[c-nsp] NAT, rpr-plus and dCEF on 7500

[Walter Keen]

We have a 7500 with RSP8's, terminating ATM DS3 circuits with bridging and pppoa.  Unfortunately we are forced to do NAT on some of these, but during testing, if we turn dCEF on, performance (and console responsiveness) slow to a crawl and throughput is roughly 2mbit.  If we leave CEF enabled but disable dCEF, we get 50+mbit of throughput with roughly a 10-20% cpu load.  IOS is rsp-jsv-mz.124-8.bin and redundancy mode is set to rpr-plus. system also has 3 vip4-80's with 256mb ram.


I'm also seeing this on most configuration changes, is this possibly an issue with rpr-plus, or this ios image?


04:43:00: %SYS-5-CONFIG_I: Configured from console by wkeen on vty1 (x.x.x.x)
04:43:25: %HA-2-IPC_ERROR: Fail to send RPC to peer. timeout                      
04:43:25: %HA-3-SYNC_ERROR: Config sync failed.                                   
04:43:25: %HA-5-SYNC_RETRY: Reloading standby and retrying sync operation (retry 1).
04:43:25: %SYS-5-CONFIG_I: Configured from console by wkeen on vty1 (x.x.x.x)  
04:43:40: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant     
04:43:40: %HA-5-MODE: Operating mode is hsa, configured mode is rpr-plus.           
04:43:43: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave     
04:43:48: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant     
04:43:51: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave     
04:43:56: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant     
04:43:58: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave
04:44:04: %SYS-5-CONFIG_I: Configured from console by wkeen on vty1 (x.x.x.x)
04:44:32: %SYS-5-CONFIG_I: Configured from console by wkeen on vty1 (x.x.x.x)
04:44:42: %HA-5-NOTICE: Standby (slave) configured to run HA image "disk0:rsp-jsv-mz.124-8.bin"
04:44:43: %HA-5-NOTICE: Loading standby (slave) image: "disk0:rsp-jsv-mz.124-8.bin"
sea-agg-1(config)#
04:45:51: %HA-5-MODE: Operating mode is hsa, configured mode is rpr-plus.
04:45:51: %HA-5-SYNC_NOTICE: Bulk sync started.
04:45:51: %HA-5-SYNC_NOTICE: Bulk sync completed.
04:46:29: %HA-5-SYNC_NOTICE: Config sync started.
04:46:56: %HA-5-SYNC_NOTICE: Config sync completed.
04:47:01: %HA-5-SYNC_NOTICE: Standby has restarted.
04:47:02: %HA-5-MODE: Operating mode is rpr-plus, configured mode is rpr-plus.
04:47:22: %HA-2-IPC_ERROR: Fail to send RPC to peer. timeout
04:47:23: %HA-3-SYNC_ERROR: Config sync failed.
04:47:23: %HA-5-SYNC_RETRY: Reloading standby and retrying sync operation (retry 1).
04:47:23: %SYS-5-CONFIG_I: Configured from console by wkeen on vty1 (x.x.x.x)
04:47:38: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant
04:47:38: %HA-5-MODE: Operating mode is hsa, configured mode is rpr-plus.
04:47:40: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave
04:47:46: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant
04:47:48: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave
04:47:53: %RSP-3-SLAVECHANGE: Slave changed state from Slave to Non-participant
04:47:56: %RSP-3-SLAVECHANGE: Slave changed state from Non-participant to Slave
04:48:39: %HA-5-NOTICE: Standby (slave) configured to run HA image "disk0:rsp-jsv-mz.124-8.bin"
04:48:40: %HA-5-NOTICE: Loading standby (slave) image: "disk0:rsp-jsv-mz.124-8.bin"
04:49:48: %HA-5-MODE: Operating mode is hsa, configured mode is rpr-plus.
04:49:48: %HA-5-SYNC_NOTICE: Bulk sync started.
04:49:48: %HA-5-SYNC_NOTICE: Bulk sync completed.
04:50:27: %HA-5-SYNC_NOTICE: Config sync started.
04:52:52: %HA-5-SYNC_NOTICE: Config sync completed.
04:52:58: %HA-5-SYNC_NOTICE: Standby has restarted.
04:52:58: %HA-5-MODE: Operating mode is rpr-plus, configured mode is rpr-plus.