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Small- and Mid-Sized Campus Networks
On small- and mid-sized networks, S2700&S3700 switches are deployed at the
access layer, S5700&S6700 switches are deployed at the core layer, and an AR
series router works as the egress router.
The core switches run VRRP to ensure reliability and load balance traffic to
effectively use resources.
On an access switch, each department has a VLAN allocated so that services are
separated by VLANs. Configuring VLANIF interfaces on the core switches
implements Layer 3 communication between different departments.
The core switches function as DHCP servers to allocate IP addresses to user
devices on the campus network.
Configuring DHCP snooping on the access switches prevents intranet users from
connecting a small router to the intranet to allocate IP addresses. Configuring IPSG
on the access switches prevents intranet users from changing IP addresses.
This section uses the S2750 as an access switch (ACC1), S5700
as a core switch (CORE), and an AR series router as an egress
router (Router) as examples to demonstrate the configuration
procedure for small- and mid-sized campus networks.
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