Cisc0 7604 Logs explanation required

khizerkhan · ‎01-07-2013

Dear All,

Can somebody please explain what is the meaning of the following log messages on Cisco 7604 Core routers. The Core router is configured with 2 STM card configurations with Vlan assignments:

7604#show ver

Cisco IOS Software, c7600s72033_rp Software (c7600s72033_rp-ADVIPSERVICESK9-M), Version 12.2(33)SRD4, RELEASE SOFTWARE (fc2)

Technical Support: http://www.cisco.com/techsupport

Compiled Mon 22-Feb-10 04:32 by prod_rel_team

cisco CISCO7604 (R7000) processor (revision 2.0) with 458720K/65536K bytes of memory.

Processor board ID FOX1428GZND

SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache

Last reset from power-on

1 SIP-200 controller (8 FastEthernet)(2 Channelized OC3/STM-1).

1 SSC-400 controller (1 IPSEC).

181 Virtual Ethernet interfaces

8 FastEthernet interfaces

4 Gigabit Ethernet interfaces

393 Serial interfaces

2 Channelized STM-1 ports

1917K bytes of non-volatile configuration memory.

8192K bytes of packet buffer memory.

65536K bytes of Flash internal SIMM (Sector size 512K).

Configuration register is 0x2102

Sample Configuration of STM Card:

NBP-LHR-HO-1#show run int Serial2/0/0.1/3/7/1:2

Building configuration...

Current configuration : 148 bytes

!

interface Serial2/0/0.1/3/7/1:2

description------

ip unnumbered Null0

encapsulation ppp

crypto connect vlan 296

end

NBP-LHR-HO-1#show run int vlan 296

Building configuration...

Current configuration : 274 bytes

!

interface Vlan296

description ============ Serial2/0/0.1/3/7/1:2

ip address x.x.x.x y.y.y.y

ip ospf message-digest-key 1 md5 7 02470A591B0D0A381D1C5A

ip ospf network point-to-point

ip ospf cost 1

crypto engine slot 3/0

I am getting the following Log messages and unable to find anything about them over the internet

998856: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 198

998857: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 200

998858: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 201

998859: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 202

998860: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 203

998861: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 204

998862: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 205

998863: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 206

998864: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 207

998865: Jan 7 16:04:40.671 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 208

998866: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 211

998867: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 212

998868: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 213

998869: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 214

998870: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 215

998871: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 216

998872: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 217

998873: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 218

998874: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 219

998875: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 220

998876: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 221

998877: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 222

998878: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 223

998879: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 225

998880: Jan 7 16:04:40.675 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 226

998881: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 228

998882: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 229

998883: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 230

998884: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 231

998885: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 232

998886: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 233

998887: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 240

998888: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 241

998889: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 242

998890: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 244

998891: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 245

998892: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 246

998893: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 247

998894: Jan 7 16:04:40.679 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 249

998895: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 250

998896: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 251

998897: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 252

998898: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 253

998899: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 254

998900: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 255

998901: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 256

998902: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 258

998903: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 259

998904: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 260

998905: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 261

998906: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 262

998907: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 263

998908: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 264

998909: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 266

998910: Jan 7 16:04:40.683 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 267

998911: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 268

998912: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 269

998913: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 271

998914: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 272

998915: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 273

998916: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 275

998917: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 276

998918: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 277

998919: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 280

998920: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 281

998921: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 282

998922: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 284

998923: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 285

998924: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 286

998925: Jan 7 16:04:40.687 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 288

998926: Jan 7 16:04:40.691 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 291

998927: Jan 7 16:04:40.691 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 292

998928: Jan 7 16:04:40.691 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 293

998929: Jan 7 16:04:40.691 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 294

998930: Jan 7 16:04:40.691 GMT: macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan = 296

An urgent response would be much appreciated

Ivan Shirshin · ‎01-07-2013

Hi,

This symptoms are matching bug "CSCsy00924 Log Message macedon_cwan_rewrite_adj: Changing interface to P2P!, ifvlan".

The problem appears to be related to having an SVI configured on a vlan configured on 'crypto engine slot'. There is no discernable impact to customer traffic, but the message may fill the log buffers by generating many messages per second on a one minute cycle. The workaround is to remove the IP Address from the reported vlan.

The CSCsy00924 is fixed in SRE releases and later.

Kind Regards,
Ivan Shirshin

**Please grade this post if you find it useful.

Kind Regards,
Ivan

khizerkhan · ‎01-07-2013

Dear Ivan

Thanks for the great reply. Our other Core router is working on the similar configuration but I havent seen these log messages on that router.Is there any way to turn off these logs as they will fill out the log buffers. Also I dont understand the workaround "The workaround is to remove the IP Address from the reported vlan" . Our Core Routers are configured like the way I pasted above and Removal of IP address from VLAN will not serve the purpose.

Ivan Shirshin · ‎01-08-2013

Hi,

There are several conditions for this bug to be triggered, maybe on other routers not all of them are hit (e.g. some may not use crypto functionality).

About workaround - if you configure 'no ip address' for problem vlan, the message stops in relation to that vlan. Since removal of IP is not possible, suppressing messages can be done either by disabling logging completely or by fixing the issue with the IOS upgrade.

Kind Regards,
Ivan Shirshin

**Please grade this post if you find it useful.

Kind Regards,
Ivan