Cisco Systems 8540 CSR, 8510 CSR Default Configuration, Initially Configuring the POS Interface

Chapter 4 Configuring Interfaces

Configuring the POS OC-12c Uplink Interface (Catalyst 8540)

Default Configuration

Table 4-1shows the default configuration of an enabled POS OC-12c uplink interface. To change any of these values, see the instructions in the following sections, “Initially Configuring the POS Interface” and “Customizing the Configuration.”

Table 4-1 POS OC-12c Uplink Interface Default Configuration Values

Parameter	Configuration Command	Default Value
Keepalive	[no] keepalive seconds	Keepalives enabled, 10 seconds
Encapsulation	encapsulation {hdlc ppp}	HDLC
Cisco Discovery Protocol (CDP)	[no] cdp enable	CDP enabled
Maximum transmission unit	[no] mtu bytes	4470 bytes
(MTU)
Framing	pos framing {sdh sonet}	SONET OC-12c
Bandwidth	[no] bandwidth kbps	622000 kbps (not configurable)
SONET overhead	pos flag {c2 value j0 value	c2 (path signal byte) set to 0xcf;
	s1s0 value}	j0 (section trace byte) set to
		0xcc;
		s1s0 (bit s1 and s0 of H1) set to 0
Loop internal	[no] loopback {internal line}	No loopback
POS SPE scrambling	[no] pos scramble-atm	POS SPE scrambling enabled
Cyclic redundancy check	crc {16 32}	32
Clock source	clock source {internal line}	Line

Initially Configuring the POS Interface

You should configure the following properties for a newly installed POS OC-12c uplink interface:

•IP routing

•IP address

•Encapsulation type

•Clock source

You should also configure the following properties to match those of the interface at the other end:

•Keepalive messages

•Cisco Discovery Protocol (CDP)

•Cyclic redundancy check (CRC)

•Scrambling

•Encapsulation type

	Layer 3 Switching Software Feature and Configuration Guide
78-6235-04, Cisco IOS Release 12.0(10)W5(18)		4-15