RE: Problems with AIM compression on 3660/2600 [7:13742]
(I'm resending due to the trouble the list server had yesterday) Check out bug id# CSCdm69595 There are several others but they don't show up on CCO (Cisco keeps some bugs private) Essentially hw compression mungs up multicast data on 2600/3600 serial interfaces. They say it was fixed in latter releases of 12.07 so you may want to try one of the 12.1 images... A few other multicast issues I've learned the hard way... Early versions of the 2621 router will not pass multicast traffic through the on board ethernet interfaces (Bug ID CSCdm38511 ) Only fix is a router swap. My office looked like a warehouse for a while we were shipping so many 2621s back to Cisco Multicast fast switching (ip mroute-cache) doesn not yet work with hardware compression (Bug ID CSCdt82560) This has not been fixed as of 12.2x. So if you are tring to save CPU by hardware compressing the multicast data you lose CPU by not being able to fast switch. I recall at least one 30 hour marathon with TAC hopping from various TAC centers worldwide. As far as I recall the 2621 hardware issue was already known at Cisco but the problem with hardware compression (both the munging of data and the fast switching issue) were only discovered when a customer (unfortunately me) tried to do it. Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 26, 2001 2:36 AM To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Hi Bob The IOS version on all the routers are 12.0(7)XK1 Simon From: Bob Johnson Reply-To: Bob Johnson To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Date: Wed, 25 Jul 2001 13:36:30 -0400 In my previous reply I'm refering to the (as far as I know..) the OSPF multicast messages being mucked up... Bob (still trying to find the bug ID) -Original Message- From: Bob Johnson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 10:01 AM To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Most likely the hardware compression is mucking up the multicast traffic... I've had many many issues with hardware compression and multicast (got to know TAC people all across the world).. I'll try to dig up the bug ID. What image are you using? Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 5:25 AM To: [EMAIL PROTECTED] Subject: Problems with AIM compression on 3660/2600 [7:13742] Hi Guys I have just installed a 3660 and 7 2600's (the 2600's connected to the 3660with 256k WAN links via 2 quad serial cards on 3660). ospf configured(all routers on area 0), I have just changed the compression from software to hardware to ultilize the AIM modules installed in both the 3660 2600's( I set up PPP Encapsulation from HDLC on all routers, and configured compress stac caim 0 on 2600's compress stac caim 0-3 on 3660) However as soon I made the change I was receiving the OSPF error message: SPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:15: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:21: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 This was happening on all the 2600's, OSPF routes were being lost, on when I reverted to software compression the problem subsided. Has anyone seen this problem before.Pls let me know Rgrds Simon. -- -- Get your FREE download of MSN Explorer at http://explorer.msn.com _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13965t=13742 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problems with AIM compression on 3660/2600 [7:13742]
Hi Bob The IOS version on all the routers are 12.0(7)XK1 Simon From: Bob Johnson Reply-To: Bob Johnson To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Date: Wed, 25 Jul 2001 13:36:30 -0400 In my previous reply I'm refering to the (as far as I know..) the OSPF multicast messages being mucked up... Bob (still trying to find the bug ID) -Original Message- From: Bob Johnson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 10:01 AM To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Most likely the hardware compression is mucking up the multicast traffic... I've had many many issues with hardware compression and multicast (got to know TAC people all across the world).. I'll try to dig up the bug ID. What image are you using? Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 5:25 AM To: [EMAIL PROTECTED] Subject: Problems with AIM compression on 3660/2600 [7:13742] Hi Guys I have just installed a 3660 and 7 2600's (the 2600's connected to the 3660with 256k WAN links via 2 quad serial cards on 3660). ospf configured(all routers on area 0), I have just changed the compression from software to hardware to ultilize the AIM modules installed in both the 3660 2600's( I set up PPP Encapsulation from HDLC on all routers, and configured compress stac caim 0 on 2600's compress stac caim 0-3 on 3660) However as soon I made the change I was receiving the OSPF error message: SPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:15: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:21: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 This was happening on all the 2600's, OSPF routes were being lost, on when I reverted to software compression the problem subsided. Has anyone seen this problem before.Pls let me know Rgrds Simon. -- -- Get your FREE download of MSN Explorer at http://explorer.msn.com _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13850t=13742 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problems with AIM compression on 3660/2600 [7:13742]
Check out bug id# CSCdm69595 There are several others but they don't show up on CCO (Cisco keeps some bugs private) Essentially hw compression mungs up multicast data on 2600/3600 serial interfaces. They say it was fixed in latter releases of 12.07 so you may want to try one of the 12.1 images... A few other multicast issues I've learned the hard way... Early versions of the 2621 router will not pass multicast traffic through the on board ethernet interfaces (Bug ID CSCdm38511 ) Only fix is a router swap. My office looked like a warehouse for a while we were shipping so many 2621s back to Cisco Multicast fast switching (ip mroute-cache) doesn not yet work with hardware compression (Bug ID CSCdt82560) This has not been fixed as of 12.2x. So if you are tring to save CPU by hardware compressing the multicast data you lose CPU by not being able to fast switch. I recall at least one 30 hour marathon with TAC hopping from various TAC centers worldwide. As far as I recall the 2621 hardware issue was already known at Cisco but the problem with hardware compression (both the munging of data and the fast switching issue) were only discovered when a customer (unfortunately me) tried to do it. Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Thursday, July 26, 2001 2:20 AM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Hi Bob The IOS version on all the routers are 12.0(7)XK1 Simon From: Bob Johnson Reply-To: Bob Johnson To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Date: Wed, 25 Jul 2001 13:36:30 -0400 In my previous reply I'm refering to the (as far as I know..) the OSPF multicast messages being mucked up... Bob (still trying to find the bug ID) -Original Message- From: Bob Johnson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 10:01 AM To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Most likely the hardware compression is mucking up the multicast traffic... I've had many many issues with hardware compression and multicast (got to know TAC people all across the world).. I'll try to dig up the bug ID. What image are you using? Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 5:25 AM To: [EMAIL PROTECTED] Subject: Problems with AIM compression on 3660/2600 [7:13742] Hi Guys I have just installed a 3660 and 7 2600's (the 2600's connected to the 3660with 256k WAN links via 2 quad serial cards on 3660). ospf configured(all routers on area 0), I have just changed the compression from software to hardware to ultilize the AIM modules installed in both the 3660 2600's( I set up PPP Encapsulation from HDLC on all routers, and configured compress stac caim 0 on 2600's compress stac caim 0-3 on 3660) However as soon I made the change I was receiving the OSPF error message: SPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:15: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:21: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 This was happening on all the 2600's, OSPF routes were being lost, on when I reverted to software compression the problem subsided. Has anyone seen this problem before.Pls let me know Rgrds Simon. -- -- Get your FREE download of MSN Explorer at http://explorer.msn.com [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13876t=13742 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problems with AIM compression on 3660/2600 [7:13742]
Most likely the hardware compression is mucking up the multicast traffic... I've had many many issues with hardware compression and multicast (got to know TAC people all across the world).. I'll try to dig up the bug ID. What image are you using? Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 5:25 AM To: [EMAIL PROTECTED] Subject: Problems with AIM compression on 3660/2600 [7:13742] Hi Guys I have just installed a 3660 and 7 2600's (the 2600's connected to the 3660with 256k WAN links via 2 quad serial cards on 3660). ospf configured(all routers on area 0), I have just changed the compression from software to hardware to ultilize the AIM modules installed in both the 3660 2600's( I set up PPP Encapsulation from HDLC on all routers, and configured compress stac caim 0 on 2600's compress stac caim 0-3 on 3660) However as soon I made the change I was receiving the OSPF error message: SPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:15: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:21: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 This was happening on all the 2600's, OSPF routes were being lost, on when I reverted to software compression the problem subsided. Has anyone seen this problem before.Pls let me know Rgrds Simon. -- -- Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13777t=13742 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Problems with AIM compression on 3660/2600 [7:13742]
In my previous reply I'm refering to the (as far as I know..) the OSPF multicast messages being mucked up... Bob (still trying to find the bug ID) -Original Message- From: Bob Johnson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 10:01 AM To: [EMAIL PROTECTED] Subject: RE: Problems with AIM compression on 3660/2600 [7:13742] Most likely the hardware compression is mucking up the multicast traffic... I've had many many issues with hardware compression and multicast (got to know TAC people all across the world).. I'll try to dig up the bug ID. What image are you using? Bob -Original Message- From: Simon Watson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 25, 2001 5:25 AM To: [EMAIL PROTECTED] Subject: Problems with AIM compression on 3660/2600 [7:13742] Hi Guys I have just installed a 3660 and 7 2600's (the 2600's connected to the 3660with 256k WAN links via 2 quad serial cards on 3660). ospf configured(all routers on area 0), I have just changed the compression from software to hardware to ultilize the AIM modules installed in both the 3660 2600's( I set up PPP Encapsulation from HDLC on all routers, and configured compress stac caim 0 on 2600's compress stac caim 0-3 on 3660) However as soon I made the change I was receiving the OSPF error message: SPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:15: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 Jul 25 03:27:21: %OSPF-4-ERRRCV: Received invalid packet: Bad Checksum from 10.100.6.1, Serial0/0 This was happening on all the 2600's, OSPF routes were being lost, on when I reverted to software compression the problem subsided. Has anyone seen this problem before.Pls let me know Rgrds Simon. -- -- Get your FREE download of MSN Explorer at http://explorer.msn.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=13783t=13742 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
