09-13-2017 01:35 AM - edited 03-05-2019 09:07 AM
Hi everyone,
let me tell you a little about my network and the issue I'm having.
I have a Cisco 1921/K9 connected to the Gigabit FTTH from my ISP. From 1921/K9, I have a 2960CG with 2 trunk and 8 access ports. In the acces ports, I have an AP (Cisco 861W), a DVR, 2 NICs from my x3250 M2 server, my desktop and my gf's laptop.
With a FortiWiFi 60E, or with a FirtiGate 60E as the main router, the throughput to LAN reaches 1Gbps. With the 1921/K9, though, the throughput goes only up to 180Mbps and it's kind of disturbing, because I do not intend to use only 20% of my bandwidth, especially with the devices listed above as part of my LAN.
Bellow is the conf from 1921/K9. Could someone, please, tell me if there's any way I can increase the throughput of the router on NAT, or I'm just supposed to change the equipment?
I searched through the discussions before, searched google... nothing found about the throughput rate I'm having, nor about any resembling config.
Current configuration : 4118 bytes ! version 15.2 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname homey-rt ! boot-start-marker boot-end-marker ! ! ! no aaa new-model ! ip cef ! ! ! ip dhcp excluded-address 10.10.1.1 10.10.1.2 ip dhcp excluded-address 10.10.1.33 10.10.1.34 ip dhcp excluded-address 10.10.1.65 10.10.1.66 ip dhcp excluded-address 10.10.1.98 10.10.1.99 ! ip dhcp pool vlan10-pool network 10.10.1.0 255.255.255.224 domain-name domain.com dns-server 8.8.8.8 8.8.4.4 default-router 10.10.1.1 lease 7 ! ip dhcp pool vlan20-pool network 10.10.1.32 255.255.255.224 domain-name domain.com dns-server 8.8.8.8 8.8.4.4 default-router 10.10.1.33 lease 7 ! ip dhcp pool vlan30-pool network 10.10.1.64 255.255.255.224 domain-name domain.com dns-server 8.8.8.8 8.8.4.4 default-router 10.10.1.65 lease 7 ! ip dhcp pool vlan888-pool network 10.10.1.96 255.255.255.224 domain-name domain.com dns-server 8.8.8.8 8.8.4.4 default-router 10.10.1.98 lease 7 ! ! ! no ip mfib no ipv6 cef ! multilink bundle-name authenticated ! ! ! license udi pid CISCO1921/K9 sn FCZ1725713T ! ! vtp mode transparent ! redundancy ! ! ! ! ! ! ! ! ! ! ! ! ! ! interface Embedded-Service-Engine0/0 no ip address shutdown ! interface GigabitEthernet0/0 description RDS-WAN no ip address no ip redirects no ip unreachables no ip proxy-arp ip tcp adjust-mss 1452 duplex auto speed auto pppoe enable group global pppoe-client dial-pool-number 1 no cdp enable no mop enabled ! interface GigabitEthernet0/1 bandwidth qos-reference 10000000 no ip address duplex auto speed 1000 ! interface GigabitEthernet0/1.1 description comps bandwidth qos-reference 10000000 encapsulation dot1Q 10 ip address 10.10.1.1 255.255.255.224 ip nat inside ip virtual-reassembly in ! interface GigabitEthernet0/1.2 description servers bandwidth qos-reference 10000000 encapsulation dot1Q 20 ip address 10.10.1.33 255.255.255.224 ip nat inside ip virtual-reassembly in ! interface GigabitEthernet0/1.3 description dvr bandwidth qos-reference 10000000 encapsulation dot1Q 244 ip address 10.10.1.65 255.255.255.224 ip nat inside ip virtual-reassembly in ! interface GigabitEthernet0/1.4 description management bandwidth qos-reference 10000000 encapsulation dot1Q 888 ip address 10.10.1.98 255.255.255.224 ip nat inside ip virtual-reassembly in ! interface Dialer1 ip address negotiated ip nat outside ip virtual-reassembly in encapsulation ppp ip tcp adjust-mss 1452 dialer pool 1 dialer idle-timeout 0 dialer load-threshold 1 either dialer persistent dialer-group 1 ppp pap sent-username <hidden_username> password 0 <hidden_pass> ppp ipcp dns request accept ppp ipcp route default ppp ipcp address accept no cdp enable ! ip forward-protocol nd ! no ip http server no ip http secure-server ! ip nat inside source list 1 interface Dialer1 overload ip nat inside source list 100 interface Dialer1 overload ip nat inside source static tcp 10.10.1.2 3389 interface Dialer1 3389 ip nat inside source static tcp 10.10.1.66 81 interface Dialer1 81 ip nat inside source static tcp 10.10.1.66 8101 interface Dialer1 8101 ip nat inside source static tcp 10.10.1.100 23 interface Dialer1 23 ip nat inside source static tcp 10.10.1.101 23 interface Dialer1 24 ip nat inside source static tcp 10.10.1.35 22 interface Dialer1 22 ip nat inside source static tcp 10.10.1.36 21 interface Dialer1 21 ip nat inside source static tcp 10.10.1.36 80 interface Dialer1 80 ip nat inside source static tcp 10.10.1.36 443 interface Dialer1 443 ip nat inside source static tcp 10.10.1.36 20 interface Dialer1 20 ip route 0.0.0.0 0.0.0.0 Dialer1 ! access-list 100 permit ip 10.10.1.0 0.0.0.255 any access-list 100 permit ip any any ! ! ! control-plane ! ! ! line con 0 password <hidden_pass> login line aux 0 password <hidden_pass> login line 2 no activation-character no exec transport preferred none transport input all transport output pad telnet rlogin lapb-ta mop udptn v120 ssh stopbits 1 line vty 0 4 password <hidden_pass> login transport input all ! scheduler allocate 20000 1000 ! end
Thank you for your patience,
Dan
Solved! Go to Solution.
07-25-2022 07:49 AM
The 1921's 15 Mbps recommendation, is a very conservative Cisco recommendation. It tries to insure you'll not run short of CPU processing capability.
Yes, a 1921's performance capacity is very depending on your traffic mix and your config. If fact, Cisco documents the 1921 of being able to route up to 2.77 Gbps (in an ideal situation).
What you can do is check CPU loading history. If you see it bumping up against 100%, especially often and/or a high usage average, you may very well be bumping into the performance limits of that router, and if your are, it will impact your network usage.
BTW, using a gig interface, alone, doesn't make much of a difference beyond making it "easier" to exceed the capacity of the router.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide