Which Cisco router to choose with iron-level redundancy?

Question

Cisco

Good time of the day!
At the moment, Cisco 1841 is used as a router (BGP router for 4 providers, its own AS + IP block, and DMZ zone + Access lists). Behind him, for maintenance, the network is Cisco ASA 5515 in the Failover cluster (Firewall, l2l VPN, vlan to the second office and other vpn).
Because Cisco ASA is already in the cluster for fault tolerance, there was a need to update the router and reserve it at the "iron" level (a cold reserve is not suitable, in view of the specifics of the office).
Of the requirements:
1) Redundancy at the iron level
2) Throughput of at least 100 megabits
3) BGP
4) use of Access-lists to filter incoming traffic
From the preferences of the authorities - only Cisco equipment
Please help me choose a router, otherwise I'm already confused in Cisco redundancy technologies and, in principle, in ciss :)

Answer 1

From what you wrote:
1) make a pair of routers into redundancy protocols
2) look at the router perfomance
table 3) Almost every router can do BGP, unless full view is needed of course
4) Every iron router can also ACL
From myself, if there are problems with the bubble no, you don’t need full view, take something from 3900. And if you don’t feel sorry for the money at all, you can watch more expensive.

Answer 2

Then any Cisco router that can HSRP. Their spread is quite large, look for the budget.

Answer 3

Redundancy at the iron level inside one router is a myth. Put two separate ones and turn on balancing.

Answer 4

That's why I wrote, redundancy at the iron level, i.e. - 2 devices.
Something like Cisco asa active/passive failover

Answer 5

Now a new line of Cisco routers has been released, if you had enough of 1841 before, now you can take something from the ISR4300 series. Initial ISR4321/K9 .
If you need a "voice", encryption and other bells and whistles, then ISR4321-VSEC / K9 .