05-16-2010 03:48 AM - edited 03-04-2019 08:29 AM
I'm using 16mbps ADSL2+ line. When I use Zyxel ADSL modem itself connect to internet, I can get actual download speed at 16mbps. However if I connect Cisco 1700 bridge with Zyxel ADSL2+ modem. The internet works but I can get actual speed only at about almost 10mbps. Why is that? Is it a limitation of 1700 series router? or it is my configuration?
This is my dialer interface configuration
c1760#show run int di1
Building configuration...
Current configuration : 546 bytes
!
interface Dialer1
ip address negotiated
ip verify unicast source reachable-via rx allow-default
no ip redirects
no ip unreachables
no ip proxy-arp
ip nbar protocol-discovery
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip route-cache flow
dialer pool 1
ppp authentication pap callin
ppp pap sent-username myusername password 7 mypassword
crypto map SDM_CMAP_1
service-policy output AutoQoS-Policy-Vl1
end
c1760#show int di1
Dialer1 is up, line protocol is up (spoofing)
Hardware is Unknown
Internet address is 58.8.63.24/32
MTU 1500 bytes, BW 10000000 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 1 seconds on reset
Interface is bound to Vi2
Last input never, output never, output hang never
Last clearing of "show interface" counters 00:34:26
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 7500000 kilobits/sec
5 minute input rate 541000 bits/sec, 51 packets/sec
5 minute output rate 0 bits/sec, 36 packets/sec
302324 packets input, 406841573 bytes
191998 packets output, 13973414 bytes
Bound to:
Virtual-Access2 is up, line protocol is up
Hardware is Virtual Access interface
MTU 1500 bytes, BW 10000000 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Open
Open: IPCP
PPPoE vaccess, cloned from Dialer1
Vaccess status 0x44, loopback not set
Keepalive set (10 sec)
DTR is pulsed for 5 seconds on reset
Interface is bound to Di1 (Encapsulation PPP)
Last input 00:00:07, output never, output hang never
Last clearing of "show interface" counters 00:37:46
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 487000 bits/sec, 35 packets/sec
5 minute output rate 14000 bits/sec, 23 packets/sec
311461 packets input, 419097214 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
198366 packets output, 14392777 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
05-16-2010 03:54 AM
I don't have a 1700 with a WIC-ADSL card here at home but can your router support the command "sh dsl interface"?
05-16-2010 04:01 AM
Yes my router support sh dsl interface.
However, in my situation, I don't use WIC-ADSL as modem because WIC-ADSL doesn't support ADSL2+ speed, so I use Zyxel modem connect to fa0/0 of Cisco 1700 as WAN interface. The internet is working but speed is not.
05-16-2010 04:22 AM
That is normal, 1700 is an old model of limited performances.
if you want full speed, get an 857, 877, or newer models.
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