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Large broadcast domain for docsis customers

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Anonymous (not verified)
Large broadcast domain for docsis customers

Hi everybody.
I`m thinking about the advantages and disadvantages of working several CMTS in routing and bridge mode.
Currently I have 5 Arris C3 CMTS working in bridge mode, all in one VLAN.
Of course CPE traffic separated from CM traffic. Total amount of CPE (and CM accordingle) is nearly 2100. And this all in one VLAN. Such a large broadcast domain confuse me concerning to design and security issues.
Does any body have experience in administering such an environment with large amount of hosts in one VLAN?

Anonymous (not verified)
Large broadcast domain for docsis customers

I'm not familiar with arrisi cmts, but there should be any possibilities to set every cmts in seperate broadcast domain. Just be aware when configuring the cable interface in broadcast domain, all the traffic going through that interface will be tagged with configured broadcast domain vlan-id, so, you should configure the switch behind the cmts to forward that vlan-id.