04-17-2016 05:07 AM - edited 03-08-2019 05:23 AM
Hello Guys
We are having issue after upgrading the ISP link from 40mbps to 100 mbps
checking on speed test website getting only 35 to 45 mbps max download speed however ISP confirmed form there side (testing directly from their link after router) that its 100 mbps on ADSL (dialer interface from FastEthernet0/1/0)
no change done on router & MTU and MSS are same as earlier.
any suggestion to check further .below is the config of the router .
Cisco IOS Software, C1900 Software (C1900-UNIVERSALK9-M), Version 15.1(4)M5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 04-Sep-12 15:42 by prod_rel_team
ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1)
AUH-ADCG-MF-INT-RTR-01 uptime is 9 weeks, 7 hours, 1 minute
System returned to ROM by power-on
System restarted at 04:35:17 UTC Sun Feb 14 2016
System image file is "usbflash0:c1900-universalk9-mz.SPA.151-4.M5.bin"
Last reload type: Normal Reload
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third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
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If you require further assistance please contact us by sending email to
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Cisco CISCO1921/K9 (revision 1.0) with 487424K/36864K bytes of memory.
Processor board ID FCZ174191L3
1 FastEthernet interface
2 Gigabit Ethernet interfaces
1 terminal line
DRAM configuration is 64 bits wide with parity disabled.
255K bytes of non-volatile configuration memory.
249840K bytes of USB Flash usbflash0 (Read/Write)
License Info:
License UDI:
-------------------------------------------------
Device# PID SN
-------------------------------------------------
*0 CISCO1921/K9
Technology Package License Information for Module:'c1900'
-----------------------------------------------------------------
Technology Technology-package Technology-package
Current Type Next reboot
------------------------------------------------------------------
ipbase ipbasek9 Permanent ipbasek9
security None None None
data None None None
==================================================
------------------ show running-config ------------------
Building configuration...
version 15.1
service tcp-keepalives-in
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
no ipv6 cef
ip source-route
ip cef
!
!
!
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool ccp-pool
import all
network 10.10.10.0 255.255.255.248
default-router 10.10.10.1
lease 0 2
!
!
no ip domain lookup
multilink bundle-name authenticated
!
vpdn enable
!
vpdn-group 1
!
vpdn-group pppoe
!
!
!
!
!
!
!
!
bba-group pppoe global
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
description *** Lease Line Link Conneted TO ISP ***
ip address 94.56.X.X 255.255.255.252
duplex auto
speed auto
!
interface GigabitEthernet0/1
description *** Port Connected TO the Firewall ***
ip address 94.X.X.X 255.255.255.248
ip nat inside
ip virtual-reassembly in
ip policy route-map ADSL-INTERNET
duplex auto
speed auto
!
interface FastEthernet0/1/0
description *** Connected To PPP0E Network ***
no ip address
ip mtu 1492
ip tcp adjust-mss 1452
duplex auto
speed auto
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly in
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
ppp authentication pap callin
ppp pap sent-username adcg password 7 XXXXXXX
!
ip forward-protocol nd
!
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
ip nat inside source list 10 interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 172.16.10.0 255.255.255.0 X.X.X.X
ip route 172.16.11.0 255.255.255.0 X.X.X.X
!
access-list 1 permit any
access-list 10 permit 172.16.10.0 0.0.0.255
access-list 10 permit 172.16.11.0 0.0.0.255
access-list 10 permit 172.16.12.0 0.0.0.255
access-list 10 permit 172.16.13.0 0.0.0.255
access-list 10 permit 192.168.0.0 0.0.3.255
access-list 10 permit 172.16.14.0 0.0.0.255
access-list 15 permit 172.16.13.0 0.0.0.255
access-list 15 permit 172.16.10.0 0.0.0.255
access-list 15 permit 172.16.50.0 0.0.0.255
access-list 101 permit ip host X.X.X.X any
access-list 180 permit ip any any
dialer-list 1 protocol ip permit
!
route-map INTERNET permit 10
!
route-map ADSL-INTERNET permit 10
match ip address 101
set ip next-hop 94.56.X.X
!
route-map ADSL-INTERNET permit 20
!
!
!
control-plane
====================
sh int dialer 1
Dialer1 is up, line protocol is up (spoofing)
Hardware is Unknown
Internet address is 217.165.X.X/32
MTU 1500 bytes, BW 56 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 255/255, rxload 255/255
Encapsulation PPP, LCP Closed, 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 9w0d
Input queue: 0/75/54/0 (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 42 kilobits/sec
5 minute input rate 4217000 bits/sec, 477 packets/sec
5 minute output rate 1207000 bits/sec, 306 packets/sec
574969327 packets input, 490079885 bytes
391356562 packets output, 4105075203 bytes
Bound to:
Virtual-Access2 is up, line protocol is up
Hardware is Virtual Access interface
===========================
sh int fa 0/1/0
FastEthernet0/1/0 is up, line protocol is up
Hardware is FastEthernet, address is 8843.e1a0.ebd4 (bia 8843.e1a0.ebd4)
Description: *** Connected To ISP PPP0E Network ***
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 2/255, rxload 9/255
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 00:00:40, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 9093
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 3652000 bits/sec, 407 packets/sec
5 minute output rate 995000 bits/sec, 259 packets/sec
575604554 packets input, 3463193215 bytes
Received 120 broadcasts (0 IP multicasts)
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
392011521 packets output, 3309031688 bytes, 0 underruns
04-17-2016 12:41 PM
1921 cannot do 100 Mbps (one-way traffic). This model can support up to 90 Mbps one-way traffic or about 45 Mbps upload & download.
04-17-2016 09:27 PM
Thanks Leo
Can you please send me any document for the same so i can check further with our team .
I have checked one performance sheet but its doesn't helped me .
https://supportforums.cisco.com/sites/default/files/attachments/discussion/white_paper_c11_595485_17.pdf
I am getting right now 45 mbps download speed and upload is 27 mbps
04-18-2016 05:32 AM
At higher speeds, it is sometimes difficult to measure, due to latency and processing on nodes. You may find that you could run 2 simultaneous streams at 45 Meg; but a single one still can't exceed that.
04-18-2016 09:44 PM
Yes but i would require some documents for the same if you can help me out
Cisco PDI is saying its support 15mbps only! .this calculation is for all the traffic ? as when do the speed test download its having 45 download and 27 upload
Cisco PDI report:
http://www.cisco.com/en/US/partner/prod/collateral/routers/ps380/performance_2013.pdf
*Page 3
if you see below documents ,its give reports of mbps but with different (like with acl,qos etc) however i just need to know the total (w/wo) using those how much 1921 can handle the isp bandwidth for 100 mbps
http://anticisco.ru/pubs/ISR_G2_Perfomance.pdf
Old forums thread
https://supportforums.cisco.com/discussion/12010906/1921-only-15mbps-bandwidth
04-19-2016 02:59 AM
The Cisco data sheet says 15Mbps, although tests have shown this is low compared to what it is actually capable of.
http://www.cisco.com/c/en/us/products/collateral/routers/1900-series-integrated-services-routers-isr/data_sheet_c78-598389.html
There is no document which states it doesn't support 100Mbps, there is the data sheet which provides what Cisco tell you it supports. This states 15Mbps so there is your answer.
Solution - Upgrade to a Router which supports more throughput.
The document is helpful, it shows the 1921 was capable of 68Mbps when running QoS, NAT and ACLs.
https://supportforums.cisco.com/sites/default/files/attachments/discussion/white_paper_c11_595485_10.pdf
04-19-2016 06:11 AM
Another piece you have in this puzzle is the firewall - do you know, based on the model, what limitations may be placed on it?
04-19-2016 04:41 AM
What does the router's CPU stats look like when you appear to max out download performance?
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