10-24-2007 01:30 PM - edited 03-03-2019 07:19 PM
I have a 1721 with an ethernet WIC cloned to a dialer interface. The WIC goes out to a DSL modem. My issue is that ever since I deployed this router, the speed has been diminished enough to make people complain. Its a 3mb circuit, but this is what I show when I pull up the dialer interface:
Dialer0 is up, line protocol is up (spoofing)
Hardware is Unknown
Internet address is <MASKED>
MTU 1500 bytes, BW 3000 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 11/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 1 seconds on reset
Interface is bound to Vi1
Last input never, output never, output hang never
Last clearing of "show interface" counters 1d01h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/16 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 2250 kilobits/sec
5 minute input rate 133000 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
603534 packets input, 698765983 bytes
394642 packets output, 47367523 bytes
Bound to:
Virtual-Access1 is up, line protocol is up
Hardware is Virtual Access interface
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,
reliability 255/255, txload 22/255, rxload 51/255
Encapsulation PPP, LCP Open
Open: IPCP
PPPoE vaccess, cloned from Dialer0
Vaccess status 0x44, loopback not set
Keepalive set (10 sec)
Interface is bound to Di0 (Encapsulation PPP)
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters 20:11:48
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 174000 bits/sec, 7 packets/sec
5 minute output rate 5000 bits/sec, 5 packets/sec
427406 packets input, 470254490 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
295171 packets output, 36634198 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
As you can see, the virtual-Access1 interface is showing bandwidth of 56Kbit, whisch looks like ths slowness issue. What do I need to change on my config to get this speed to where it is supposed to be? Here is my currect interfaces config:
interface Loopback0
no ip address
shutdown
!
interface Ethernet0
no ip address
ip virtual-reassembly
half-duplex
pppoe enable
pppoe-client dial-pool-number 1
no cdp enable
!
interface Ethernet0.1
shutdown
no cdp enable
!
interface FastEthernet0
description local LAN
ip address <MASKED>
ip nbar protocol-discovery
ip nat inside
ip virtual-reassembly
speed 100
full-duplex
no cdp enable
!
interface Virtual-Template1
no ip address
!
interface Dialer0
bandwidth 3000
bandwidth inherit 3000
ip address <MASKED>
ip access-group 102 in
ip mtu 1492
ip inspect FIREWALL out
ip nat outside
ip virtual-reassembly
encapsulation ppp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
dialer pool 1
dialer-group 1
ppp authentication pap chap callin
ppp chap hostname <MASKED>t
ppp chap password 7 <MASKED>
ppp pap sent-username <MASKED> password 7 <MASKED>
crypto map *********
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
Thanks for any help!
10-24-2007 01:37 PM
Hi, bandwith is an informational parameter only, to be used by routing protocol (that you don't have) when calculating metric, and for the %usage stats.
It and does not affect actual performances. Most likely, performance issues are with your ISP infrastructure.
10-24-2007 01:39 PM
Thats what I was kind of thinking. When this location was using a Linksys as a gateway, all seemed fine. When I put the 1721 in, it slowed quit a bit.
Keep in mind I am running a VPN tunnel over the DSL as well.
10-24-2007 05:38 PM
Hi,
can you set FA0 hald duplex and enable "ip route-cache cef" under all interfaces ?
Also, would you be able to add a WIC-1ADSL eliminating the adsl modem/bridge ?
There was an encryption acceleration module available for the 1720 that you may not have, but lack of it is not a probable cause anyway.
10-25-2007 07:35 AM
I had already thought about using an ADSL WIC, but I need to be sure I can use it with the ISP (Don't see why I can't). I already prepared another router with the ADSl WIC to send out.
I may also try an IOS change today, but I don't like doing those remotely.
10-25-2007 07:39 AM
Models that does that w/ integrate interface are the 877 and the 1801. These also supports adsl2+.
10-25-2007 07:54 AM
Is there any chance the IOS type could be causing issues? I am using c1700-advsecurityk9-mz.124-1c.bin
10-25-2007 09:42 AM
it would be safe to upgrade to latest maintenance release of 12.4 that is now (17).
10-25-2007 10:32 AM
Should I keep using the Advanced Security IOS or the IP/ADSL/FW/IDS PLUS IPSEC 3DES IOS?
10-25-2007 11:18 AM
Hi,
Adv. Security is fine as long you don't need the other features, that takes 96 mb ram / 32 flash, while the Adv sec. only requires 64 / 16.
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