Dell S4048T User Manual

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Changing MED Attributes
By default, Dell Networking OS uses the MULTI_EXIT_DISC or MED attribute when comparing EBGP paths
from the same AS.
To change how the MED attribute is used, enter any or all of the following commands.
• Enable MED comparison in the paths from neighbors with different ASs.
CONFIG-ROUTER-BGP mode
bgp always-compare-med
By default, this comparison is not performed.
• Change the bestpath MED selection.
CONFIG-ROUTER-BGP mode
bgp bestpath med {confed | missing-as-best}
• confed: Chooses the bestpath MED comparison of paths learned from BGP confederations.
• missing-as-best: Treat a path missing an MED as the most preferred one.
To view the nondefault values, use the show config command in CONFIGURATION ROUTER BGP mode.
Changing the LOCAL_PREFERENCE Attribute
In Dell Networking OS, you can change the value of the LOCAL_PREFERENCE attribute.
To change the default values of this attribute for all routes received by the router, use the following
command.
• Change the LOCAL_PREF value.
CONFIG-ROUTER-BGP mode
bgp default local-preference value
• value: the range is from 0 to 4294967295.
The default is 100.
To view the BGP configuration, use the show config command in CONFIGURATION ROUTER BGP mode or
the
show running-config bgp command in EXEC Privilege mode.
A more flexible method for manipulating the LOCAL_PREF attribute value is to use a route map.
1 Enter the ROUTE-MAP mode and assign a name to a route map.
CONFIGURATION mode
Border Gateway Protocol IPv4 (BGPv4) 250

Dell S4048T Specifications

General

Switching Capacity	1.44 Tbps
Rack Units	1U
Form Factor	Rack-mountable
Power Device	Internal power supply
Power Redundancy	Optional
Product Type	Switch
Jumbo Frame Support	Yes
Routing Protocol	OSPF, BGP, RIP, VRRP, PIM-SM, IGMP
Remote Management Protocol	SNMP, RMON, Telnet, SSH
Features	Quality of Service (QoS), Jumbo Frames Support, Virtual Route Redundancy Protocol (VRRP), VLAN support, sFlow, Multiple Spanning Tree Protocol (MSTP), Rapid Spanning Tree Protocol (RSTP), IPv6 support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3ae
Dimensions (W x D x H)	17.3 in x 16 in x 1.7 in
Operating Temperature	0°C to 40 °C
Operating Humidity	10% to 90% (non-condensing)