From: Aseltine, Dick (dick.aseltine@centrepath.com)
Date: Tue May 18 2004 - 20:15:33 EDT
I'm receiving RxPause frames on a Cisco 6500 switch. I've tuned tcp as follows
and tried different values. This system is a NFS client. There are not any
RxPause frames on the server. I replaced the ge interface, the fibre cable,
and the gbic on the switch.
Is there any tuning that I missed or are these older GigE (ge) card junk?
System - 4500, Sol 9, 4g mem, 4 cpu, lastest patches.
Server - EMC Celerra
Note: I do not receive RxPauses frames from a V440 4cpu, 8g
#
ndd -set /dev/ge adv_1000autoneg_cap 0
ndd -set /dev/ge adv_1000fdx_cap 1
ndd -set /dev/ge adv_1000hdx_cap 0
ndd -set /dev/ge adv_pauseTX 1
ndd -set /dev/ge adv_pauseRX 1
#
ndd -set /dev/tcp tcp_xmit_hiwat 65535
ndd -set /dev/tcp tcp_recv_hiwat 65535
ndd -set /dev/tcp tcp_max_buf 4194304
ndd -set /dev/tcp tcp_cwnd_max 2097152
ndd -set /dev/tcp tcp_deferred_ack_interval 16
I also tried the following parameters:
ndd -set /dev/tcp tcp_time_wait_interval 60000
ndd -set /dev/tcp tcp_conn_req_max_q 16384
ndd -set /dev/tcp tcp_conn_req_max_q0 16384
ndd -set /dev/tcp tcp_ip_abort_interval 60000
ndd -set /dev/tcp tcp_keepalive_interval 7200000
ndd -set /dev/tcp tcp_rexmit_interval_initial 4000
ndd -set /dev/tcp tcp_rexmit_interval_max 10000
ndd -set /dev/tcp tcp_rexmit_interval_min 3000
ndd -set /dev/tcp tcp_smallest_anon_port 32768
ndd -set /dev/tcp tcp_xmit_hiwat 131072
ndd -set /dev/tcp tcp_recv_hiwat 131072
I replaced the ge interface, the fibre cable, and the gbic on the switch.
TIA
Rick
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