Why does WAN2 share upload bandwidth with WAN1 when uploading?

weibin · ‎02-16-2025

I have two PPPoE connections, WAN1 and WAN2, each with an upload bandwidth of 50Mbps. There are no issues with OpenWRT, but with the Cisco router, WAN2's upload affects WAN1.

Router-C1111#show pppoe session all 
Total PPPoE sessions 2


session id: 1
local MAC address: xxxx.xxxx.xxxx,, remote MAC address: xxxx.xxxx.xxxx,
virtual access interface: Vi3, outgoing interface: Gi0/0/0
 VLAN Priority: 0
    77578 packets sent, 84671 received
    16997900 bytes sent, 84662990 received

session id: 1
local MAC address: xxxx.xxxx.xxxx, remote MAC address: xxxx.xxxx.xxxx,
virtual access interface: Vi2, outgoing interface: Gi0/0/1
 VLAN Priority: 0
    19316 packets sent, 42938 received
    3695339 bytes sent, 10995122 received

interface GigabitEthernet0/0/0
 no ip address
 negotiation auto
 pppoe enable group global
 pppoe-client dial-pool-number 1
!         
interface GigabitEthernet0/0/1
 no ip address
 negotiation auto
 pppoe enable group global
 pppoe-client dial-pool-number 2

interface Dialer1
 mtu 1492 
 ip address negotiated
 ip nat outside
 encapsulation ppp
 ip tcp adjust-mss 1452
 dialer pool 1
 dialer down-with-vInterface
 ipv6 dhcp client request vendor
 ipv6 dhcp client pd isp
 ipv6 address autoconfig default
 ipv6 enable
 ipv6 mtu 1280
 ipv6 tcp adjust-mss 1212
 ppp chap hostname xxxxxx
 ppp chap password 0 xxxxxx
 ppp pap sent-username xxxxxx password 0 xxxxxx
!         
interface Dialer2
 mtu 1492 
 ip address negotiated
 ip nat outside
 encapsulation ppp
 ip tcp adjust-mss 1452
 dialer pool 2
 dialer down-with-vInterface
 ppp chap hostname xxxxxx
 ppp chap password 0 xxxxxx
 ppp pap sent-username xxxxxx password 0 xxxxxx

Flavio Miranda · ‎02-17-2025

Hi @weibin

Can I see "show version" command and "show license " command?

weibin · ‎02-17-2025

Router-C1111#show version
Cisco IOS XE Software, Version 17.15.01a
Cisco IOS Software [IOSXE], ISR Software (ARMV8EL_LINUX_IOSD-UNIVERSALK9-M), Version 17.15.1a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2024 by Cisco Systems, Inc.
Compiled Wed 21-Aug-24 17:04 by mcpre


Cisco IOS-XE software, Copyright (c) 2005-2024 by cisco Systems, Inc.
All rights reserved.  Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0.  The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.  For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.


ROM: 17.5(1r)

Router-C1111 uptime is 42 minutes
Uptime for this control processor is 44 minutes
System returned to ROM by Reload Command at 00:15:33 beijing Tue Feb 18 2025
System restarted at 00:19:43 beijing Tue Feb 18 2025
System image file is "bootflash:c1100-universalk9.17.15.01a.SPA.bin"
Last reload reason: Reload Command
          
          
          
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
          
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
          
If you require further assistance please contact us by sending email to
export@cisco.com.
          
          
          
Suite License Information for Module:'esg' 
          
--------------------------------------------------------------------------------
Suite                 Suite Current         Type           Suite Next reboot     
--------------------------------------------------------------------------------
FoundationSuiteK9     None                  Smart License  None                  
securityk9
appxk9    
          
          
Technology Package License Information: 
          
-----------------------------------------------------------------
Technology    Technology-package           Technology-package
              Current       Type           Next reboot  
------------------------------------------------------------------
appxk9           appxk9           Smart License    appxk9
uck9             None             Smart License    None
securityk9       securityk9       Smart License    securityk9
ipbase           ipbasek9         Smart License    ipbasek9
          
The current throughput level is unthrottled 
          
          
Smart Licensing Status: Smart Licensing Using Policy
          
cisco C1111-4P (1RU) processor with 1337633K/6147K bytes of memory.
Processor board ID FGL2504LHCT
Router operating mode: Autonomous
3 Virtual Ethernet interfaces
6 Gigabit Ethernet interfaces
32768K bytes of non-volatile configuration memory.
4194304K bytes of physical memory.
2863103K bytes of flash memory at bootflash:.
          
Configuration register is 0x102

weibin · ‎02-17-2025

Router-C1111#show license all
Smart Licensing Status
======================

Smart Licensing is ENABLED

License Conversion:
  Automatic Conversion Enabled: True
  Status: Not started
  Last Data Push: <none>
  Last File Export: <none>

Export Authorization Key:
  Features Authorized:
    <none>

Utility:
  Status: DISABLED

Smart Licensing Using Policy:
  Status: ENABLED
  Reporting Mode: STANDARD

Account Information:
  Smart Account: <none>
  Virtual Account: <none>
          
Data Privacy:
  Sending Hostname: yes
    Callhome hostname privacy: DISABLED
    Smart Licensing hostname privacy: DISABLED
  Version privacy: DISABLED
          
Transport:
  Type: cslu
  Cslu address: <empty>
  Proxy:  
    Not Configured
  VRF: <empty>
          
Miscellaneous:
  Custom Id: <empty>
          
Policy:   
  Policy in use: Merged from multiple sources.
  Reporting ACK required: yes (CISCO default)
  Unenforced/Non-Export Perpetual Attributes:
    First report requirement (days): 365 (CISCO default)
    Reporting frequency (days): 0 (CISCO default)
    Report on change (days): 90 (CISCO default)
  Unenforced/Non-Export Subscription Attributes:
    First report requirement (days): 90 (CISCO default)
    Reporting frequency (days): 90 (CISCO default)
    Report on change (days): 90 (CISCO default)
  Enforced (Perpetual/Subscription) License Attributes:
    First report requirement (days): 0 (CISCO default)
    Reporting frequency (days): 0 (CISCO default)
    Report on change (days): 0 (CISCO default)
  Export (Perpetual/Subscription) License Attributes:
    First report requirement (days): 0 (CISCO default)
    Reporting frequency (days): 0 (CISCO default)
    Report on change (days): 0 (CISCO default)
          
Usage Reporting:
  Last ACK received: <none>
  Next ACK deadline: Dec 18 00:41:05 2025 beijing
  Reporting push interval: 30  days
  Next ACK push check: <none>
  Next report push: Feb 18 00:22:24 2025 beijing
  Last report push: <none>
  Last report file write: <none>
          
Trust Code Installed: <none>
          
License Usage
=============
          
hseck9-ALT (ISR_1100_4P_Hsec):
  Description: hseck9
  Count: 1
  Version: 1.0
  Status: IN USE
  Export status: RESTRICTED - ALLOWED
  Feature Name: hseck9-ALT
  Feature Description: hseck9
  Enforcement type: EXPORT RESTRICTED
  License type: Export
          
appxk9 (ISR_1100_4P_Application):
  Description: appxk9
  Count: 1
  Version: 1.0
  Status: IN USE
  Export status: NOT RESTRICTED
  Feature Name: appxk9
  Feature Description: appxk9
  Enforcement type: NOT ENFORCED
  License type: Perpetual
          
securityk9 (ISR_1100_4P_Security):
  Description: securityk9
  Count: 1
  Version: 1.0
  Status: IN USE
  Export status: NOT RESTRICTED
  Feature Name: securityk9
  Feature Description: securityk9
  Enforcement type: NOT ENFORCED
  License type: Perpetual
          
Product Information
===================
UDI: PID:C1111-4P,SN:FGL2504LHCT
          
Agent Version
=============
Smart Agent for Licensing: 5.11.7/ce7436a25
          
License Authorizations
======================
Last Data Push: <none>
Last File Export: <none>
          
Overall status:
  Active: PID:C1111-4P,SN:FGL2504LHCT
    Status: RESERVATION IN PROGRESS on Jan 25 09:56:57 2021 beijing
    Request code: CB-ZC1111-4P:FGL2504LHCT-B5YjdyPVc-9C
    Status:PAK
          
Legacy License Info:
  regid.2017-04.com.cisco.ISR_1100_4P_Application,1.0_594066da-7a77-4de1-94be-5f457fc79627: 
    DisplayName: appxk9
    Description: appxk9
    Total available count: 1
    Term information:
      Active: PID:C1111-4P,SN:FGL2504LHCT
        License type: PERPETUAL
          Term Count: 1
          
  regid.2017-04.com.cisco.ISR_1100_4P_Security,1.0_98807f85-97b4-4e3a-bb8f-dc6a9748d566: 
    DisplayName: securityk9
    Description: securityk9
    Total available count: 1
    Term information:
      Active: PID:C1111-4P,SN:FGL2504LHCT
        License type: PERPETUAL
          Term Count: 1
          
  regid.2017-08.com.cisco.ISR_1100_4P_Hsec,1.0_76e2043a-45ba-4350-8804-9a63fed1ace0: 
    DisplayName: hseck9-ALT
    Description: hseck9
    Total available count: 1
    Term information:
      Active: PID:C1111-4P,SN:FGL2504LHCT
        License type: PERPETUAL
          Term Count: 1
          
Purchased Licenses:
  No Purchase Information Available
          
Usage Report Summary:
=====================
Total: 0,  Purged: 0
Total Acknowledged Received: 0,  Waiting for Ack: 0
Available to Report: 3  Collecting Data: 3  
          
Device Telemetry Report Summary:
================================
Data Channel: AVAILABLE
Reports on disk: 0

Flavio Miranda · ‎02-17-2025

@weibin

Can you share the router config?

I believe you might be load balancing traffic between the two wans and that´s why it is sharing.

If you run a trace route from one PC to the internet a few times, how does it looks like?

weibin · ‎02-17-2025

I tried connecting WAN2 back to the OpenWRT for PPPoE dial-up, and after connecting it back to the Cisco router, the issue disappears. Each WAN has an upload speed of 50 Mbps. However, if I restart the Cisco router, they share the upstream bandwidth.

weibin · ‎02-17-2025

I fixed the issue by removing the "ip route 0.0.0.0 0.0.0.0" from the configuration, and that resolved the problem. Thank you for your help.

MHM Cisco World · ‎02-17-2025

What is version related to issue? I dont know.

Anyway' when both WAN UP and ypu dont use some load balance sure ypu will get not equal BW between two WAN.

....sorry for some delay in reply I am busy....
MHM

weibin · ‎02-17-2025

Cisco IOS XE Software, Version 17.15.01a