[c-nsp] Cisco 2811 performance issue - dual(new) isp

Chuck Church chuckchurch at gmail.com
Thu Dec 22 14:05:53 EST 2011


The router is process switching (and dropping) a lot of packets.  I'd try it
without CBAC and with ip virtual-reassembly disabled.  See if you can get it
to work at close to wirerate before re-enabling features.  Might be worth
trying a recent mainline 15.0 release, I seem to remember lots of weirdness
on an 870 ISR running 12.4(24)T.

 

 

Thanks,

 

Chuck

 

From: Jmail Clist [mailto:jmlist80 at gmail.com] 
Sent: Thursday, December 22, 2011 12:09 PM
To: Chuck Church
Cc: cisco-nsp at puck.nether.net; vinny at abellohome.ne
Subject: Re: [c-nsp] Cisco 2811 performance issue - dual(new) isp

 

The fa0/1 interface literally plugs into the cable modem for the ISP. Do you
think I should increase the buffer size a bit for that interface? I'm sure
there is a command for that. I added another  "sh int" and the full "sh
buffer" output near the bottom of this message.

 

#sh ver
Cisco IOS Software, 2800 Software (C2800NM-ADVENTERPRISEK9-M), Version
12.4(24)T


FastEthernet0/1 buffers, 1536 bytes (total 384, permanent 384):
     0 in free list (0 min, 384 max allowed)
     384 hits, 0 fallbacks
     384 max cache size, 256 in cache
     29489950 hits in cache, 0 misses in cache

interface FastEthernet0/1
 ip address x.x.x.x 255.255.255.0
 ip access-group BLOCK in
 no ip redirects
 ip nat outside
 ip inspect ISP2-cbac out
 ip virtual-reassembly
 duplex auto
 speed auto

 

sh int fa0/1
FastEthernet0/1 is up, line protocol is up
  Hardware is MV96340 Ethernet, address is 0015.f956.d549 (bia
0015.f956.d549)
  Internet address is x.x.x.x/24
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 1d12h
  Input queue: 0/75/167/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 267000 bits/sec, 84 packets/sec
  5 minute output rate 49000 bits/sec, 24 packets/sec
     9017021 packets input, 2522442236 bytes
     Received 7072336 broadcasts, 0 runts, 0 giants, 18 throttles
     1934 input errors, 0 CRC, 0 frame, 0 overrun, 1934 ignored
     0 watchdog
     0 input packets with dribble condition detected
     1425142 packets output, 377562825 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

 

rtr2811#sh buffer
Buffer elements:
     687 in free list (1119 max allowed)
     80677703 hits, 0 misses, 619 created

Public buffer pools:
Small buffers, 104 bytes (total 106, permanent 50, peak 248 @ 1d02h):
     86 in free list (20 min, 150 max allowed)
     670704026 hits, 5941 misses, 4870 trims, 4926 created
     1577 failures (0 no memory)
Middle buffers, 600 bytes (total 41, permanent 25, peak 262 @ 7w0d):
     39 in free list (10 min, 150 max allowed)
     547716007 hits, 1867 misses, 3051 trims, 3067 created
     421 failures (0 no memory)
Big buffers, 1536 bytes (total 52, permanent 50, peak 122 @ 2d01h):
     35 in free list (5 min, 150 max allowed)
     6473777 hits, 98 misses, 133 trims, 135 created
     36 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 10, permanent 10, peak 12 @ 19:59:39):
     10 in free list (0 min, 100 max allowed)
     26150 hits, 7 misses, 2 trims, 2 created
     6 failures (0 no memory)
Large buffers, 5024 bytes (total 1, permanent 0, peak 1 @ 1d00h):
     1 in free list (0 min, 10 max allowed)
     0 hits, 6 misses, 9 trims, 10 created
     6 failures (0 no memory)
Huge buffers, 18024 bytes (total 1, permanent 0, peak 1 @ 1d00h):
     1 in free list (0 min, 4 max allowed)
     0 hits, 6 misses, 9 trims, 10 created
     6 failures (0 no memory)

Interface buffer pools:
Onboard DSPRM Pool buffers, 264 bytes (total 300, permanent 300):
     0 in free list (0 min, 300 max allowed)
     300 hits, 0 fallbacks
     300 max cache size, 300 in cache
     991346 hits in cache, 0 misses in cache
Syslog ED Pool buffers, 600 bytes (total 132, permanent 132):
     100 in free list (132 min, 132 max allowed)
     532 hits, 0 misses
CD2430 I/O buffers, 1536 bytes (total 0, permanent 0):
     0 in free list (0 min, 0 max allowed)
     0 hits, 0 fallbacks
IPC buffers, 4096 bytes (total 140, permanent 140):
     140 in free list (70 min, 280 max allowed)
     0 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)

Header pools:
Header buffers, 0 bytes (total 768, permanent 768):
     256 in free list (128 min, 1024 max allowed)
     512 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
     512 max cache size, 512 in cache
     103 hits in cache, 0 misses in cache
C5510 Header Pool buffers, 0 bytes (total 768, permanent 768):
     256 in free list (128 min, 1024 max allowed)
     512 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
     512 max cache size, 512 in cache
     986899 hits in cache, 0 misses in cache

Particle Clones:
     1024 clones, 101871 hits, 0 misses

Public particle pools:
F/S buffers, 256 bytes (total 768, permanent 768):
     256 in free list (128 min, 1024 max allowed)
     512 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
     512 max cache size, 512 in cache
     0 hits in cache, 0 misses in cache
Normal buffers, 1548 bytes (total 768, permanent 768):
     768 in free list (128 min, 1024 max allowed)
     0 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)




 

On Wed, Dec 21, 2011 at 3:04 PM, Chuck Church <chuckchurch at gmail.com> wrote:

Hmmm.  Well, there are a few variables.  If one site does give you good
results, then the router might not be totally at fault.  You are getting
'ignore' errors on the interface with CBAC enabled, that's definitely
slowing things down, as you're getting re-transmits and TCP window starting
small again.   Just curious, what does 'sh buffer' output look like?

 

 

Thanks,

 

Chuck

 

From: Jmail Clist [mailto:jmlist80 at gmail.com] 
Sent: Tuesday, December 20, 2011 11:43 PM
To: Chuck Church


Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Cisco 2811 performance issue - dual(new) isp

 

Chuck,

 

Interesting. Not sure why it was so low.  I switched back to this new ISP
conn on fa0/1 tonight and ran some more tests. Below is various output
immediately after testing. The second set of show outputs is after I applied
CBAC inbound and a generic deny extended access list outbound on fa0/1. The
CBAC is definitely raising my cpu, as expected.

Performance is still low in my opinion, at least with testing on most "test"
sites. The only site that gave me great results was speakeasy.net.

 

rtr2811#sh int switching | begin  FastEthernet0/1
FastEthernet0/1
          Throttle count         11
                   Drops         RP         11         SP          0
             SPD Flushes       Fast          0        SSE          0
             SPD Aggress       Fast          0
            SPD Priority     Inputs   20030942      Drops          0

    Protocol  IP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process      66120   22268396      37079    4417563
            Cache misses          0          -          -          -
                    Fast     410053  477119555     351638  183218275
               Auton/SSE          0          0          0          0

    Protocol  DEC MOP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          0          0       8697     669669
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  ARP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out

 

rtr2811#sh int fa0/1
FastEthernet0/1 is up, line protocol is up
  Hardware is MV96340 Ethernet, address is 0015.f956.d549 (bia
0015.f956.d549)
  Internet address is 200.200.200.200/24
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:02, output hang never
  Last clearing of "show interface" counters 00:01:49
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 731000 bits/sec, 108 packets/sec
  5 minute output rate 357000 bits/sec, 45 packets/sec
     17949 packets input, 14940931 bytes
     Received 5515 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     11012 packets output, 9300361 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets

 

rtr2811#sh proc cpu sorted 1min
CPU utilization for five seconds: 9%/1%; one minute: 14%; five minutes: 13%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
  80 <tel:80%C2%A0%C2%A0%C2%A0%2097347040>     97347040   262361459
371  1.75%  1.77%  1.76%   0 IGMP Snooping Re
 118    84936308   283025140        300  1.67%  1.54%  1.52%   0 IP Input

  19     9391432    30838598        304  0.31%  1.20%  1.28%   0 ARP Input

 182      392060  1300284614          0  1.03%  1.12%  1.12%   0 HQF Shaper
Backg
  92    19052984    60835327        313  0.39%  0.49%  0.50%   0 ILPM

   3     2197644    20210291        108  0.23%  0.31%  0.31%   0 Skinny Msg
Serve
 314      169248   163513044          1  0.31%  0.30%  0.31%   0 PPP manager

 125        1464        1486        985  0.47%  0.16%  0.12% 514 SSH Process

   5    11185972      797585      14024  0.00%  0.15%  0.17%   0 Check heaps

 315       88332   163513044          0  0.15%  0.14%  0.15%   0 PPP Events

  91     6798308     5230434       1299  0.07%  0.12%  0.13%   0 tCOUNTER

 --More--


///////////////////////////////////////////////////////
After CBAC applied outbound/extended deny all access-list  inbound

 

FastEthernet0/1 is up, line protocol is up
  Hardware is MV96340 Ethernet, address is 0015.f956.d549 (bia
0015.f956.d549)
  Internet address is 200.200.200.200/24
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 3/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:16:44
  Input queue: 1/75/75/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 1445000 bits/sec, 183 packets/sec
  5 minute output rate 527000 bits/sec, 94 packets/sec
     162975 packets input, 141570515 bytes
     Received 51776 broadcasts, 0 runts, 0 giants, 6 throttles
     379 input errors, 0 CRC, 0 frame, 0 overrun, 379 ignored
     0 watchdog
     0 input packets with dribble condition detected
     80662 packets output, 52976137 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets

------
sh proc cpu sorted 1min
CPU utilization for five seconds: 11%/2%; one minute: 20%; five minutes: 19%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 118    84950740   283074993        300  1.75%  1.81%  1.78%   0 IP Input

  80 <tel:80%C2%A0%C2%A0%C2%A0%2097371132>     97371132   262405939
371  1.83%  1.79%  1.77%   0 IGMP Snooping Re
  19     9408864    30883468        304  1.35%  1.29%  1.46%   0 ARP Input

 182      392968  1300500059          0  1.11%  1.12%  1.12%   0 HQF Shaper
Backg
 321     3856440     2264838       1702  0.00%  0.86%  0.78%   0 SNMP ENGINE

  92    19056692    60845592        313  0.39%  0.48%  0.50%   0 ILPM

   3     2198364    20213772        108  0.31%  0.32%  0.31%   0 Skinny Msg
Serve
 314      169656   163540744          1  0.31%  0.30%  0.31%   0 PPP manager

 319     2108780     4252988        495  0.07%  0.24%  0.16%   0 IP SNMP

   5    11188032      797728      14024  0.00%  0.22%  0.19%   0 Check heaps


 

sh ip traffic
FastEthernet0/1
          Throttle count         17
                   Drops         RP         86         SP          0
             SPD Flushes       Fast          0        SSE          0
             SPD Aggress       Fast          0
            SPD Priority     Inputs   20080830      Drops          0

    Protocol  IP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process      66747   22533286      37856    4562880
            Cache misses          0          -          -          -
                    Fast     509124  600798823     421307  227932429
               Auton/SSE          0          0          0          0

    Protocol  DEC MOP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                 Process          0          0       8698     669746
            Cache misses          0          -          -          -
                    Fast          0          0          0          0
               Auton/SSE          0          0          0          0

    Protocol  ARP
          Switching path    Pkts In   Chars In   Pkts Out  Chars Out

On Tue, Dec 20, 2011 at 12:51 PM, Chuck Church <chuckchurch at gmail.com>
wrote:

Are you sure your NAT/PAT statements are right?  I think you said in an
earlier email this output below was done right after the speedtest.
However, the 5 minute load interval for fa0/1 shows only 1 pps output on
this interface.  The input packets look like all ARP, based on the int
switching info.  Is your traffic really going out the original circuit?

Chuck


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Jmail Clist

Sent: Tuesday, December 20, 2011 9:58 AM
To: Daniel Hooper

Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Cisco 2811 performance issue - dual(new) isp

Here is a show proc, show ip traffic and show int switching. Any feedback
is very much appreciated.

rtr2811#show proc cpu sorted 1min
CPU utilization for five seconds: 26%/17%; one minute: 13%; five minutes:
13%
 PID Runtime(ms)     Invoked      uSecs   5Sec   1Min   5Min TTY Process
 80 95570780 <tel:80%20%20%20%2095570780>    257773304        370  1.83%
1.75%  1.76%   0 IGMP
Snooping Re
 118    83345888   278039819        299  1.51%  1.59%  1.67%   0 IP
Input
 19     8380332    26051685        321  2.31%  1.33%  1.34%   0 ARP
Input
 182      382324  1277585313          0  1.35%  1.14%  1.12%   0 HQF Shaper
Backg
 92    18735164    59773255        313  0.63%  0.51%  0.50%   0
ILPM
 125       10440        8415       1240  0.00%  0.45%  0.73% 514 SSH
Process
  3     2156048    19855473        108  0.31%  0.31%  0.31%   0 Skinny Msg
Serve
 314      166160   160658064          1  0.31%  0.31%  0.31%   0 PPP
manager
  5    10986872      783696      14019  0.00%  0.21%  0.18%   0 Check
heaps
 315       86412   160658064          0  0.15%  0.14%  0.15%   0 PPP
Events
 91     6677076     5139100       1299  0.15%  0.12%  0.13%   0
tCOUNTER
--------------------
rtr2811#sh ip traffic
IP statistics:
 Rcvd:  5677 total, 231 local destination
        0 format errors, 0 checksum errors, 7 bad hop count
        0 unknown protocol, 5358 not a gateway
        0 security failures, 0 bad options, 0 with options
 Opts:  0 end, 0 nop, 0 basic security, 0 loose source route
        0 timestamp, 0 extended security, 0 record route
        0 stream ID, 0 strict source route, 0 alert, 0 cipso, 0 ump
        0 other
 Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble
        0 fragmented, 0 fragments, 0 couldn't fragment
 Bcast: 33 received, 0 sent
 Mcast: 0 received, 21 sent
 Sent:  225 generated, 11351 forwarded
 Drop:  3 encapsulation failed, 0 unresolved, 0 no adjacency
        0 no route, 0 unicast RPF, 0 forced drop
        0 options denied
 Drop:  0 packets with source IP address zero
 Drop:  0 packets with internal loop back IP address
        0 physical broadcast
ICMP statistics:
 Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 0 unreachable
       60 echo, 0 echo reply, 0 mask requests, 0 mask replies, 0 quench
       0 parameter, 0 timestamp, 0 timestamp replies, 0 info request, 0
other
       0 irdp solicitations, 0 irdp advertisements
       0 time exceeded, 0 info replies
 Sent: 32 redirects, 0 unreachable, 0 echo, 61 echo reply
       0 mask requests, 0 mask replies, 0 quench, 0 timestamp, 0 timestamp
replies
       0 info reply, 0 time exceeded, 0 parameter problem
       0 irdp solicitations, 0 irdp advertisements
UDP statistics:
 Rcvd: 40 total, 0 checksum errors, 34 no port
 Sent: 23 total, 0 forwarded broadcasts
TCP statistics:
 Rcvd: 135 total, 0 checksum errors, 0 no port
 Sent: 116 total
BGP statistics:
 Rcvd: 0 total, 0 opens, 0 notifications, 0 updates
       0 keepalives, 0 route-refresh, 0 unrecognized
 Sent: 0 total, 0 opens, 0 notifications, 0 updates
       0 keepalives, 0 route-refresh
IP-EIGRP statistics:
 Rcvd: 0 total
 Sent: 0 total
PIMv2 statistics: Sent/Received
 Total: 0/0, 0 checksum errors, 0 format errors
 Registers: 0/0 (0 non-rp, 0 non-sm-group), Register Stops: 0/0,  Hellos:
0/0
 Join/Prunes: 0/0, Asserts: 0/0, grafts: 0/0
 Bootstraps: 0/0, Candidate_RP_Advertisements: 0/0
 Queue drops: 0
 State-Refresh: 0/0
IGMP statistics: Sent/Received
 Total: 0/0, Format errors: 0/0, Checksum errors: 0/0
 Host Queries: 0/0, Host Reports: 0/0, Host Leaves: 0/0
 DVMRP: 0/0, PIM: 0/0
 Queue drops: 0
OSPF statistics:
 Rcvd: 0 total, 0 checksum errors
       0 hello, 0 database desc, 0 link state req
       0 link state updates, 0 link state acks
 Sent: 0 total
       0 hello, 0 database desc, 0 link state req
       0 link state updates, 0 link state acks
ARP statistics:
 Rcvd: 2916 requests, 0 replies, 0 reverse, 0 other
 Sent: 2 requests, 5 replies (0 proxy), 0 reverse
 Drop due to input queue full: 0
rtr2811#
------------------
FastEthernet0/1 is up, line protocol is up
 Hardware is MV96340 Ethernet, address is 0015.f956.d549 (bia
0015.f956.d549)
 Internet address is 200.200.200.200/24
 MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
    reliability 255/255, txload 1/255, rxload 1/255
 Encapsulation ARPA, loopback not set
 Keepalive set (10 sec)
 Full-duplex, 100Mb/s, 100BaseTX/FX
 ARP type: ARPA, ARP Timeout 04:00:00
 Last input 00:00:00, output 00:00:02, output hang never
 Last clearing of "show interface" counters 00:04:13
 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
 Queueing strategy: fifo
 Output queue: 0/40 (size/max)
 5 minute input rate 115000 bits/sec, 64 packets/sec
 5 minute output rate 18000 bits/sec, 1 packets/sec
    24064 packets input, 9171019 bytes
    Received 17645 broadcasts, 0 runts, 0 giants, 0 throttles
    0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
    0 watchdog
    0 input packets with dribble condition detected
    4516 packets output, 2399483 bytes, 0 underruns
    0 output errors, 0 collisions, 0 interface resets
------------------------
sh int switching
FastEthernet0/1
         Throttle count         10
                  Drops         RP         10         SP          0
            SPD Flushes       Fast          0        SSE          0
            SPD Aggress       Fast          0
           SPD Priority     Inputs   15397736      Drops          0
   Protocol  IP
         Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                Process      49490   16769897      30321    3863531
           Cache misses          0          -          -          -
                   Fast     249838  281487351     229388  101233546
              Auton/SSE          0          0          0          0
   Protocol  DEC MOP
         Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                Process          0          0       8548     658196
           Cache misses          0          -          -          -
                   Fast          0          0          0          0
              Auton/SSE          0          0          0          0
    Protocol  ARP
         Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                Process   15397767  923866020        919      55140
           Cache misses          0          -          -          -
                   Fast          0          0          0          0
              Auton/SSE          0          0          0          0
   Protocol  CDP
         Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                Process          0          0       4675    1907390
           Cache misses          0          -          -          -
                   Fast          0          0          0          0
              Auton/SSE          0          0          0          0
Protocol  Other
         Switching path    Pkts In   Chars In   Pkts Out  Chars Out
                Process          0          0     514555   30873300
           Cache misses          0          -          -          -
                   Fast          0          0          0          0
              Auton/SSE          0          0          0          0
   NOTE: all counts are cumulative and reset only after a reload.


On Tue, Dec 20, 2011 at 2:03 AM, Daniel Hooper <dhooper at gold.net.au> wrote:

> I have no faith in sites like speedtest.net actually reporting the true
> speed of your link.
>
> Use your ISP's local FTP site  & mirror sites or find one close to them
> upstream and perform testing.
>
> -Dan
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:
> cisco-nsp-bounces at puck.nether.net] On Behalf Of Jmail Clist
>  Sent: Tuesday, 20 December 2011 11:42 AM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Cisco 2811 performance issue - dual(new) isp
>
> I have attached another log called "latest_2811_logs". it contains the "sh
> ip traffic, sh int switching and a "show proc cpu sorted 1min" output
> immediately after doing a test on speedguide.net through the new isp2
> connection. I see some throttle drops but not much more. I'm still puzzled
> at the poor performance. I put the interface back to auto as well and teh
> results are the same. Any ideas?
>
> On Mon, Dec 19, 2011 at 9:03 PM, Christopher J. Wargaski
> <wargo1 at gmail.com>wrote:
>
> > According to
> > http://www.cisco.com/web/partners/downloads/765/tools/quickreference/r
> > outerperformance.pdf, the router can handle up to 16.44 Mbps of fast /
> > CEF switching. I was not able to see your attachments in the digest
> > nor in the archive. Do you have CEF enabled?
> >
> > cjw
> >
> >
> > Date: Mon, 19 Dec 2011 10:57:11 -0600
> >> From: Jmail Clist <jmlist80 at gmail.com>
> >>
> >> To: cisco-nsp at puck.nether.net
> >> Subject: [c-nsp] Cisco 2811 performance issue - dual(new) isp
> >> Message-ID:
> >>        <CAO8NJwLyKmQj8jUJTYg2_82fyxyyQLRuCOraaeH3BG9ONPr8=
> >> Q at mail.gmail.com>
> >> Content-Type: text/plain; charset="iso-8859-1"
> >>
> >>
> >> Hello,
> >>
> >> I have an issue that is really causing me grief. I recentely
> >> inherited a small network. There is an existing 1.5mbps Internet
> >> connection (fa0/0) (includes MPLS as well/same provider). We added a
> >> new ISP that allows for 50mb down/5mb up. I added the new ISP to
> >> fa0/1 and modified the NAT overload statements accordingly. I alo
> >> changed the default route to ONLY use the new, faster ISP connection.
> >> Using speedguide.net, I am only able to get 6 to 10mb down, most of
> >> the time. if I plug a laptop into the cable modem then I get 37 to
> >> 50mb down. Any idea why the 2811 is so slow? How much download speed
> >> can I expect to get? Any assisstance would be very much appreciated.
> >>
> >> I have attached the config and various show outputs (nat, sh ver,
> >> memory, etc.).
> >>
> >> Thank you,
> >>
> >
>

_______________________________________________
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