interface. Erick --- "Raul F. Fernandez" [EMAIL PROTECTED] wrote: Hope this hepls, Error Message %DEC21140-5-COLL: [chars] excessive collisions Explanation A Fast Ethernet packet was dropped because too many attempts to transmit it were stopped by collisions. This can be caused by a Fast Ethernet segment that is full to capacity or by other equipment on the LAN malfunctioning. Recommended Action No action is required. Sincerely, Raul -Original Message- From: Rayappa Mayakunthala [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Date: Saturday, November 18, 2000 1:19 PM Subject: excessive collisions Folks These messages appear on my router (Cisco 4700M) at a point of time everyday. This is very strange because it happens between 2pm and 3pm everyday. We tried replacing the patch cable, changing interface, etc. %DEC21140-5-COLL: Unit 0, excessive collisions %DEC21140-5-COLL: Unit 0, excessive collisions What does DEC21140 refer to? Also what is "Unit 0"? __ Do You Yahoo!? Yahoo! Calendar - Get organized for the holidays! http://calendar.yahoo.com/ _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the materialfrom any computer. _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: excessive collisions
DEC21140 is a FastEthernet controller, Unit 0 means FastEthernet0 being in slot 0 of your 4700M, Excessive collisions mean that a packet was dropped after trying to get on the medium for 15 times. The cause of this could be a full segment, or a faulty device. It also is important to know whether you use a hub or a switch. However according to your statement that it only happens between 2 and 3 pm I assume that the cause is to be found in a heavily loaded segment. Check your load during this time and try to decrease it if so. It could also be worthwhile to check the status of your interface (output errors, deferreds etc.) Regards, Hans On CCO: DEC21140 Fast Ethernet controller error messages Error Message %DEC21140-5-COLL: [chars] excessive collisions Explanation A Fast Ethernet packet was dropped because too many attempts to transmit it were stopped by collisions. This can be caused by a Fast Ethernet segment that is full to capacity or by other equipment on the LAN malfunctioning. Recommended Action No action is required. Rayappa Mayakunthala [EMAIL PROTECTED] schreef in berichtnieuws [EMAIL PROTECTED] Folks These messages appear on my router (Cisco 4700M) at a point of time everyday. This is very strange because it happens between 2pm and 3pm everyday. We tried replacing the patch cable, changing interface, etc. %DEC21140-5-COLL: Unit 0, excessive collisions %DEC21140-5-COLL: Unit 0, excessive collisions What does DEC21140 refer to? Also what is "Unit 0"? Any clues? Rayappa. -- -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the materialfrom any computer. -- -- _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
Thats funny, I have a spare 3640 that I could use in place of the 4500. I would need to purchase an Ethernet module though. On paper the 3640 and the 4500 seem very similiar performance wise, both have 100MHZ Risc processors and have the same amount of memory. The 3640 can handle up to 128MB thought I think. What would be the advantage of replacing the 4500 with the 3640? Lonnie ""Brad Ellis"" [EMAIL PROTECTED] wrote in message 8pkcmr$djc$[EMAIL PROTECTED]">news:8pkcmr$djc$[EMAIL PROTECTED]... sell it and buy a 3620 with a couple of FE's. -B ""Lonnie Paschall"" [EMAIL PROTECTED] wrote in message 8pj5mq$fbn$[EMAIL PROTECTED]">news:8pj5mq$fbn$[EMAIL PROTECTED]... I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
What are the stats? "Excessive" is highly relative. You may be seeing a lot of collisions, but that would be expected if you have a lot of traffic through that port. If there is no setting in the 4500 for speed or duplex, then it is running 10 Mbps/half duplex. In half duplex world, collisions happen by design. I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
Thank you. I verified that the module that I have is only half duplex / 10BaseT and the collisions are not as excessive as I first thought. Lonnie "John Neiberger" [EMAIL PROTECTED] wrote in message 28604443.968697144957.JavaMail.imail@tiptoe">news:28604443.968697144957.JavaMail.imail@tiptoe... What are the stats? "Excessive" is highly relative. You may be seeing a lot of collisions, but that would be expected if you have a lot of traffic through that port. If there is no setting in the 4500 for speed or duplex, then it is running 10 Mbps/half duplex. In half duplex world, collisions happen by design. I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
If you have the old NP-2E, your ports are 10mbps half duplex. If you have the newer NP-2E-FDX, you have the option to set port duplex on the RJ-45 ports (not the AUIs) with the commands HALF-DUPLEX or FULL-DUPLEX at the config-if prompt. You can't set speed on a 10mbps module. The NP-1FE does support the SPEED command, but if you have a 2-port ethernet module it's definitely just 10mbps. -Gabriel McCall, CCDP/CCNP+Sec ""Lonnie Paschall"" [EMAIL PROTECTED] wrote in message 8pj5mq$fbn$[EMAIL PROTECTED]">news:8pj5mq$fbn$[EMAIL PROTECTED]... I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
Older models of the two port ethernet module for the 45xx series do not do full duplex. Newer models (last year or so) can do full duplex. (I think) No models do 100 meg, you need a FastEthernet module for that so you can't config speed. So I would wager that you have 2 ports of 10 meg half duplex. Configure your switches accordingly. Kevin Wigle - Original Message - From: "John Neiberger" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, September 11, 2000 2:32 PM Subject: Re: Excessive collisions What are the stats? "Excessive" is highly relative. You may be seeing a lot of collisions, but that would be expected if you have a lot of traffic through that port. If there is no setting in the 4500 for speed or duplex, then it is running 10 Mbps/half duplex. In half duplex world, collisions happen by design. I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
You may want to set your switch speed to 10Mbits an match up your duplex too. Duck - Original Message - From: Lonnie Paschall [EMAIL PROTECTED] Newsgroups: groupstudy.cisco To: [EMAIL PROTECTED] Sent: Monday, September 11, 2000 10:45 AM Subject: Excessive collisions I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive collisions
sell it and buy a 3620 with a couple of FE's. -B ""Lonnie Paschall"" [EMAIL PROTECTED] wrote in message 8pj5mq$fbn$[EMAIL PROTECTED]">news:8pj5mq$fbn$[EMAIL PROTECTED]... I have a 4500 with a two port Ethernet module. Each port on the module connects to a different 2924 switch and is in a different subnet. I keep getting excessive collisions on the Ethernet interfaces, no runts, no giants, no CRC errors, just collisions. Any thoughts? There is no command to set the duplex or speed on the module. Thanks, Lonnie **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Excessive Collisions
Well a good thing to do is to segment your network. As you are working with hubs, you'll get a big collision domain. It is more expensive but exchanging the hubs with 3500 switches is a good idea. This way you can make seperate VLAN's. With these VLAN's you'll get smaller collision domains. Every workstation gets a connection to the switch. This way every workstation has got an own collision domain. Wich means it isn't interfearing with other workstations. Maybe there are some other ways to do this, but this is my opinion on how to solve your problems. JT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Sunday, August 27, 2000 5:42 PM To: [EMAIL PROTECTED] Subject: Excessive Collisions Sensitivity: Personal Hi Group, A client's LAN was implemented with a stack of three Cabletron hubs and the Ethernet interface of a Cisco 2522 router has three secondary addresses in addition to the primary. There are two Windows NT servers and about thirty workstations. The problem is that we've been having a lot of excessive collisions on the Ethernet interface and therefore have decided to introduce CAT 5002 switch in to the LAN. How best can we modify the LAN with the hubs and the switch to reduce the collisions? Any opinion is welcome. Regards, Stanny. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Excessive Collisions
Three secondarys because we use VLSM in an OSPF environment of small subnets. The router has only a link with the internal WAN. It is the only interface between the LAN and the rest of the corporate network. Thanks for your suggestion. Stanny. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: Excessive Collisions
On Sun, 27 Aug 2000 [EMAIL PROTECTED] wrote: Hi Group, A client's LAN was implemented with a stack of three Cabletron hubs and the Ethernet interface of a Cisco 2522 router has three secondary addresses in addition to the primary. There are two Windows NT servers and about thirty workstations. by having three subnets, you are causing traffic between subnets to be twice as much as if they were a single subnet. This is because each packet must goto the router, and then back out the interface to the destination, which is all on the same collision domainso that can be bad for collisions for one. One way to solve this is to run an IGP so that workstations can realize that the addreses are actually reachable directly. The problem is that we've been having a lot of excessive collisions on the Ethernet interface and therefore have decided to introduce CAT 5002 switch in to the LAN. How best can we modify the LAN with the hubs and the switch to reduce the collisions? Any opinion is welcome. switch as much as possible, hub as less as possible :) Seriously, you will have to first start by examining your traffic flows. Regards, Stanny. ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] --- Brian Feeny, CCNA, CCDA [EMAIL PROTECTED] Network Administrator ShreveNet Inc. (ASN 11881) ___ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
