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Community Member

Can 2821 Gigabit Ethernet ports support Layer 3 routing?

Hi, can the 2 build in gigabit ethernet ports support layer 3 routing? I have a Metro-E connection that needs to terminate in this router. Can this be done or do I have to get the HWIC-1FE card to support this?

2 ACCEPTED SOLUTIONS

Accepted Solutions
Hall of Fame Super Gold

Re: Can 2821 Gigabit Ethernet ports support Layer 3 routing?

How will the connection from your Metro-E be presented to the 2821?

The 2821 has 2 routed Gig ports.

Super Bronze

Re: Can 2821 Gigabit Ethernet ports support Layer 3 routing?

As also noted by Leo, yes you can route on the two built in Ethernet ports. If you need more than two gig ports, another can be added using the HWIC-1GE-SFP. You also have the option of adding two HWIC-1FEs, one HWIC-2FE, or one of the Ethernet switch modules. (The latter routes via VLANs).

Something to keep in mind, a 2821 doesn't really have sufficient processing performance to guarantee routing at 100 Mbps let alone gig, although 10 Mbps should be fine.

3 REPLIES
Hall of Fame Super Gold

Re: Can 2821 Gigabit Ethernet ports support Layer 3 routing?

How will the connection from your Metro-E be presented to the 2821?

The 2821 has 2 routed Gig ports.

Community Member

Re: Can 2821 Gigabit Ethernet ports support Layer 3 routing?

The ISP will terminate and hand off a RJ45 to me.

Super Bronze

Re: Can 2821 Gigabit Ethernet ports support Layer 3 routing?

As also noted by Leo, yes you can route on the two built in Ethernet ports. If you need more than two gig ports, another can be added using the HWIC-1GE-SFP. You also have the option of adding two HWIC-1FEs, one HWIC-2FE, or one of the Ethernet switch modules. (The latter routes via VLANs).

Something to keep in mind, a 2821 doesn't really have sufficient processing performance to guarantee routing at 100 Mbps let alone gig, although 10 Mbps should be fine.

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