Andy B. wrote:
On Mon, Feb 15, 2010 at 2:19 PM, Tom Sands <[email protected]> wrote:
The 6704 looks like the biggest problem in this setup. We avoid them at all
cost.
What would be your recommendation then? 6708?
Absolutely, while a 2:1 card the buffers are far greater. Also,
depending on your use of it, having a DFC/DFCXL can be of great benefit.
sidenote: I may have narrowed down the issue. There is a port-channel
on te9/4 and te8/4. When I shut down one of these two interfaces, the
box is becoming very responsive again:
I would be very interested in knowing if this problem is truly resolved
and what the suspected problem/resolution was by breaking this port
channel. Since these are 6704 cards they use CFC's vs DFC's, where a
problem such as above would of made more sense if it were actually using
DFC's and the ingress of the traffic was on the same line card as the
egress of only one of the ports in the channel.
BCS#sh etherchannel 66 detail
Group state = L2
Ports: 2 Maxports = 8
Port-channels: 1 Max Port-channels = 1
Protocol: PAgP
Minimum Links: 0
Ports in the group:
-------------------
Port: Te8/4
------------
Port state = Down Not-in-Bndl
Channel group = 66 Mode = Desirable-Sl Gcchange = 0
Port-channel = null GC = 0x00000000 Pseudo
port-channel = Po66
Port index = 0 Load = 0x00 Protocol = PAgP
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Te8/4 d U1/S1 1s 0 128 Any 0
Age of the port in the current state: 5d:11h:50m:10s
Port: Te9/4
------------
Port state = Up Mstr In-Bndl
Channel group = 66 Mode = Desirable-Sl Gcchange = 0
Port-channel = Po66 GC = 0x00420001 Pseudo
port-channel = Po66
Port index = 1 Load = 0xFF Protocol = PAgP
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
d - PAgP is down.
Timers: H - Hello timer is running. Q - Quit timer is running.
S - Switching timer is running. I - Interface timer is running.
Local information:
Hello Partner PAgP Learning Group
Port Flags State Timers Interval Count Priority Method Ifindex
Te9/4 SC U6/S7 30s 1 128 Any 122
Partner's information:
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Te9/4 XXXX 0021.a050.d600 Te4/2 18s SC 420001
Age of the port in the current state: 0d:00h:05m:49s
Port-channels in the group:
----------------------
Port-channel: Po66
------------
Age of the Port-channel = 5d:11h:52m:22s
Logical slot/port = 14/4 Number of ports = 1
GC = 0x00420001 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = PAgP
Fast-switchover = disabled
Load share deferral = disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------------+------------------+-----------
1 FF Te9/4 Desirable-Sl 8
Time since last port bundled: 0d:00h:05m:49s Te9/4
Time since last port Un-bundled: 0d:00h:05m:06s Te8/4
Last applied Hash Distribution Algorithm: Fixed
This is while Te8/4 is shut down.
The other end of the channel is also a 6509 box with 1x 6704.
Andy
.
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