Configuring IP

The HP 6208M-SX Switch

You can configure an IP address on the HP 6208M-SX for management access to the switch. An IP address is required for Telnet access, Web management access, and SNMP access.

You also can specify the default gateway for forwarding traffic to other sub-nets.

IP Packet Flow Through a Routing Switch

Figure 6.1 shows how an IP packet moves through an HP routing switch.

Load

Balancing

Algorithm

Y

Mult.

N Equal­

cost

Paths

Lowest

PBRMetric

or

YIP acc N policy

 

 

Session

 

 

Fwding

 

 

 

 

 

 

 

RIP

 

 

 

 

 

 

 

 

Lowest

 

 

 

 

 

 

 

 

 

Incoming

 

 

 

 

 

IP Route

 

 

 

Table

N

 

Cache

N

 

 

 

 

 

 

 

Admin.

 

OSPF

 

 

 

 

 

Port

 

 

 

 

 

 

 

Table

 

Distance

 

 

 

Y

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BGP4

Outgoing

Port

ARP

 

Static ARP

Cache

 

Table

Figure 6.1 IP Packet flow through an HP routing switch

Figure 6.1 shows the following packet flow:

1.When the routing switch receives an IP packet, the routing switch checks for filters on the receiving interface.1 If a deny filter on the interface denies the packet, the routing switch discards the packet and performs no further processing, except generating a Syslog entry and SNMP message, if logging is enabled for the filter.

2.If the packet is not denied at the incoming interface, the routing switch looks in the session table for an entry that has the same source IP address and TCP or UDP port as the packet. If the session table contains a matching entry, the routing switch immediately forwards the packet, by addressing it to the destination IP

1.The filter can be an Access Control List (ACL) or an IP access policy.

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