H3C, 3Com AD

H3C, 3Com AD

HP’s H3C or 3Com series calls this attribute priority and their table is very different, compared to the Cisco. Static route has default value of 60. Of course that you can change all the priorities for all routing protocols and every static route can have their own priority.

Routing Protocol / Approach	Priority
Direct	0
OSPF	10
IS-IS	15
STATIC	60
RIP	100
OSPF ASE (AS external)	150
OSPF NSSA (not-so-stubby-area)	150
IBGP	255
EBGP	255
Unknown	256

Putting It All Together

I have just described only few vendors and their version of AD. Now, I will try to put it all into one table.

Protocol	Cisco	Mikrotik	Juniper	H3C, 3Com
Directly connected	0	0	0	0
Static	1*	1	5	60
OSPF internal	110	110	10	10
OSPF AS external	110	110	150	150
OSPF NSSA	110	110	150	150
IS-IS Level 1 internal	115	-	15	15
IS-IS Level 2 internal	115	-	18	15
IS-IS Level 1 external	115	-	160	15
IS-IS Level 2 external	115	-	165	15
RIPv1, RIPv2, RIPng	120	120	100	100
eBGP	20	20	170	255
iBGP	200	200	170	255
Unknown	255	-	-	256

*Since IOS 12.2, the administrative distance of a static route with an exit interface is 1. Prior to the release of 12.2 it was in fact 0. Static route out an interface is recognized somewhere between 0 and 1. Static route out an interface is more trustworthy than Static route to next-hop address.
From this table we can see that Cisco and Mikrotik have similar tables and Juniper and H3C have similar tables.
If you have anything interesting to this topic, please share your knowledge with us in comments.