jason w
asked on
cisco 1921 step to change wan connection,
Hi,
I have a client who's got a cisco 1921 and they are upgrading the internet to a Fibre connection with static IP.
Is there an easy way to configure it? GUI setup for this model?
May I have the steps to change this?
By the way, they are going connect to the Fibre 400 which could give them up to 400mbps, can this router handle this? the spec seems to be ok but a friend of mine said these's model is good up to 100mbps only, is that the case?
our Cisco guy is on holiday for two weeks and I personally have no experience with this cisco so struggling...
Any help is much appreciated.
Thanks
Jason
I have a client who's got a cisco 1921 and they are upgrading the internet to a Fibre connection with static IP.
Is there an easy way to configure it? GUI setup for this model?
May I have the steps to change this?
By the way, they are going connect to the Fibre 400 which could give them up to 400mbps, can this router handle this? the spec seems to be ok but a friend of mine said these's model is good up to 100mbps only, is that the case?
our Cisco guy is on holiday for two weeks and I personally have no experience with this cisco so struggling...
Any help is much appreciated.
Thanks
Jason
I don't think that 1921 series routers can handle 400Mb of WAN traffic.
According to Cisco Integrated Services Routers — Performance Overview it is better than my home 892 router (Max throughput on WAN with only NAT configured is around 60-70Mb). I would expect, for sure, no more than 300Mb WAN throughput on 1921(to be honest, even less - around 150 - 200, even if only NAT is configured). Adding other options (IPsec, ZBF etc) will additionally slow down throughput.
According to Cisco Integrated Services Routers — Performance Overview it is better than my home 892 router (Max throughput on WAN with only NAT configured is around 60-70Mb). I would expect, for sure, no more than 300Mb WAN throughput on 1921(to be honest, even less - around 150 - 200, even if only NAT is configured). Adding other options (IPsec, ZBF etc) will additionally slow down throughput.
High performance with integrated services:)
● The Cisco 1900 Series enables deployment in high-speed WAN environments with concurrent services enabled up to 15 Mbps.
You know, I didn't even consider integrated services.
Jason, what services will be used on the router?
We support a city that has eleven different buildings we've connected with a private wireless network that runs at 400Mbps. Four of those buildings have 1921's, but they're just doing routing - no NAT, IPSec, or anything else.
We have another customer with two 1921's... they both are configured with BGP on the uplink and HSRP on the internal side and both are connected to 1Gbps uplinks. Those are running ~200Mbps sustained traffic and burst to higher than that.
If you're just doing straight Ethernet routing, I think you'll be fine on the 400Mbps connection; we've never experienced bottlenecks there.
As Predrag point out, though - if you're running integrated services, it's a whole different story.
In our implementations, NAT, IPSec, etc. are all handled by Cisco ASA firewalls and the 1921's are only used if we need a router between the firewall and the uplink.
Jason, what services will be used on the router?
We support a city that has eleven different buildings we've connected with a private wireless network that runs at 400Mbps. Four of those buildings have 1921's, but they're just doing routing - no NAT, IPSec, or anything else.
We have another customer with two 1921's... they both are configured with BGP on the uplink and HSRP on the internal side and both are connected to 1Gbps uplinks. Those are running ~200Mbps sustained traffic and burst to higher than that.
If you're just doing straight Ethernet routing, I think you'll be fine on the 400Mbps connection; we've never experienced bottlenecks there.
As Predrag point out, though - if you're running integrated services, it's a whole different story.
In our implementations, NAT, IPSec, etc. are all handled by Cisco ASA firewalls and the 1921's are only used if we need a router between the firewall and the uplink.
You won't get anywhere close to 400Mb. Cisco only recommends the 1921 for bandwidths up to 30Mb.
Actually according to someone's testing -1921 vs 891 Throughput Testing- most likely, it can (without NAT etc).
Well, like I said - we're using them in production environments with great results. Again, no NAT or other services; just straight routing.
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The configuration itself is pretty simple.
Can you cut & paste a sanitized config? Remove any private or identifying information.
Also, how is the Fiber being delivered? I'm assuming Ethernet.
Thanks!